The Best Rechargeable Batteries and Chargers Of 2015


In A Nutshell

Here are my recommendations for the best rechargeable AA batteries:

Overall, the best rechargeable AA battery is the Eneloop Pro. They have a high energy capacity (2500 mAh), and they perform better than similar high-capacity AAs. They can only be charged 500 times (versus 2100 times for regular Eneloops). But most people will never charge their batteries that many times. For example, if you charged your batteries twice a week consistently, it would take 5 years to reach 500 charges.

Also worthy of consideration is the Maha’s Imedion battery, which is cheaper than the Eneloop Pro (about $5 less for a pack of 4). Imedions are also low-discharge, high-capacity batteries (2400 mAh), but they do not perform quite as well as the Eneloop Pro (see this review for the details on their performance).

The Details

Today, the best rechargeable batteries are the “low self-discharge” Nickel-Metal Hydride (Ni-MH) cells.

These batteries have a lot going for them: they come fully charged (like alkaline batteries), and they can hold their charge over many months (unlike regular Ni-MH rechargeables). Because they can hold their charge for so long, they are suitable for low-drain devices like remote controls and flashlights. However, they are ideal for use in high-drain electronic devices like digital cameras, where they out-perform alkalines. See this graph for a comparison:


Generally, the best low self-discharge batteries are made in Japan (the others are made in China), these are: Panasonic’s Eneloops, Duracell, Energizer and Sony. The Eneloop Pro batteries from Panasonic definitely hold their charge the longest, and they are my top recommendation. I do not recommend the Energizer or Duracell rechargeable batteries — these name brands seem to produce inferior rechargeables, perhaps to protect their sales of alkaline batteries.

See also my review of  best rechargeable D Size Batteries, C Size and 9V batteries.

Eneloop Rechargeable Batteries by Panasonic

Better designed than other rechargeables, Eneloop batteries have become a best-selling battery. Eneloops can be recharged up to 2100 times, and they will retain their charged capacity even after years of storage. After 6 months, they retain 90% of their charge. After five years, they retain 70% of their charge (when stored at 20 degree Celsius). Panasonic recommends keeping the batteries in a cool location to maximize charge retention.

The AA-sized Eneloops are rated at 2000 mAh, and the AAA-sized Eneloops are rated at 800 mAh (mAh stands for “MiliAmp hours” — a unit that indicates how much energy a battery can hold.)

The charge times are as follows: AA Eneloops charge in 230 minutes, and AAA Eneloops charge in 135 minutes.

Eneloop batteries are available at Amazon in 8 packs, and 16 packs and 32 packs. They are also available with a charger: 8 Eneloop Batteries with a Charger. Note that these links to the second-generation 2000 mAh eneloops.

Eneloop Pros


Sanyo XX "Powered By Eneloop"

The Eneloop Pro is a high-capacity version of the regular Eneloop cell. The Eneloop Pro has a capacity of 2500 mAh –this is 500 mAh more than the regular Eneloops. Their only potential downside is that they can be charged 500 times — not 2100 times like the regular Eneloops. However, on average most people will charge their batteries about 100-200 times over a 5 year period.

Eneloop Pro batteries are available on Amazon.

The Best Battery Chargers

How about some good battery chargers to go with these batteries? The chargers featured below are some of the smartest out there — they have built-in protection to prevent overcharging or undercharging. They can also handle most battery sizes.

LaCrosse Technology BC-1000 Alpha Battery Charger

The LaCrosse Alpha BC-1000 Charger has sophisticated monitoring circuitry that controls the charging process, and it is also capable of “renewing” batteries by running fully-controlled discharge-recharge cycles.

The charger shows battery voltage and charge status on its digital display. It has four separate charge channels so you can charge one, two three or four batteries at a time – even on individual charge programs. This allows you to test one battery while charging the others. It comes with four AA and four AAA batteries, four battery adapters (which convert AA sized battery to C and D sizes) and a carry case. Note, however, if you want to charge C or D size batteries, you’ll want to get the Ansmann chargers below.

You can get the LaCrosse BC-1000 Alpha Charger at Amazon for about $60, and you can find the BC-700 Charger available for around $36 (this is essentially the same charger but does not include bonus items the four AA  & AAA cells, plus the four C + D-cell converters).

PowerEx MH-C9000 WizardOne Charger-Analyzer

This charger, the PowerEx MH-C9000 the most powerful NiMH AA battery analyzer/charger in the consumer market. However, due to certain design features such as a single-status LCD panel and a long programming sequences, make it difficult to use for multiple cells. For most charging and maintenance of NiMH cells, I recommend the LaCrosse Alpha BC-1000 Charger (reviewed above).

The PowerEx MH-C9000 is available at Amazon for about $50

Maha PowerEx “Ultimate Professional” Charger

Maha PowerEx Battery Charger

The Maha’s Ultimate Professional Charger almost lives up to its hyperbolic name. This compact charger can charge any combination of 1 to 8 batteries. You can mix and charge AA, AAA, C and D sized cells at the same time on individual charging circuits. Each battery size also has its own fixed contact charging points (i.e. not a spring). An LCD display shows charging and conditioning status of each rechargeable battery.

Maha’s chargers can restore batteries to their optimal performance level by repeatedly charging and discharging them. It also has intelligent charging technology and overcharge protection. It also comes with an international AC adapter, and short-circuit protection.

It’s available from Amazon for around $83.


  1. says

    Nice review. Informative.

