Wwman 1to3 Charger for Udi001 Udi007 Udi U818S U842 WiFi FPV U842-1 LarkFPV Rc Quadcopter Drone Boat Spare Parts For UDI Udi001 Udi007 RC Boat. Udi U818S U842 WiFi FPV U842-1 LarkFPV RC Drone. Support computer,mobile,power bank charger. Charging 3 batteries at one time, Over charge protection, Short circuit protection. Package included:1pcs 1to3 Charger + Instructions.