How_to_make_powerful_selfmade_batteries_diy_battery_32.MP4 Sorry, my camcorder battery died at the end of this video. But I hope the message was clear , that these Alufoil-lampblack cells with K2CO3 electrolyte are very powerful for LED lighting and that they are easy to make and you can get alufoil very cheaply from the supermarket, which is the only thing that corrodes and will be consumed in these batteries. So for backup and power outage purposes these batteries are really need to light up LEDs. Regards, Stefan.

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