    I feel it is important to choose a smart charger with individual charging channels because paired channel chargers do an inadequate job; they do not charge each cell optimally.

  2. says

    I want to purchase your “Eneloop Recharageble Battry Cells” because i am hear by differant resource that these are the best cells of 2007.

    Please tell me how i can purchase them from Pakistan because these are not avilable in Pakistan.

    Please tell its solution at my e-mail address

    I am very thankful if u help me.

  3. tim says

    is the sanyo charger that has eneloop cells included a good charger ..also does it have a overcharge protection feature? thanks tim

  4. Raul says

    Please respond…I have the IC3 Rayovac 15 minute rechargeable NimH 2000 mAh batteries..and they work great…but don’t feel like having to go online to get more. Using the PS6 recharger…am I able to buy the Energizer 15 minute rechargeable batteries and use the same charger that I use for the IC3’s…thanks

  5. Ralph Kramden says

    You should look at the “Pure Energy” line of rechargeable alkaline batteries. They’re MUCH better than NiMH – they retain their charge and are cheaper.

  6. Alex says

    The problem with rechargeable alkaline is that it lowers full capacity with a deep discharge and it needs its own charger. Imho hybrid nihm are much better.

  7. Linda says

    What Dsize recharge batteries do knowledgeable people recommend for torches? Thank you for your help.

    I am still using two ARLEC Ni-cad Dsize batteries which were charged by me for the first time in 1996. After more than one hour’s continuous use it still keeps going. It may not hold the charge very long though.

  8. says

    I’ve been having lots of problems with some of the cheaper NiMH rechargeables I’ve bought over the years. They seem go all go bad after just a few charges. I think it’ll be worthwhile to spend a bit more and get some top rated ones instead of the lousy ones I’ve been getting.

  9. Ian says

    I agree, I have not been happy with the performance of any rechargable batteries I have bought over the years including Rayovac and Energiser, they do seem to go bad very quickly and dont seem to hold a full charge so much that I dont even bother using my rechargable battereries any more.
    I buy the bulk packs of duracell batteries for $10 a pack they last so much longer in my digital camera than my rechargable ones. I dont mind paying $10 every couple of months for packs of batteries that last a long time in my camera.
    I do mind paying $20 even one time for rechargable ones and charger that dies on me after such a short time of use.

    • says

      It’s not just about the cost. There are other ramifications of our “throw away” society. Batteries are just one of many things slowly (or quickly), ruining our environment. Please consider more than just the dollar when making purchase decisions.

  10. Gestalt says

    Yes, the brand of rechargeable can make a difference, but for heaven’s sake, you should be charging them with a SOLAR POWER BATTERY RECHARGER!

    Using coal powered electricity to recharge your batteries is just wasteful. Let the sun do the work directly. Take the coal out of the loop.

  11. Jeff Howard says

    The Eneloop batteries are outstanding — by far the best rechargeable I’ve ever used. They hold a charge extremely well (as well as alkalines) on the shelf and when in a device but not being used. They hold plenty of power for cameras, radios, telephones, recorders. And they do not have the “memory” problems that plague ni-cads, the ridiculous discharge flaws of rechargeable alkalines, or the lousy shelf life of conventional ni-mh’s. Eneloop + a top quality charger such as the MAHA MH-C808M is the way to go. The Rayovac Hybrid ni-mh is also a cut above, but not as good as the Eneloop.

  12. says

    Wonderful and so very comprehensive review. I am strictly using rechargeable batteries for quite a while and at least personal feeling is much better – less pollution.

  13. Les Anderson says

    Purchased Eneloop charger with four batteries two months ago. Charger works great and ONE set of batteries operates my digital camera great but the other set lasts only about 15 minutes before I get the “change batteries” signal on my camera. Probably just one bad battery dragging the other one down but it’s beet a little frustrating. Batteries and charger purchased at Walmart.

  14. Bob says

    Does anyone know what the best option is for nimh size D batteries. I don’t want to use the adapters that convert size AA to D, they don’t have enough juice. Are there any hybrid size D or C’s out there?

  15. says

    There are several steps you can take to help you get maximum performance from your laptop battery: Prevent Memory Effect – Keep the laptop battery healthy by fully charging and then fully discharging it at least once every two to three weeks.

  16. Andrew says

    Costco carries Eneloop here in Washington State. I bought 2 packs and have been very pleased with their performance over the last 6 months.

  17. J Weiner says

    I have used a set of 4 Eneloop AA for my digital camera, which I use a lot.
    At first they lasted a month before needing charging, but now they last only one or two shoots…
    There are no charging directions that I can find.
    Bought from Tandy, Australia

  18. U. Krain says

    I bought my first set of Eneloop on christmas in 2006 and they are still going strong like they were new. I use them every day in my camera and I never had anything comparable, they are just perfect, ready every time I want to go, they were never ever discharged when not used. That’s what I was missing all the years before: This reliability! Priceless!

  19. Don Balsley says

    outdoor lights will it make a differance using 1.2v 600 mah vrs.2100 mah I have both and is there a mah? I should use? Thanks Don

  20. SCedG says

    The Eneloops aren’t that widely available in stores around DC from what I’ve seen, so I stick with Duracell Precharge Rechargeables because they’re cheap and hold a great charge too

  21. says

    This article is very timely; you’ve convinced me to upgrade to the new rechargeable technology. I’ve been using rechargeable NiMH for eight years now and they are starting to die on me. I have noticed that there is significant variation in quality according to brand. If you want to hang onto the older battery technology, I like the Sony NiMH batteries. I’ve used them for 8 eights years and they’ve really held up to frequent use… or is it abuse? The quick charge Rayovac’s are convenient but the batteries don’t last like the Sony’s. As for the no name brand… what is that suspicious bulge on the side of the battery that formed after less than 3 years of light use?

