The products are only used for flexible conversion between one power tool and another lithium battery, and do not involve any other ! The products are only converter, not charger, not battery, not machine, also can not recharge battery by it. For series 18V lithium battery convert to For / 18V lithium battery. Top of the converter: Convert to for battery:BSL1815, BSL1815X, BSL1820, BSL1825, BSL1830, BSL1830C, BSL1840, BSL1850, BSL1860. Bottom of the converter: Suitable for series 18V Lithium-Ion Battery: BL1815, BL1815B, BL1820, BL1820B, BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1850B, BL1860, BL1860B, BL1845, BL1890, BL1890B. Instruction guide: 1. Inert battery into battery adapter( direction) properly and insure battery safety button fit to adapter properly. 2. Inert battery adapter with battery to tool( direction) properly and insure adapter safety button fit to tool properly, then start to use tool. Colour:Black Material:Plastic Package Contents: 1 * Adapter (no battery, no tool) 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.