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Although there are many lives have been unable to use, but still have a little residual battery power.
It is a means of collecting the remaining battery power, the electricity will be used as a collection of lamps, or plugged in as an additional purpose.
Can be separately applied to two common AA and AAA batteries, you can put up to 10 or 10 AAA AA batteries plus 4 AA batteries.
Tzu Chier Wang,