Challenger’s 5Ah Li-Ion Charger is perfect for your travel or folding scooter with a lithium-ion battery. This fan cooled charger is an off board lithium-ion battery charger that is very portable and easy to travel with. The auto shutoff feature prevents overcharging. The 5Ah Li-Ion Charger plugs into your scooter’s round 3-pin plug and hooks up to a 110V electrical outlet. Charging cords included. The 5Ah Li-Ion Charger is compatible with many scooters on the USA market today. Charging times vary depending on individual usage. If you use your scooter every day, it is best to charge your scooter every night overnight. Be sure to unplug it in the morning. Always unplug the charger after your scooter is charged. Do not charge your scooter for more than 20 hours. If you use your scooter on a weekly basis, you’ll want to charge your scooter at least once a week overnight. Features: - 110V Input - Output: 29.4V+/-0.2Vdct - USA Power cords - Fan cooled, 3-stage charging for long battery life - Automatic shut off when battery is charged