Ahhhhhhhh lighting has many electrons!
And a dead short in a series of Batteries with positive hot cables hooked to a charger. Maybe not fused that would result in glowing wires and melted plastic followed by sparks and a fire.
Heck Ford has been burning down Garages and catching vehicles on fire for years. Low bidder on them electrical switches.
I think that is what was meant?
Never thought about a electrical fire from a Charging Cart- NOT GOOD!