UDIR/C 1pcs 3.7v 600mah Li-ion Battery and 1pcs USB Smart Charger for UDI Rc Venom Electric Boat Udi001 An original quality Replacement battery for UDI R/C UDI001 Venom Speed Boat Keep one more battery and smart USB charger , have more driving time and more fun Compact and solid body ensures the battery more stable and shockproof With charging protection design Completely compatible for UDI R/C UDI001 Venom Speed Boat