This Pocket Bike has a 12V battery terminal, can I plug it into a wall outlet?

This Pocket Bike takes a rechargeable 12V battery, can I plug the bike directly into the wall outlet using a 12V battery charger so that the bike pulls power directly out of the wall? Just to test if my battery is the cause of the bike not starting? If not, how would I check If the original battery is bad? I don't have any special instruments that would help me tell.

hook the battery charger up to the +- terminals, thatll do you.the guage on the charger should read atleast 2 amps.if it reads none, replace the battery.