Features: 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 -ta impact drills, impact wrenches, and work lights. Specifications: Size:135 x 100mm Color: black+red Material: plastic + metal 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.