My Ninebot One E+ hasn't let me down ever since I bought it, but on some of these crazy steep hills I'm braking while going down often scare me a bit.  I still have to buy a tether.  I don't overspeed going down a hill as that is surely a one way ticket to faceplantville, but even at regular under 22 kph speeds, I wonder what would happen if suddenly something shuts down or overheats?  I'm guessing I would fall backwards while the wheel shoots forwards down the hill. Do the MOSFET stay rela