A:AnswerMine holds a charge for weeks if I don't use it for anything. I haven't done it on purpose to check for longevity but I know I had lost it for over a month and it still had a full charge when I found it again.
Also if you aren't charging something big it can power something for awhile. My smartwatch can charge to full probably 5 times before I lose a light indicator. For my cellphone it obviously takes more juice, but I can charge it from empty at least two times, probably three.
Hope that helps!
A:AnswerWe haven't tested the powerbank with a heated vest. But as long as the heated vest is recharged via USB-A to USB-C/micro cable, they should work together.
