Amazon.co.jp: Makita BL1840 Compatible Battery, 18 V, 4,000 mAh, Large Capacity, Lithium Ion Battery, Compatible with BL1830, BL1840, BL1850, BL1860, Set of 2 : Electronics
VANON Pack of 2 18V 6.0Ah Li-Ion Replacement Batteries for Makita 18V Battery, Compatible with BL1850 BL1850B BL1860B BL1860 BL1840B BL1840 BL1830 BL1835 BL1845 LXT-40 0 for 18. V tools: Amazon.de: Electronics