    Thanks, also, for the tip about Costco selling the eneloops. Great price. You get 8 AA’s, 2 AAA’s, a bunch of plastic sleeves that convert the AA’s to C’s & D’s and a charger for under $30 (as of Aug. 3, 2008).

    The charger is pretty darn basic. It’s the type that will sense when the charge is complete and turns off the charge process. The charger holds 4 batteries and it charges in pairs. You can mix AA’s and AAA’s but only in pairs. No “smart” features like deep discharge. But the the price at Costco is pretty much the cost of the batteries with the charger tossed in for free. I’m not complaining. The charger will work with 120-240 V and is very light and compact. For those of you who hesitate over the hefty price of rechargeables vs. alkalines, last time I traveled I got caught without a charger and paid $15 at a fancy tourist trap hotel shop for 4 alkaline AA’s for my camera. 4 eneloops for $12 at Amazon vs. $15 alkalines? Switch and don’t leave home without the charger!

    Oh, wait. This is the new technology. Just charge up before you leave. Duh.

  22. Missy says

    I use the Eneloop batteries in my vibrator, and oo-ee-oo I can have multiple orgasms and keep on going if I want (though I usually get too sore after about a dozen). Great batteries and last a long time in my vibrator!

  23. says

    My setup, which I am VERY happy with, is a large supply of Eneloop batteries plus one 4-cell smart charger (The Lacrosse BC-900 reviewed above). Works GREAT.

    The folks having problems with their eneloops probably need to put them on a “recharge” cycle with one of the smart chargers. I understand that you can often get these kinds of issues by using “fast” chargers rather than “slow” trickle charges.

    Where to buy:

    Costco is where I got my initial stash of Eneloops (got two travel packs and just never use the charger). However, for the next couple of weeks Thomas Distribution ( is having a hell of a sale on Eneloops, 4 AA’s for under $10, and they throw in a travel case for each set as well. The price goes down even more (moderately so) if you buy a bunch.

    We have a family with 6 kids, and went through a LOT of batteries before switching to rechargables. We also tried “old style” rechargables before hitting on the eneloops. We’d end up with “dead” batteries after only a few recharges; I understand now that was most likely because we’d let the batteries completely discharge before recharging them, which apparently can ruin standard NiMH batteries.

    In any case, we started off with the Lacrosse charger and the 8+2+charger+shells+travel pack deal from Costco (see about 1/2 way down), then quickly discovered we’d need at least twice as many eneloops. Six months later and still going strong, and I’m upsizing our battery supply with a bunch more eneloops from Thomas Dist (see above).

    As or C and D cells: – Eneloop “real” C and D cell batteries will be released in September. Bad news: initial release is in Japan, although I suspect we’ll see them in the US soon after.

  24. Luis Botelho says

    Hi. Your site is great and provided me with lots of very useful information. Thanks

    I would like to buy a rechargeable battery with 12V and 2Ah (or 6v and 3Ah). I’ve been reading your article about the new hybrid Nickel-Metal Hydride (Ni-MH) cells. It provides info about the battery amperes but not about their voltage. Would you please point me to where I can get such information?
    Thanks a lot

  25. says

    Dear Sir;
    Your webpage is great as well.
    We need extensive information on your entire range of batteries and chargers to satisfy the need of certain customers.
    For more impression, we need a few sets of hard- copy catalogs and your export price list before discount.
    Your prompt response way generate business for both of us.
    I look forward with interest to hearing from you in due course.
    Kind regards.

    Farouk E Abu Shara
    Executive Director

  26. herbolaryo says

    According to an independent comparison of low self discharge battery where the initial 1-hour, 1-week, 4-week, 3-month performance was measured.
    The most efficient AAA is GP Recyko 800 mAh .
    And here is the ranking:
    #2 MAHA IMEDION 800 mAh
    #3 Sanyo Eneloop 800 mAh
    #4 Duracell Precharged 800 mAh
    #5 Accupower Acculoop 800 mAh
    #6 Hybrio by Ultralast 800 mAh

    For AA low self discharge battery:
    #1MAHA IMEDION 2100 mAh
    #2Kodak Pre-Charged 2100 mAh
    #3GP Recyko 2100 mAh
    #4Duracell Precharged 2100 mAH
    #5Hybrio by Ultralast 2100 mAh
    #6Ansmann Max-e 2100 mAh
    #7Nexcell EnergyON 2000 mAh
    #8Eneloop by Sanyo 2000 mAh
    #9Hybrid by Ray-O-Vac 2100 mAh

    Of course, the comparative review done on this is just one and would be excellent if can be repeated by others to verify the accuracy of the findings.

    I hope Justin you can post comparative reviews &/or proofs for the metaefficient products. I am just curious on how to categorize a product as being the best metaefficient product in its class.
    Nevertheless, you have an excellent website… Keep up the good work.

  27. Erica says

    Do I have to buy the same brand of rechargeable batteries for the charger I already have or can I use another brand as long as it is the same type of battery?

  28. Micmaster says

    Really, you think a 2100 mAh are the highest rated? I have been buying Powerex AA NiMH since 2008, they are 2700 mAh.

