Are there any power banks that can charge while outputing power?
I know it's not correct forum,but can somebody help me find power bank can do both charge and charge same+fast charge.
Probably don't need larger than 10000 since larger are to heavy+big.
I don't get why they are so hard and rare.do designers avoid them cuse they needs lots additional stuff or is it just controller what cost much compared to regular 1?