4000mAh | 18V | Li-ion. The BL1840 Lithium-ion Battery has no memory effect, no content of toxic and harmful substances, high current charge-discharge capability, great energy density and long cycle life.
This replacement for Makita 18V battery 100% compatible with original Cordless Power tools and chargers,replace battery for BL1850, BL1840, BL 1830, BL1815, BL1835, BL1845, 194205-3, LXT-400, 194309-1.
This replacement BL1850 battery built-in Protection against overcharging, over discharge, over current. Using qualified products safely.
This replacement 18v Makita battery are CE, FCC and ROHS certified and tested by manufacturer to match OEM products.