Since my girlfriend has picked up vaping as well, outlet space has started to come at a premium in the bedroom. I've been using my USB charger lately for convenience but now my USB ports are coming at a premium. 
Has anyone used an AC powered USB hub to charger batteries through their USB adapters? In theory should work but wondering if they maintain a reliable 5v output.
Has anyone used an AC powered USB hub to charger batteries through their USB adapters? In theory should work but wondering if they maintain a reliable 5v output.