The Best 9V Rechargeable Battery

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Low-self discharge 9v NiMH batteries have become available in the last few years. The “low-self discharge” label means these batteries will hold their charge for a year, unlike previous NiMH batteries. This makes these 9V battery much more compelling, because 9V batteries are often used in applications like fire alarms, where the battery must sit for […]

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The Best Rechargeable D Size Batteries & Chargers

Maha Power X Ultimate Battery Charger

The best rechargeable D size batteries are the new LSD Ni-MH (low self-discharge Nickel-Metal Hybride) cells. These new Ni-MH rechargeable batteries are able to retain a charge for a year, making them suitable for using in flashlights and other low-term applications. See also our full review of the Best AA Rechargeable Batteries and Chargers. 

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Personal Energy Generator Recharges Your Electronic Device While You Move

nPower Peg

The 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, the […]

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The Best Battery Chargers (For D and C Size Batteries)

best-charger-d-size-batteries

We briefly reviewed battery chargers in a previous post “The Best Rechargeable Batteries of 2013“. But let’s take a look at the best “Universal Battery Chargers”. These are chargers that can handle AAA, AA, C, D sized cells, and well as 9V cells.

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