Hyperion Samsung Galaxy S4 Active 2 x Battery + Charger for Samsung Galaxy S IV Active (Compatible with AT&T S4 Active SGH-I537 / And all International S 4 Active Models) [2 Year Warranty] Battery type: Li-ion; Voltage: 3.8V; Capacity: 2600mAh / Comes with 2 x 2600mAh Batteries and a Battery Wall Charger (As Pictured). Batteries Use Top 10% "Grade A" cells to ensure longer battery life and charge cycles; More than 500 recharge cycles over the life of the batteries. Compatible with various devices: Compatible with AT&T S4 Active SGH-I537 / And all International S4 Active Models 24 Month Manufacturer Replacement Warranty. Now with NFC / Google Wallet Capabilities! Same Or Next Business Day Shipping Available!