This LG BL-40MN battery is a genuine OEM product with a capacity of 1000mAh and a voltage of 3.7V. It is compatible with LG phones, specifically the BL-40MN model. The black battery is designed to provide reliable and long-lasting power for your phone. The battery features OEM quality and is a perfect replacement for a worn-out battery. It is easy to install and use, ensuring that your phone remains powered throughout the day. Whether you are a heavy user or just need a backup battery, this LG BL-40MN battery is a great choice.