[LED LIGHT] The LED charging indicator (with 4) shows the remaining power during operation and thus extends battery life. Battery Cell Composition: Lithium Ion. [FULLY COMPATIBLE] It compatible with 18V BL1860B, BL1860, BL1840B, BL1850, BL1840B, BL1840, BL1830, BL1830, BL183, BL1815, BL1825, BL1835, BL1845, 194205-3, 199.
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