... , over-charging, over-current andshort-circuit protection, more safeguard for using.2) Gilded and flexible connecter, better conductive properties, ... to rust.3) Safety and stable: Hi-tech lithium-ion 1500 mah battery for samsung galaxy ace, undergoes drop test, ... battery cell, high energy environmental protection 1500 mah battery for samsung galaxy ace, durable energy conservation,long standby time ...