  29. Raghav says

    i think HYBRIO is also a very good choice when it comes to ready to use batteries. i am using a pair 1900 mAh with charger which i got for Rs. 645 INR.
    after all Uniross is one of the trutsed brand in rechargeables.

  30. Wingnut79 says

    I use NiMH rechargeable AAA batteries in a Kyosho Mini Z (small scale RC car). High discharge rate with a performance motor, the best Nationally recognized brand I have found is Energizer 850 mAh. I get the longest run time with minimal voltage drop with these. Duracell, Rayovac AAA NiMH batteries don’t get close to measuring up against the bunny!

  31. ankit says

    i want sum information about the solar batteries which is discharge at working time .give me any technology which charge the batteries by the external soures.

  32. says

    I have used powerex rechargeable batteries and chargers for a number of years with satisfaction. I need to buy more AAA’s now. How do the eneloop’s compare? Thanks.

  33. Boundock phasykaysone says

    Pls advise me what kind of charger should I go for ? my requirement is to charge 9000mAh battery for UXO detector, so I need the strong one (heavy duty) suppose Energy16 is it ok for me? or there’s other one’s better? Quantity I need 20-30 sets.

  34. Ramdas Chaugule - Kolhapur,Maharashtra says

    I have just started to use the Eneloop AA rechargeables in my digital Kodak camera and have to say they are definately the best rechargeable batteries I have ever used. Eneloop Batteries one of the best in all over world.

    • Jan says

      I have an Olympus 600UZ and I just want the best brand and charger to work in this camera. Quick charge is not as important as staying power and shelf life after charging. Give me the best shot.

    • zebedee says

      Flash guns require high voltages to re-charge the flash.

      NiMH (eneloops) has a nominal voltage of 1.2V
      Alkalines are 1.5V
      Lithiums are rated at 1.5V but start out significantly higher and can damage some equipement because of this, but in flash use, will recharge the fastest.

      If you were serious about using your flash you are better off using a custom (professional) flash battery pack, which anything professional would be based upon lithium technology (such as quantum).

      • assumption says

        Don’t assume that people reviewing AA batteries are professional. Also don’t assume that NiMH cells are inferior to Lithium-ion. Lithium-ion only has an upper hand in energy density, as far as commercially available products are concerned. NiMH has a fairly high energy density nonetheless, and is indeed capable of outliving even the best treated Lithium-ion batteries, simply for the fact that Lithium-ion has a short shelf-life. Low Self-Discharge NiMH may require slightly more frequent charges than Lithium-ion, but it will work for several years, it will work in cold temperatures and it will cost less money in the long run for the typical consumer. It also happens to be compatible with the majority of applications that require standard AA cells. Lithium-ion must be used in equipment that can handle higher voltages than standard AA cells, or you must use spacers to reduce the voltage, but this reduces capacity by roughly two thirds, and winds up being less viable than simply using NiMH.

  35. says

    I swear by Sanyo eneloops. I think they’re especially good in low-power devices like bluetooth mice and keyboards. It’ll be interesting to see how their new XL line compares. I can’t say I care for the Sanyo charger, though. If you can get by with a two battery charger, I love the Apple battery charger. It gets the job done and looks great.

  36. olaitan olaleye says

    I need alkaline rechargeable battery that is used for torchlight combine with a radio which is a multipurpose use.

  37. Angry Llama says

    What makes the eneloop rechargeable batteries any better/different than rechargeable batteries that have been on the market for the last 10 years? The specs listed are that of any average 1.2V rechargeable battery. They look cooler? {sigh}

      • Ashok says

        Regular NiMH batteries are almost useless for general purpose use as far as I’m concerned since they discharge to nothing in a very short time even when not uses. The Eneloops discharge very slowly. That is a nigh-day difference in usefulness.

    • Balboos HaGadol says

      A less well-known advantage of the ‘precharged’ type of NiMH batteries is their lower internal resistance. What this means to you, the user, is that they can supply higher current. I found this to be important in surprising places – such as a digital camera with a large LCD screen: it wouldn’t work with most standard NiMH’s – batteries which otherwise worked fine in my own power-hungry ZD710 camera.

      Switching to the pre-charged type and all is well. As for my ZD710? I like finding the camera ready-to-go after a bit of storage, instead of having to change batteries.

    • Ashok says

      for most uses u can buy the eneloop plastic D sleeve and put an Eneloop AA battery in it. This brings it up to D size Will work fine in all but the most demanding devices..

      • says

        Thanks Ashok. Been doing a little bit more research and found the Tenergy D which is 10,000 mAh, as opposed to the 2,500 mAh of the AA batteries. I haven’t quite figured out if it holds it’s charge when not in use. Any idea???

        • tekwyzrd says

          I’ve been using tenergy aa and aaa for a couple years now. They’re a bargain compared to other brands and work well in infrequent use or low power items (remote controls, flashlights, weather station and remote sensors) and just as well in higher demand items (cordless phones). I wasn’t aware their D-cells were rated at 10,000 mAh. I’ll have to get a bunch and a suitable charger.

          • Vicki says

            Good to hear you’ve been happy with Tenergy. Amazon was selling a T-2299 Universal Smart Fast Charger with eight Tenergy D 10,000 mAh batteries fo $69.95. I haven’t bought it yet but it sounds like a good deal.

