(04 Feb 2021, 2:25 pm)streetdeckfan wrote I've had the opposite issues, the 240v sockets rarely work properly on the StreetDecks/B5s (even the brand new StreetDecks) whereas the USB ports pretty much always work.
They're not the fastest chargers in the world, but they charge my phone from 20-100% on the X21 journey.
The only time I really use the 240v sockets is to charge my laptop (which is against the rules, but yolo), but they can only handle it when the laptop is turned off, apparently the inverter they use isn't powerful enough for a gaming laptop playing at full power (not that I've ever tried or course!)
I've found that USBs, particularly stuff new in the last few years (GNE 67-plate Streetdecks/B5s onwards, ANE 17 plate MMCs etc), are generally pretty reliable. The ones found on Stagecoach Elite i's have always provided me with the most joy mind, not sure if they have a larger power source given they're a long distance vehicle by design? Either way, if working I generally find USB charging gives 1% every 2-3 minutes.
I've always found the on wall plugs a bit naff - think I remember reading that once one of them goes, they all go, whereas with USBs they're all independent?
In terms of cables, I've never noticed a huge difference. I've used both OEM and third-party cables with both my old OnePlus 7Pro and my Xperia 5II, both of which have identical battery capacities, and they charge at similar rates through USB - mind the former always got warmer to the touch when charging on a bus (but that's more down to the phone).