The iPhone 4 Replacement Battery 616-0512 1420mAh is specifically designed for Apple iPhone 4 models. With a capacity of 1420 mAh, this internal battery is in black colour and is compatible with the device. The battery comes with one port and is a reliable choice to keep your mobile phone powered up for extended use. Ideal for those in need of a high-quality replacement battery for their Apple iPhone 4. sold as seen, untested