This smart charger is a high quality 3 Amp charger that is capable of charging your 48V battery with center pin charging port quickly. The charger is equipped with smart charging technology that automatically stops charging when the battery is fully charged, preventing the battery from burning and ensuring a longer life for your rechargeable battery. With this smart charger, you can be sure that your rechargeable battery is safe and that it will not be harmed. The charger comes with a 1 year manufacturer warranty.