1. One-to-two battery converter 2. Can install 2 batteries, strong battery life 3. It can be connected to an external charger to charge the battery 4.Easy to install,locks on you battery very well. 5.Suitable for impact drills, impact wrenches, and work lights. Maximize Your Tool's Performance: Upgrade your power tools with our versatile battery converter. Designed to double the battery capacity, it ensures longer operation times and enhanced efficiency. and Reliable: Built with high-quality materials, our battery converter is both and reliable, ideal for demanding tasks and continuous use. Color: Black Material: plastic Package Contents: 1 x battery converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.