mobile phone battery 1.Cell chemistry PCM:Li-ion battery2.Double protection IC with NTC offer over-discharging, over-current and short circuit protection, more safe-guard for using.3.Gilded and flexible connector,better conductive protertiey, not easy to rust.4.Safety and stable: Hi-tech lithiun battery,undergoes drop test,smash test and punchture test to ensure, no fire and explosion in breaking.5.Grade A Li-ion battery cell, high energy enviornmental protection,durable energy conservation,long standby time and long talking time.6.guarantee time:1 year7.working temp: -15 to 50.We can make most kinds of mobile phone batteries. For more details of our company and products pls feel free to contact with us by marlyna-1980 hot mail com!We will give you reply soon!