ZNC&trade; 2600mAh Li-ion Battery for Samsung Galaxy S4 Verizon I545 T-Mobile M919 Sprint L720 A+ Grade Cell, ensuring longer battery life and recycle times Build-in Smart IC, offer optimized Charging process and all around protection Rigorous safety tests, includes impact test, heating test, overcharge test and short circuit test 12 Months Warranty CE and FCC Certified