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Rechargeable Batteries

Charging USB Devices With AA Batteries

In this article, we will share with you some devices that use AA batteries to charge USB-powered small electronics. These devices provide a convenient way to stretch the time between wall outlet recharges.

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The Best Rechargeable D Size Batteries And Chargers

The best rechargeable D size batteries are Ni-MH (Nickel-Metal Hybride) cells that offer a high storage capacity of around 10,000 mAh or milliamp hours. Typically required in high-drain, high-current devices, D size batteries are expensive to replace so the higher the capacity the better. The new Ni-MH rechargeable batteries are able to retain a charge [...]

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Personal Energy Generator Recharges Your Electronic Device While You Move

The new nPower PEG (personal energy generator) by Tremont Electric wowed reviewers at the 2011 CES convention. This back-up hybrid charger allows you to keep your cell phone, iPod, or other hand-held device working while you’re on the go. By harnessing the kinetic energy that you produce through movement, then converting it into accessible power, [...]

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The Best Rechargeable Batteries and Chargers Of 2012

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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MetaEfficient Keyring Tools For 2010

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Here’s a MetaEfficient Keyring. It’s a collection of lightweight, mini-tools suitable for carrying on a keyring.

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Toshiba Dynario Fuel Cell Device Charger

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 grid.

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The Best iPhone Battery Pack

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 [...]

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The Highest Capacity Rechargeable AA Batteries

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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The Best Rechargeable 9 Volt Batteries

When buying 9 volt batteries, you might want to consider a rechargeable Lithium Polymer 9 volt batteries. There are only a few companies that make rechargeable 9V batteries, the brand I like the most is Maha. They make a 9V rechargeable batteries and chargers, both available on Amazon.

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

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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