2 x 18V 5.5Ah BL1850B Lithium-Ion Batteries. Output: 14.4V~18V (Li-Ion). Lightweight: Our batteries are 40% lighter than Ni-Mh alternatives, making them easier to handle during extended use. Compatible with a range of models including BL1830, BL1850, BL1860, BL1820, BL1825, BL1835, BL1840, BL1845, and LXT400.
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