... Double Protection IC with NTC offer over-discharging, over -current and short circuit protection, more safe-guard for using; 3, Gilded ... , better conductive properties, not easy to rust; 4, Safe and Stable: Hi-tech lithium bettery undergoes drop test, smash test ... high energy environmental protection, durable energy conservation, long standby time and long talking time 6, Working temp: -15 to 50. ...