Durable and reliable. The FIX4smarts Apple iPhone batteries convince with first-class, certified OEM quality and compatibility. The perfect alternative for any smartphone technician. Technical data: - Type: Li-Ion Polymer - Voltage: 3.7V - Capacity: 1420mAh - Up to 800 charge cycles - Weight: 25.85 g Contents: - Battery Compatible with Apple iPhone 4 APN: 616-0512 APN: 616-0513 APN: 616-0520 APN: 616-0521