Heating straps from resistors If you can't find a nichrome wire - you can use a "ladder" of resistors as a heating element. Overall heater power between 1 to 4 watts should be enough, depending on conditions. You can use data from commercial heating straps in order to determine the requi...
I’ve not had much luck with the little power banks, but mine is 1/4th the capacity yours is rated at, and those ratings are pretty optimistic. My 5000mAh pack ran 2 heaters for about 15 to 20 minutes, pretty much instantly gave up on that idea. Only thing you can do is try it...
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