Details Panasonic Battery Features: 1, good safety performance: No electrolyte leakage under normal use, no cell expansion and rupture. 2, the discharge performance: stable discharge voltage, discharge platform gently. 3, good resistance to shock: fully charged battery completely fixed to 4mm amplitude, frequency 16.7Hz vibration 1 hour, no leakage, no cell expansion and cracking, open circuit voltage is normal. 4, good impact resistance: the battery is fully charged state natural height from 20cm down to 1cm thick hardwood board 3 times. No leakage, no cell expansion and cracking, open circuit voltage is normal. 5, resistance to over-discharge: 25 degrees Celsius, the battery is fully charged state of constant resistance discharge 3 weeks (equivalent resistance of the battery discharge requirements 1CA resistance) to restore the capacity of more than 75%. 6. Good resistance to overcharge: 25 degrees Celsius, a fully charged battery charging status 0.1CA 48 hours, no leakage, no cell expansion and cracking, open circuit voltage is normal, the capacity retention rate of over 95%. 7, resistance to high current: fully charged battery discharge 2CA 5 minutes or 10CA discharge for 5 seconds. No conductive part of the fuse, without the appearance of deformation.