The Best Golf Cart Chargers

What do you want in a golf cart charger? Golf cart batteries are lead-acid batteries that operate at 36 or 48 volts. Like all lead-acid batteries, they must be charged at a specific voltage and amperage levels. They cannot be fast charged — a full charge requires 14 to 16 hours.

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A Review Of NiZn Batteries

NiZn (Nickel-Zinc) batteries are a type of rechargeable AA battery that operates with a nominal voltage 1.6 volts, which is very close to the 1.5 volts of alkaline batteries. This makes NiZn battery perform well in high-drain devices like handheld games.

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The Best 18650 Batteries

In a Nutshell Our choice for the best 18650 battery is the Orbtronic cell. This battery has a high capacity (3100 mAh), and maintain their voltage until fully drained. A two-pack of these cells is available at Amazon for around $30. Also available are Panasonic 18650 cells, with a bit more capacity (3400 mAh). If you are looking for a …

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The Best 9V Rechargeable Battery

In A Nutshell The highest-capacity 9V rechargeable: Accupower’s 300 mAh 9 Volt Rechargeable NiMH Battery The best low-discharge 9V rechargeable: Tenergy Centura 9V 200mAh Low Self-Discharge NiMH Rechargeable Batteries The best lithium-ion 9V rechargeable: EBL 9V Lithium Ion Batteries The Details Low-self discharge 9v Ni-MH batteries have become available in the last few years. The “low-self discharge” label means these batteries …

The Best Rechargeable AA Batteries For Flash

In A Nutshell When recharging a camera flash, you need a battery capable of delivering a high amount of current in a short time. Ideally, you want the batteries with the highest rated capacity. 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 …

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The Best Ni-MH Battery Chargers

In A Nutshell The best Ni-MH (Nickel-Metal Hydride) battery charger is a “smart charger” like the LaCrosse BC-700 Charger (sells for $36).  Smart chargers have circuitry to prevent overcharging and damaging your batteries. They also provide features that allow you to test and “renew” Ni-MH batteries. If you are looking for a charger that also charges C, D and 9V batteries, we …

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Charging USB Devices With AA 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 & Chargers

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

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 nPower PEG allows you to …