Battery Charger 48V 20AH Lead Acid For Electric Bike Scooters Brand new and high quality. Built in safety recharging system which won't damage your bike's battery. LED indicator light shows when charger is working. Input voltage: 220V, 50Hz. Output power: DC 48V. Output current: 1.8-5.0A. Size: 17cm x 9.5cm x 6cm. Note: please make sure the polarity connects correct.