I'm going wilderness camping in a remote part of Wyoming next week. I'll be in the rough for 7 days. I'm planning to pre-charge all my batteries (6 sets of 18650s) and try to ration my vaping, but I know they won't last. One of the people I'll be with will have a generator for his CPAP machine. Would it be crappy of me to ask if I could charge a pair of batteries off his generator? I ask because it seems to take a significant amount of time to charge a pair of batteries when I'm on household current and I don't want to be a dick considering we'll be an hour and a half from the nearest town so we can't just easily go buy more gas for the generator.
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