ShowJade® 3.7V 500mAh Battery for UDI U818A RC Quadcopter Description 3.7V 500mAh battery for UDI U818A RC Quadcopter Not compilable with UDI 818a WIFI FPA version, or UDI 835,ShowJade Trademark Products. Features: ShowJade 3.7V 500mAh battery for UDI U818A RC Quadcopter This battery ONLY fit UDI818A, Not Comilable with U845 or u 845wifi Not compilable with UDI 818 WIFI FPA ShowJade Trademark Products. Product Details: Brand: ShowJade Recommended Uses For Product: Radio Unit Count: 1 Count Voltage: 3.7 Volts Reusability: Rechargeable Product Dimensions: 2.36 x 0.59 x 0.2 inches Item Weight: 0.8 ounces Manufacturer recommended age: 9 years and up Is Discontinued By Manufacturer: No Manufacturer: UDI-RC