This is obvious to the point of not reiterating but don't ever plug your stuff into cheap/unknown chargers. I've seen the AC jump across to the low power DC sid

This is obvious to the point of not reiterating but don't ever plug your stuff into cheap/unknown chargers. I've seen the AC jump across to the low power DC side MANY times and it insta-destroys anything designed to just take the +5vdc. I work in the event industry and we supply recharging cabinets for corporate events. We use Anker.