Battery charger?
 

Can anyone recommend a battery charger for the RPS magician 250cc?

what do you want this charger to do....
charge a flat battery or just keep a charged
battery topped up while not using the bike...?

.

I would upgrade the stock battery first. The stock one is mostly trash. Mine lasted a month at most.

1 amp float charger is fine for these. They are 7-9ah batteries so 1amp is just over there recommend charge current but it's fine. They will maintain the battery while it sits dormant which is very important if you want it to last. There are tons of options on Amazon for $15-20, the more expensive one at harbor freight is fine too but wait for it to go on sale.