          • Battsy says

            If you have a need for the D batts to sit for a long time (months and months, such as in a flashlight) then you might want to go with low self discharge rechargeable batts
            See, click “Rechargeable Batteries” under “Shopping Categories”: for AccuEvolution ultra low self discharge rechargeable Nimh C & D batts.
            -If- the Tenergy D batts are low self discharge, that’s a really good price for the T-2299 charger/8 batt combo deal – D rechargeables are pricey and smart chargers for C/D/9v are rare. Even if the Tenergys are not LSD batts, still…

  38. Serge says

    Swear by Eneloops. I have used them for a year now and will never buy regular alkaline batteries again. Have them in all my remote control, high powered flashlights (with Cree Q5 LEDs), and especially useful in camera flashes. Recycle rate is much faster and they last significantly longer.

  39. khurram says

    hi sir i am khurram from pakistan basically i am professional photographer in pakistan since 19 years. I have a problem about cell aa size. Kindly suggest me what charger i use in future and cell. Which power time more than 600 pictures exposing

      • pallen1962 says

        Drive to India… Why is that so frigging funny?
        You must understand, Pakistan has no technology. They have camels, sand, IED’s, and a bunch of people who prey to the wrong God.
        That’s it. Nothing else. The only ones capable of producing any technology use it to make a bomb, strap it onto their back, and blow themselves up, so they never get around to producing that battery charger, car, or indoor pluming. I guess if I had to ride a camel all day with a crotch-full of sand, I’d be pissed too, but I’d find a better way of venting my frustrations.

        • Jed says

          ^ WTF?
          possibly the most ignorant off-topic comment i’ve read in any thread “EVER”.
          Who cares about your ignorant, pointless, comment…
          Add something related to the thread topic, or nothing at all you fool.

    • says

      Dear Khurram ,

      I suggest you to try UNIROSS Rechargeable Batteries as its World’s No.1 in Rechargeabl Batteries , Uniross is the European leader in Rechargeable Batteries since 1968 , and all their products comes with 1 Year Warranty , Complete Range of Uniross Products are available in all cities of Pakistan since May’2010.

  40. FredEx says

    For those looking for longer battery life you could make a battery pack of larger cells. Right now I use a pack I made using 4 10,000 mAh D size batteries. I went that route since in my junk drawers I had a D size series battery holder and a coiled cord with connector to fit my camera’s power input jack. I clip the pack on my belt, have a clip on my camera to hook the cord in for strain relief and then plug it in the jack.

    I use a 16 GB memory card and that 40,000 mAh pack and I’m ready to go without worrying about my batteries.

    I’m going to make a pack using 4 5000 mAh C size, since I have yet hardly taxed the D’s. That would reduce the pack down to 20,000 mAh. The C pack of course would be smaller and lighter. It will be cheaper too.

    • JB says

      Your packs will be 40,000 or 20,000 mah only if wired parallel to provide 1.2 volts to your camera, which I don’t think is the case. Wired in series, like most battery holders are, will provide 4.8 volts at 10,000 or 5,000 mah using D and C cells respectively.

  41. M Mc says

    I bought some Hybrio’s AAs that were pretty useless and wouldn’t hold a charge. The 800 mAh Elenope’s are not strong enough to keep up with my professional camera flash. I still get better performance out of old 2500 mAh Energizers that have been recharged hundreds of times than out of the new Enelopes. I recently bought some Rayovac Platinum 2100 mAh rechargeables that I’m not too happy with. I had some great Panasonic rechargables that don’t seem to be around any more.

    • photoguy says

      If you have 800mAh Eneloops, then you must have the AAA size [or really are using something called an Elenope]. I’ve never seen a professional flash unit take anything less than a double A (I have a Nikon SB800 and several Vivitar 283s).

      I don’t see how your flash unit would even work with batteries too short to fit.

  42. Dave says

    I have found the PowerEx to be much better than Tenergy or any other NiMH out there in all sizes. The Maha charger does a great job and the PowerEx not only provide a nice long steady use period they also hold a nice charge when not used after charging.

  43. KarthiK says

    I used uniross 2500 MA battery for the past 6 months..
    Now the battery is totally worn out.
    I think I must have not charged more than 50 – 60 times.. dont know.. y. :(

  44. Jason says

    Do the ansman or maha charge any kind of hybrid batteries, and is there d hybrids. putting a AA in a big case seems like a real dumb Idea. If they thought AA provided enough power they would have made the device use AA not D. Or are the hybrid AA somehow as strong as standard D batteries?

  45. says

    Nice compilation, thank you.

    I have Sony Ni-MH Batteries, they re pretty well. I have measured them after 4 years of operation and they have 92% of the original capacity. I guess they have a higher resistance, but it doesn’t matter for my use.

    Thank you!


  46. says

    Even for electric vehicles, the NiMH technology is not dead. The robustness and safety aspects are a special advantage of thise cells. Maybe there will be further progresses in the future which make them competative to Li-Ion cells. Especialls for Hybrid Cars!!!

  47. Jed says

    Thanks for the round-up,

    Perhaps next time you could determine which smart/universal chargers…
    Sit at the “very top” in terms of: functionality/reliability/performance etc.

    ATM the moment you’re comparing the same makes/models from year to year.
    Instead of starting with a wider selection & “whittling it down” from there.

    Excellent job as is, thanks again!

  48. Jed says

    Thanks for the review, fairly insightful…

    Not sure why my earlier comment was removed…
    It wasn’t like some of the other SPAM in this thread.

