The Highest Capacity Rechargeable AA Batteries

Sanyo XX "Powered By Eneloop"

For powering high-drain electronics such as digital cameras, the most efficient batteries to use are high-capacity Nickel Metal Hydride (NiMH) cells. Higher capacity batteries store more charge and they can power your devices longer.

High Capacity Ansmann Rechargeable AA Batteries

The highest capacity rechargeable AA batteries are: Ansmann’s 2850 mAh batteries and Powerex’s 2700 mAh batteries. Of these two batteries, Powerex’s 2700 mAh gets the most positive reviews from photographers. It received an average of 4 out 5 stars from 98+ reviewers on Amazon.

However, in my opinion, the best choice for a high capacity AA battery is now the Eneloop Pro (aka Sanyo XX Battery Powered By Eneloop). These batteries hold their charge for 12 months. They also have a high energy capacity (2500 mAh), and they perform better than similar high-capacity AAs. See my review here.

 

Comments

  1. says

    As always, this is another great article by MetaEfficient. MetaEfficient seems to be always at the top of battery techs. Here is an article I found recently about NiZn batteries on the market. The reviews for these batteries are mixed, with good use but mediocre storage life . They are supposed to be quite safe for the environment and very recyclable. http://www.fastcompany.com/blog/kit-eaton/technomix/nickel-zinc-rechargeable-batteries-good-single-use-ones

    Also, something to look out for in the future: rechargeable zinc air batteries! I hope they make it to the consumer market. http://www.revolttechnology.com/

  2. says

    Sure it’s quite a bit of extra charge, but the big question is whether it’s worth the much higher price? For example (all prices are approximate from Amazon.com),

    Energizer 2500mAh: ~$20.50/8 => $2.56/battery
    Delkin 2900mAh: ~$17/4 => $4.25/battery
    Ansmann 2850mAh: ~$31/4 => $7.75/battery

    Will I really get 3x the usage out of an Ansmann or even 2x out of the Delkins? If not, then sticking with the Energizer 2500mAh cells is the way to go.

    Just my $0.02!

  3. says

    Becareful about some rechargeables. They can be found in 1.2v rather than 1.5v ( you may nee to check ) and for some devices that need a solid 5v to run – 4 AA batteries at 1.5v is fine where 4 batteries at 1.2v will distress the interal powering or not work at all.

  4. lschaaf says

    Most modern electronics will specify 1.5v Alkaline or Nickel, or 1.2v Ni-MH or Ni-CD, so shouldn’t be an issue if you’re using something in the last few years.

    As for the extra mAh worth the price, it’s what you need the batteries for. If you are a professional or aspiring photographer, the extra power in your flash will make a huge difference in your flash recycle time. Definitely worth it. If it’s for a portable alarm clock, or even wii remotes, you’ll be fine with regular rechargeables, like the Energizer, or even the hybrids, which slow drain for those items only used occasionally.

  5. melodeonman says

    Although the “nominal” voltage is higher for alkaline and zinc batteries (1.5) than for NiMH and NiCd (1.2) the actual voltage varies through the discharge cycle and batteries (all these types) are generally counted as fully discharged with a remaining voltage of 1V. Look at the discharge curves and you will see this means NiMH will work just as well if not better in most applications.

  6. Charlie says

    The bigger issue is charging the cells to full capacity. I use the excellent La Crosse conditioner. In regular charge mode, the 2500-2700mAh cells I have charge to 700-1400mAh. In discharge/recharge mode, the cells charge to near capacity.

  7. John says

    Excellent information everyone, I’m on my 2nd set of Energizer 2500mAh NiMH batteries, these are listed at 1.2V. the first set lasted 15 months and came with the charger for $ 31.97 at Walmart. the 2nd set has lasted 22 months and cost $ 24.99 at The Source (Used to be Radioshack) I had trouble finding the 2500’s it seems they’ve been replaced by the 2300’s.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>