Sitting eating my breakfast and been wondering a few things, which could be a little silly, but
if I had a USB c breakout board, which goes to a boost converter, which would life the voltage to just high enough to charge a 2S BMS. Assuming the BMS would charge 2 26650s which would also go to a boost converter to maintain let's say 8 volts which will run a small bt amp.

Issues I'm thinking at the moment would be the current needed to run the BMS from the usb c. It got me thinking the other day after another post I read, but thinking most will say it's a bust.

Also no talk of actual products as they were slow boat worthy, just not sure the actual concept would work