Amazon.com: Amityke Battery Adapter,Power Wheels Adapter for Makita 18V/14.4V Battery BL1820, BL1830, BL1840, BL1850 with 14 awg Wires Power Convertor for DIY Ride On Truck, Robotics, RC Toys and Work Lights :
Amazon.com: Battery Charger Compatible with Makita 14.4V/18V Lithium-ion Battery,3.5A DC18RC Battery Replacement Charger with LCD Screen Charging for BL1830 BL1815 BL1430 BL1850 BL1840B BL1820 BL1860 BL1450 : Tools & Home Improvement
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Amazon.com: 2 Packs 3.0Ah 18 Volt BL1830 Battery Replacement for Makita 18V Battery Lithium Ion BL1815 BL1820 BL1830B BL1840 BL1850 BL1860 BL1860B LXT-400 Cordless Power Tools Batteries : Tools & Home Improvement
Amazon.com: 【Upgrade】 CaliHutt 18V 6.0Ah Replacement Battery for Makita 18V Battery with LED Indicator BL1830 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 LXT-400 LXT Cordless Power Tools Lithium-ion Battery : Tools & Home
Amazon.com: Upgrade 3.0Ah 18 Volt BL1815 Lithium Ion Battery Replacement for Makita 18V Battery BL1815 BL1830 BL1860 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 BL1860B with LED Indicator : Tools & Home Improvement
Amazon.com: BL1850 Battery for Makita BL1815, BL1830, BL1835, BL1840, BL1860, LXT400, 194204-5, 194205-3, 194230-4, 194309-1 : Tools & Home Improvement