This LG Battery BL-49JH is a reliable replacement for LG K3 K4 Optimus Zone 3. With a capacity of 1940mAh, it provides 3.8v power output and features a plain, slim design/finish. This battery is compatible with LG K3 and LG K4 models and is an OEM product. It is suitable for those who are looking for a battery replacement without compromising on performance. This battery is designed to meet the needs of the device and ensures a longer lifespan. It comes in black color and is a great choice for those who want to replace their old battery.