High safety, no explosion Can use any object shape Specifications: 1. Typical Capacity: 4000mAh 2. Cell Outer Dimension: 15mm (T) x 35mm (W) x 130mm (L) 3. Nominal Voltage: 7.4V 4. End Voltage: 6.0V 5. Charging Current (Std. ): 0.2CA(=800mA) 6. Charging Current (Max. ): 1.0CA(=4000mA) 7. Charging Voltage: 4.25V 8. Charging Time (Std. ): 6~7.0 hours 9. Charging Time (Max. ): 2~3.0 hours 10. Continuous Discharging Current(Max.): 60A 11. Discharging Current (Max. ): 80A 12. Cell Internal Resistance (25degrees): <180mΩ 13. Weight(approx.): 200g Application: Widely used for electric toys, rc models, such as model aircrafts, rc planes, rc boats, rc guns, rc helicopter...etc.Different sizes and different capacities can be ordered by the requirement of clients.