thelayman123
- Dec 13, 2022
- 7
- Joined
- Dec 13, 2022
- Messages
- 7
I recently got a DIY powerbank powered with 18650's and tested the output with a usb meter with varying numbers of cells. I got 40Wh with 4 cells but only 128Wh with 14 cells of the exact same voltage at the point of insertion, a 32Wh reduction. Aren't parallel circuits supposed to be efficient? No increased heat production noted, same rate of power output used in all tests, same cells too. Or could my meter be the problem?