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Some back-of-the-envelope calculations: 12 volts * 4 amps = 48 watts * 8 hours = 384 watt-hours. That's the minimum battery capacity you'll need to power this for a night. The Goal Zero Sherpa 50 you propose to use will power it for about an hour, give or take efficiency losses. To power the blanket for the night, you're looking for something more along ...


Apart from the often mentioned possibility of bringing enough batteries or buying new ones along the way, I would like to list possibilities for recharging. As already mentioned by @LBell, there are the following two: Solar: Solar panels come in a great variety, allowing to find something for most uses. Some models might be able to charge during the hike ...

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