From the category archives:

Rechargeable Batteries

Toshiba Dynario Fuel Cell Device Charger

November 10, 2009

The first commercially available fuel cell device charger is here! (Well, technically it’s only “here” if you’re reading this in Japan, but that should soon change). Toshiba’s Dynario charger packs fuel cell technology into a portable package that can provide instant power to a dead mobile phone or other gadget, completely off the [...]

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The Best iPhone Battery Pack

September 28, 2009

The iPhone can be power-thirsty. For many people a battery extender is an essential iPhone or iTouch accessory. Here are four of the best backup iPhone battery packs.
Note: iPhone battery performance times vary widely based on individual usage habits and applications. Wherever possible we have tried to give details of a backup battery’s capacity relative [...]

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The Highest Capacity Rechargeable AA Batteries

December 18, 2008

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.

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Rechargeable 9 Volt Lithium Polymer Batteries: Efficient

December 16, 2008

When buying 9 volt batteries,  you might want to consider a rechargeable Lithium Polymer 9 volt batteries. As far as I know, iPower is the only company that makes rechargeable 9V lithium polymer batteries. Their batteries are the same size as a 9 volt alkaline battery.

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New Lithium-Ion Battery Recharges To 90% Capacity In 5 Minutes

November 24, 2008

Toshiba has developed a new lithium-ion battery called SCiB (or Super Charge Ion Battery) which can charge to 90% capacity in 5 minutes. The life cycle of the new battery is more than 10 years even if it is rapidly charged and discharged many times. The battery is also mucher safer than other types of [...]

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The PowerGorilla: Flexible Portable Power

October 14, 2008

I’ve been testing a device that just been introduced called the PowerGorilla. It’s a portable power pack that acts an emergency back-up charger for your laptop computer other other electronic gadgets. The battery inside the PowerGorilla is a lithium-ion and weighs just 631 grams (1.4 pounds). The charger will give you an extra 2-5 hours [...]

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LiFePO4 Batteries: A Breakthrough For Electric Vehicles

September 21, 2008

Soon, we’ll probably be seeing Lithium Iron Phosphate (LiFePO4) batteries being used in most electric cars and bikes. This new battery type is set to dominate the market. Based upon lithium ion technology, LiFePO4 batteries offer many advantages over lithium cobalt dioxide (LiCoO2) batteries which are commonly used in laptops, mp3 players and cell phones.
In [...]

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A Portable Kinetic Motion Charger

August 26, 2008

A company called M2E Power has announced plans today to release a charger that will powered by kinetic motion. The released date is expected to be next summer. The charger derives power from the motion of walking, jogging, cycling, or driving. Six hours of motion provides 30 to 60 minutes of charging power. It will [...]

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Universal Battery Chargers: A Review

July 6, 2008

We briefly reviewed battery chargers in a previous post “The Best Rechargeable Batteries of 2008“. Here’s a closer look at the best universal battery chargers, or chargers that can handle AAA, AA, C, D sized cells, and well as 9V cells.

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The Best Rechargeable Batteries and Chargers Of 2009

December 27, 2006

Today, the best rechargeable batteries are the new hybrid Nickel-Metal Hydride (Ni-MH) cells. These hybrid batteries have a lot going for them: they come fully charged (like alkaline batteries), and they can hold their charge over may months (unlike regular Ni-MH rechargeables). Because they can hold their charge for so long, they are suitable for [...]

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New “Eneloop” Rechargeable Batteries From Sanyo

December 1, 2005

Sanyo has developed a rechargeable battery that comes charged — so buyers don’t have to charge it before use. The new battery is a nickel metal hydride (NiMH) cell of the type commonly found in many portable electronics products but with a key difference. Typically, NiMH batteries lose charge over time if they are not [...]

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New Energizer 15 Minute NiMH Charger

November 9, 2004

Not long ago Rayovac released a 15 minute battery charger, raising the bar for NiMH battery chargers. Up until that time rechargers took from 7-24 hours to fully charge AA and AAA NiMH batteries. The only catch was that you had to buy special Rayovac 15 minute batteries to put in the 15 minute charger.
Now [...]

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Rayovac I-C3 NiMH Chargers and Batteries

July 30, 2004

Rayovac has released a new line of NiMH batteries called "I-C3" which charge in 15 minutes. Based own experience, these batteries do live up to their claim and recharge in 15 minutes and are very long lasting.

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NiMh Battery Charger: POWER 2000 XP444AC-DC

July 28, 2004

One of the best charger/battery series available. The batteries are
rated at 2400mAh – one of the most powerful out there. Quick charges
in about an hour, then switches to trickle charge. Comes with a 12V adaptor.
Purchase from: Amazon ($29.88)

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