(11 Jan 2017, 9:22 pm)northern156 wrote My thoughts exactly...! For me, USB chargers merely hold the charge rather than increase it.Really depends on what you are doing whilst charging through the USB's, if you have a fair few energy draining apps running, it barely charges the phone at all but they work okay if you limit the phone activity I've found.
I really hope the bus industry isn't going to start shying away from actual plug sockets.
I personally would rather have weak USB's rather than plugs which often don't work on buses.