USA Toyz Replacement Battery for UDI R/C UDI001 Venom Speed Boat 3.7V 600mAh Li-ion (Geniune UDI) 7.4v 600Ah Li-Ion Replacement Battery compatible with UDI UDI001 RC Venom Speed Boat Batteries come equipped with built-in protection mechanism for safe charging and use. Enhance your racing experience by using only manufacturer recommended spare parts. Each battery provides 7-9 minutes of racing time. Charging time is between 60-90 minutes. Rechargeable up to hundreds of times.