I have a 1300ma 7v8 battery, according to the tester 8v2 and with a rectifier board it comes out according to the tester 5v2. According to the board it supports up to 8A, 5x8 in theory is 40w, I’m confused and I’m thinking about buying a power bank but there are 5v, 120w or 66w ones and I don’t know if there’s a problem, I need to free the rectifier board from the power cable. What do you think? Thanks.
