I have tried several char ...
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I have tried several chargers and the duracell mini is the best so far. It can charge 1 or 2 batteries - useful for 1 or 3 battery devices. It senses when the battery is charged , changes led indicator from red to green, and drops current to a safe trickle charge.
Other inexpensive chargers just charge, charge, charge until you unplug , overcharging and damaging batteries.
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