... .2V 1500mAh 18650 Rechargeable LiFePO4 Battery, LiFePO4 Battery Pack for Power Tool, RC Toy, Electric Vehicle 3.2V 18650 Cylindrical ... half hour10. Perfect for building up battery pack for medical equipment Back-up or EPS Emergency Power, Good performance at ... -bike, Electric scooter, Electric Car, etc.2. Power tools, UPS and solar energy system. 3. Military equipment: IR telescope4. Medical devices5. ...