... 2V 1500mAh 18650 Rechargeable LiFePO4 Battery, LiFePO4 Battery Pack for Power Tool, RC Toy, Electric Vehicle 3.2V 18650 Cylindrical ... battery pack for medical equipment Back-up or EPS Emergency Power, Good performance at high discharge current: reach 10C 11. ... . Medical devices5. RC car, boat, aircraft toy6. Solar, wind power energy storage devices 7. Digital camera, laptop/notebook, GPS devices ...