View attachment 19453 Here's my setup. I can charge the leisure batteries from solar, the van engine and also from a hookup on a campsite etc using the charger on the right.
I've got 2 batteries as I run a fridge in the van, I reckon you could get away with one as an ebike charging station, you just need the right size invertor.
My charger is 2.5amp @ 230 (Shimano) so 2.5 X 230 = 575 watts minimum, so I got an 800 to be safe.
I'd be wary of cheap invertors as they rarely give the rated output and might give a dirty signal that causes issues with electronics.
I had my ebike charger on test to see exactly what it was drawing and never went over 0.8 not sure if that's volts or ah now.
Either way it's nowt