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Amazon.com: Upgraded 4.0Ah BL1830 LXT Lithium-ion Replacement Battery for Makita 18V Battery Replacement BL1815 BL1830 BL1860 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 BL1860B Cordless Power Tools Series : Tools & Home Improvement
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Amazon.com: Upgraded 3.0Ah 18 Volt Lithium-ion BL1830 Replacement Battery Compatible with Makita 18V Battery BL1815 BL1820 BL1820B BL1830B BL1835 BL1840 BL1850 BL1860 Cordless Power Tools : Tools & Home Improvement