    Although it did allude to the somewhat commercial nature of these reviews.

  49. Jed says

    Please ignore my prior comment….
    I mistakenly thought my post before it had been removed.
    It is in fact still there, thanks again for the review.

  50. Helen says

    Does anyone know if Eneloops can be recharged in La Crosse chargers? Or do they need to be charged in the Sanyo charger they’re sold with?

    • tinker71 says

      Yes, you can charge then in a good quality charger, cheaper chargers tend to be deleterious to the long term life span. Avoid chargers that push a fixed current flow into the batteries for a fixed time.

      • james says

        Agreed! Make the investment into a good charger. I have used my Enloops once (they come charged) then put them into a charger that pushes a fixed current for a fixed time. I then got around 10% of the initial life span out of them. I would avoid this again and am getting one of the mentioned chargers! Don’t mess around with them they are amazing. I honestly thought they were going to go on forever in my camera and portable speakers!!

  51. says

    I’m trying to choose the best rechargeable AAA batteries for my small LED flashlights–ones that became widely available about a year ago for $10.00 or less–each requires three AAA batteries at a time. I like what I read about the new NIMH hybride sort being discussed here, but I need batteries that hold their power close to it’s peak and are as bright (or equal) to the average, name-brand 1.5 alkaline ones I’m used to. What throws me is your mention of 1.2 volts somewhere in all the comments above–I was a late “surprise” little girl in an engineering family, but my grasp of things electrical usually needs a bit of explanation re. the why’s and wherefore’s.

  52. says

    I need to RE-PHRASE my just posted “comment/Question”–
    Will these newer hybrid NIMH batteries, such as the “Eneloops” or the “Hybrio” give me an equivalent brightness to the disposeable Alkaline ones I hate paying for and throwing away/recycling?

    • web master says

      They run at slightly lower voltage, so flashlights are not quite as bright as those with alkalines.

      • Anonymous says

        Martha again–
        Thanks–That tells me neither my charger nor my eyes are faulty!! Which batteries hold their power best? Do they run down on a sorta straight diagonal line (as it were) or more like a gently sloping plateau, then whoomph! go!! on down & be ready for recharge quickly?
        Also, I understand these don’t have memory as to recharging–is that right or wrong? Are they on the retail market or more online? Maybe other readers like Jed, already know everything, but I NEED to you all ask to learn!
        THANKS to all who’ve responded even with humor, help or knowledge about how these batteries work. –Martha

        • Jed says

          Why wasn’t my prior response to this person’s post approved?
          They personally attacked me for absolutely no apparent reason.
          I at least deserved some “right of reply”…

          Users posting totally off-topic posts that “are” approved…
          And another w/poor reading comprehension that results in them thinking I’m a “know it all”.

          I’m done, nice site, shame about some of the folks in this thread.

          • says

            Every time you transfer enegy from one famort to another, you lose part of the energy. You are transferring energy three times, so you will be pedalling like mad while you are barely moving.

  53. Frank Davidson says

    If you want to add non-cylindrical batteries to the list, the best 9V E batteries I have found are iPowerUs 52o mAh Lithium Polymer.

    What is the current highest capacity Hybrid AAA?

  54. Mallinath.D.Kololgi says

    I have not tried eneloop batteries. But as some one said routinely available cells get discharged fast. I found Pre charged cells are more economical and useful for an amateur photographer ratherthan rechargeable NiMh cells.

  55. Martha Rosson says

    Hi! It’s Martha. Again…AND–It’s high time I admit my need for HELP!!!!
    OK, now #1
    DO ‘they’ make 9V rechargeable batteries??–Of course I’m pretty sure they MUST, but I’ve just never ever seen them anywhere. Reading on, possibly they do..(?)…
    —-Frank Davidson appears to have read my mind as to the “non-cylindrical batteries–such as the 9V E batteries” that he found are “iPowerUs 52o mAh Lithium Polymer” I need to ask though, are these recargeable? & Where are they to be found?
    AND, #2!!
    Who make’s a no-too-expensive charger that would handle 4-6 D cells at once? And what’s the best “lasting AND bright” battery for those good, Big And Long REALLY “MANLY” type Mag Lights–Seriously, guys, I’m left with at least 3 of them!

  56. Frank Davidson says

    1 Of course the iPower US Li-Poly batteies are re-chargeaable. This is a thread about rechargeable batteries, so why would I post about a non-rechargeable battery?
    You’d need to check with the manufacturer about stockists. You could always try their website, you know … with a browser and search engine.

  57. Anonymous says

    Second vote for Sanyo XX AA batteries. These are the batteries you are looking for. Just can’t go wrong with them.

  58. Fred says

    I was way happy with the Ansmann “Energy 8 plus″ charger (recommended here), until a spring broke on one of the negative terminals. They claim to have a 3 year warranty, but they are making so difficult to return, it’s just not worth it. So, I will likely try to fix it myself, or toss in the trash. Bottom line … great design, poor craftsmanship.

  59. Chris says

    I use the Eneloop AA and AAA batteries in my kids toys all the time. One thing to keep in mind with them, the performance actually improves after the first few charges.
    Also, Eneloop has updated their batteries. The new ones can be charged 1500 times. The old ones are HR-3UTG or HR-4UTG, and the new ones are HR-3UTGA and HR-4UTGA.
    And as someone mentioned above, the new ‘XX powered by eneloop Technology” have the higher capacity, but rechargeable only 500 times.

