how do you charge the battery for a moped/scooter? how much does a charger generally cost?
Motorcycle and scooter batteries have to be charged at low amperage. If the charger does not have an option to provide low current then you need a different charger. The easiest way to do this is just buy the battery from a motorcycle shop, they should give it to you fully charged and won’t cost much more than the Walmart cost.
48V Battery Charger for Electric Scooter Chopper Bikes Home-Made