Upgrade the power source of your LG K4 or LG Optimus Zone 3 with this high-quality BL-49JH phone battery. It has a capacity of 1940mAh and a voltage of 3.8V, ensuring long-lasting and efficient performance. This internal battery is designed with a plain, slim, and matte finish, making it easy to install and carry. The battery comes with a 3-pin connectivity and is compatible with LG phones. It is an OEM product, manufactured in China, and is suitable for use with the LG K4 and LG Optimus Zone 3 models. This package includes one phone battery, and it is recommended to read the California Prop 65 Warning before using it.