  60. Bob says

    Occassionally we experince power outages; the most recent was for two days. My goal is to have rechargeable lanterns for us to use in such occassions. I recently bought a Coleman model 2000006663 LED lantern that can run either on a CPX6 cartridge or on 4 D cell batteries. I also have a solar charger that can recharge rechargeable batteries. My question is this: since these batteries may sit unused for years, which D Cell rechargeable battery would you recommend? I have to recharge the CPX6 cartridge once a year, when it is not in use.

  61. Carl says

    Sounds like you have experienced pretty typical German customer service.

    I was considering the Ansmann Energy 8 plus charger until I saw a number of reviews saying that it frequently refuses to charge batteries and sometimes will charge the same battery it previously would not after re-inserting. It’s an expensive charger and too expensive to have such problems, so I won’t waste money on it.

  62. G Little says

    eneloop has a XX version of 2500mah , now. So it’s good in high end flash devices like cameras and video.

  63. Felipe says

    This may sound stupid but I’m planning to buy som eneloop XX battery, but I don’t have enought money to spend into a charger. Can I use my old Sony Cycle energy BCG-809HNB with my new batteries?

  64. fiesta says

    dear visitors,
    I do load my enloops aa with a solar charger from cresta (sl878), but I do not know will it stop in time when the enloops are fully charged. I can not see-find out, that this device will stop at time, or stop at all? Can someone help with info ?

  65. Jabman says

    Wondering if anyone can offer a recommendation on a 12V recharger, i.e. a AA battery recharger that can be plugged into a 12V car socket

    If you’d never consider doing this with your Eneloops, why?

  66. says

    Good day! I know this is somewhat off topic but I was wondering if you knew where I could locate a captcha plugin for my
    comment form? I’m using the same blog platform as yours and I’m
    having trouble finding one? Thanks a lot!

  67. mick Derriks says

    What would you describe as the highest capacity battery when the time they hold their charge is not important. ie <you load today and use till empty the next day. So total capacity is more important than the time for self discharging. (Ansmann 2850 or Vapex 2900 are among the highest I found, but how real are these capacity's)

  68. Anonymous says

    It was a good start but where are any of the solar energy rechargers? I felt like this whole article was a walking ad for eneloop. too many glossy pictures and not enough hard data. Thanks for trying. It gave me some ideas of what to look for.

    • Anonymous says

      I was just about to go with Eneloop until you mentioned this. I feel that you are right that this was sort of a walking ad, or at least a bias add. I wish Consumer Reports reviewed rechargables.

      • web master says

        Not sure why you guys think I’m biased, Eneloop performs a better than the other batteries. However, the other brands I mentioned are good too!

  69. J.B. says

    I have an “Energizer Class 2″ charger that came with Energizer Recharge AA batts(2300 mAh Nimh0. Can I use this charger to charge other brands of recargeable batts?

  70. says

    I’ve been using the Ray-0-Vac 15 minute rechargeable batteries from some time now, but they are coming to the end of their usable life. I use them for my on camera flash (SB-800). Is there another 15 minute rechargeable battery out there that’s as good?

    • Jason Woodson says

      No, there is such thing as a good 15-minute charger. The problem is that it charges in 15 minutes. While that may sound good to have batteries charged in 15 minutes it destroys the acid inside the battery from having too much current pushed through them. A good charger doesn’t charge faster than 1 1/2 hours and pulse charges the battery not raw current.

      • tt says

        I used to use the old blue pack charger with a battery holder, and I am thinking it used raw current, and it waited for TOO LARGE of a voltage drop before stopping. I have ruined about 200-300 dollars worth of batteries, and I found the same charger in the airsoft forums! Some of them even bulged and leak, and I had one that actually blew its seal and spilled acid! Even my Nicads got ruined with even the lowish 0.9 AMP setting. I am using Maha charger currently.

  71. says

    Why spend money for a charger that’s “solar powered” what people really need is a solar panel, a rectifier and a battery and then a cheap inverter and now they can use the power for whatever device they want.

  72. says

    Apple rechargables are the best!! Suck it Android batteries.

    Yeah, Apples are rebranded Enloopes. It’s actually a better deal just to get the originals because you get more batteries for the same price.

  73. says

    We all should do our share in taking care of our environment. We can start by going green. I found this fun social networking site,, that lets you share green acts with fellow environmental advocates.


    Hello. I have 8 Eneloop, 8 Ray O Vac and 6 Duracell (all 2000 mAh) batteries for use in photography equipment and daughther toys. I think all of them are excellent batteries. My problem is the charger (I have 2) Digipower DPS-3000+ brand, almost unknow, I get it in a promotion half price in Amazon. They are suposed rapid charger, charge 4 batteries in a bit over 3.5 hours, and end of charge detection by -dV 0-24 mV. Six batteries of that brand dead in 2 years, so I have some fear about the charger. Until now they work as advertised but I would like to know if some one have experience with them. Happy New Year and thanks on advance.

  75. AT says

    About the Ansman battery charger: On Amazon reviewers are saying that although the name is German, this battery charger is made in China.

  76. Discouraged Consumer says

    I think all this about length of charge and milliamp-hours misses the point: if I am told to put 3 AA batteries into a gadget, it needs the voltage to drive the gadget. If the volts are insufficient, it won’t be right for the use of the gadget.

