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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 5...
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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 5...