There are plenty of cheap battery chargers on the market. If you are serious about extending the life of your rechargeable batteries, you may want to invest in the Powerex MH-C9000PRO. It is a battery charger and analyzer with 4 independent slots. It has a backlit LCD display and shows capacity, voltage, time, and rate.
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The device can charge your batteries, analyze the amount of charge stored in them, and refresh your old batteries. It has a memory feature to remember the last setting used. The Powerex MH-C9000PRO can charge 1 to 4 AA & AAA NiMH/NiCD batteries in an hour.
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