sea jump 2PCS 7.6V 1100mah Lipo Bbattery Suitable for HS440D Aerial Four Axis Aircraft Folding Remote Control Drone Battery Voltage: 7.6V; Capacity: 1100mAh Product Weight: 62g (1PCS) Product Size: 79X31.5X32.5mm/3.1X1.24X1.28in Package included: 2PCS battery Battery configuration: 2S Discharge rate: 25C Battery precautions: 1. Turn off the device when the battery level is low to avoid deep discharge. 2. Be sure to disconnect the battery from the device when not in use. 3. If the battery is bloated, swollen, leaking, overheated or any other abnormal phenomenon, do not use or charge it. 4. Do not disassemble, puncture, impact or damage the battery. Do not ignite the battery. 5. Do not overcharge the battery. Improper use, such as short circuits or overcharging, may lead to explosions or fires.