Defiant spare power charger. Plug into frame or into battery directly when it's outside of frame. Output 54.6V, Input Voltage 100-240VAC 50/60Hz. Indication LED turns from red to green when battery is fully charged. Stops automatically when battery is full.

Jupiter Bike Batteries have a 90 day warranty. Proper care and charging steps will help the customer experience. Please share the following Best Practices:

1. Prior to charging the bike, make sure the CHARGER is NOT plugged into the wall yet.

2. With the CHARGER not plugged into the wall, insert the CHARGER TIP into the bike or battery port. 

3. Once the charge is plugged into. the bike safely and correctly, (next)

4. Plug the charger into the wall.

5. The charging light should turn RED indicating Charging.