The bottom of the converter: for 18V lithium- battery: 48-11-1828 48-11-1815 48-11-1840 48-11-1850 48-11-1860 48-11-1890, 18V lithium battery... for 18V lithium battery to // 18V/20V(MAX) lithium battery tool, through this converter can be ()()() 18V/20V(MAX) lithium battery Use for 18V lithium battery on battery tools, let your for 18V lithium battery share battery with // 18V/20V(MAX) lithium battery tools. Precautions: 1. The adapter has a protective plate. When not in use for a long time, separate the battery from the adapter to avoid damage to the battery 2. This adapter does not support charging the battery 3. There is only one adapter, not including batteries and electric drill tools. The appearance and color of products with different batches, which will not affect the use Colour:black Material:plastic Package Contents: 1 x 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.