Part number SBX:U002 , Please note - Always plug battery charger into scooter before plugging into electrical wall outlet. When charging is complete unplug charger from wall outlet before unplugging from scooter. When a scooter is in storage, recharge the batteries at least eve , Replacement Smart Self Balancing Hoverboard Battery Charger. This charger uses a female 3-Pin Inline connector and 2 Prong Power Cord connector. Will charge a dead battery in 2-4 Hours at 0 to 50 degrees C.