Bottom of the converter Applicable for battery model: BL1815 BL1815B BL1820 BL1820B BL1830 BL1830B BL1840 BL1840B BL1850 BL1850B BL1860 BL1860B BL1845 BL1890 BL1890B, 18V lithium battery MT18EIN: (1). With MT18EIN, you can use the (for ) 18V Li-ion battery on (for ) 18V electric power tools, replace (for ) -CHANGE (4511437) li-ion battery color: Black Material: ABS Note: (a). This product is only adapter. No includes the battery and machine in the picture. (b).This product does not include machine and battery. The machine and battery in the product description are only used to show the products Package Contents: 1 X Adapter 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.