On Thursday, 1 February 2018 11:19:58 UTC, Harry Bloomfield wrote:
tabbypurr has brought this to us :

well be something on the scooter that is at fault although I doubt that

that can't be the cause

It would be trivially easy for someone not very careful with a tendency
to fiddle with things, to reverse the connections between battery and
charger.

that would do it. So it depends whether any wires have been messed with - the usual connectors won't go in the wrong way. And the scooter wouldn't function with its batteries wired in reverse - unless it's really ancient.


NT