Link Dream 3.7V 2 x 3800mAh Li-ion Battery + US Plug Battery Charger for Samsung Galaxy S5, I9600, Verizon G900V, AT&T G900A, T-Mobile G900T, Sprint G900P High Quality and brand new High Capacity Replacement Battery It is recommended to fully drain and fully charge the battery especially during the first 3 charging and discharging cycles, doing so may greatly improve the overall life of the battery