    I am returning Energizer rechargeables which, after the recommended charging time, only made 1.42 volts, in a standard 1.5 TV remote, in this case. After a few hours, it would not function properly. And the rechargeable AA batteries were only rated for 1.2 volts!!

    In Direct current, voltage matters; Alternating Current it does not.

    • web master says

      Only in some rare occasions will a gadget have problems with the voltage of rechargeables. Personally, I’ve never encountered a gadget that will not run on rechargeables, and this includes their use in bike lights, flashlights, remotes and toys.

    • Richard says

      Discouraged consumer, I agree with web master: The slightly lower voltage of a rechargeable battery will RARELY ever be a factor. Both conventional carbon-zinc batteries and alkalines quickly lose their initial higher voltage in use, whereas nickel-metal hydride rechargeables maintain their initial voltage for a much longer period. They also generally have a higher milliamp hr capacity than alkalines and are MUCH better in high drain applications, such as digital cameras and strobe lights.

      Rechargeables were designed for and may still work best in high drain situations, such as cameras, stobe lights, toys, power tools and heavily used flashlights. That is due in part to their self-discharge characteristic. Except maybe for the newest models with a very low self-discharge rate, they really aren’t that well suited for use in low drain applications such as clocks and remote controls where a battery typically lasts a year or so. At least until very lately, and maybe still now, I’ve considered alkalines best for those applications.

      In short, I think you are putting much too much emphasis on the slight voltage difference between alkalines and rechargeables. In real life use, it’s almost never a factor.

  77. Jasmine says

    I have been using SANYO ENELOOP batteries for a few years. They are totally worth to buy and use. Batteries can last for a very long time. Love this brand. I am gonna get XX of them. lol

  78. tt says

    I got a set of Sanyo XX Eneloops after the Kodaks were sadly discontinued, and I love the new Sanyo brand I have. Worth every penny. You just have to remember to keep the stronger cell on every 2nd, 4th, e.t.c bay if using the Maha C808m, and they will eventually even out and stay there. You do have to manually terminate the charge on the first charge as this charger does not do a good job of forming the cells.

    • says


      I just got the Maha MH-C808M…

      “You do have to manually terminate the charge on the first charge as this charger does not do a good job of forming the cells.”

      What (I don’t understand)? I can not leave them in the charger for a week? I have to “manually terminate” because of “forming the cells”?


  79. BahoPuwet says

    I don’t know if this thread is a promo ad/posting for Eneloop but i know this:
    – they are highly rated by users/consumers per Amazon dot com;
    – a friend of mine has been using Eneloop and he swears by them… that they are Gr8
    – I just got them from Target on-line, so far so good I’ve only had them for a few days
    – will post updates when appropriate

    Dec, 2013

  80. says

    i bought a battery charger for my TENS UNIT and the ENERGIZER BATTERIES are not recharging enough to charge my unit for a full day. i dont know if they make a rechargable 9-volt that lasts for a day but i have not seen these batteries or the charger for the batters what store carries them and how expensive are they thank you for your time

  81. William says

    Anyone have any perspective on the Amazon Basics High Capacity AA batteries? They are approx 50% less expensive than the Eneloop Pro XX and currently have a 4.4 rating (vs 4.9 on the Eneloop).

    • web master says

      I’m sure they are decent batteries, but from everything I heard, Eneloops have a definite performance edge.

  82. Jim says

    great article; I’ve been using maha powerX AA &AAA for about ten years, since I got my first digital camera. I went thru two sets of copper tops in about thirty pix. I was, woe this is going to get real pricey quick!! So I went on line and hit a battery research site;long story short Maha powerX was THE go to for digital cameras. Later I got into their Imedion 2400 mah, and I’ve had great luck with the dumb charger. Think I may get into one of the smarts. I may try some of those Eneloops if/when? the Imedions finally die. Thanks, One very satisfied customer!

  83. ed says

    I’ve been using Sanyo’s AA Eneloops for a few years now on my Canon S2is digital cameras and they do lasts longer than most AA’s i’ve used in the past.

    On my Xbox 360 controller. i have the XX Eneloops and they lasts for weeks.

    Recently, i’ve been using Duracell Pre-charged AA 2400mah batteries on my cameras and they worked just as well as the Eneloops.

  84. says

    This article may need an update. I find the envelop pro recommendation as the ‘best’ to be outdated. The gen IV Panasonic brand Eneloops can be recharged 2100 times versus the 500 times for the pro and retain their charge for much longer. The Modest reduction in capacity is in my opinion more than compensated for by the 4X better durability and very low self discharge characteristics of the newer Eneloops.

  85. Todd says

    It’s also important to keep in mine their cycle life. For example the Eneloop Pro‘s have the highest capacity at 2550 mah but only last 500 charge cycles, compared to 1000 charge cycles for the Imedion cells at 2400 mah, and 2000 charge cycles for the 2000 mah normal Eneloop cells.

    So while the Eneloop pros might be the highest capacity, they are more expensive and will only last 1/4 as long as the normal eneloop cells. It also depends on how you use them, if you only charge them twice a year in rarely used items, you’ll likely never wear any of them out so then capacity might be worth it.

  86. CKJAGUAR says

    One word of warning. LaCrosse products have no customer service or support, none at all, anywhere. This is evident from the lower ranked customer reviews on Amazon.

  87. says

    If I buy for high performance batteries with higher energy capacity, then I will get far less charging cycles, and if go for higher charging cycles, then I lose the capacity. I am quite aware of that. Tell me if you got that can give me a balance of both?

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