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They already make battery powered jumpstart devices, that are not so different from the phone recharging blocks. It wod probably be pretty easy the wire one of
by thehappypm 5y ago
They already make battery powered jumpstart devices, that are not so different from the phone recharging blocks. It wod probably be pretty easy the wire one of those up to a solar panel so that it’s always at 100% charge. But if you’re going to do that, you might as well just fully charge it from the car battery when the car battery is not dead.