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Amazon.com: TURPOW 2 Packs 6.5 Ah Replace for Makita 18V Battery & Double Rapid Charger Combo, Compatible with BL1815 BL1830 BL1840 BL1850 BL1860 for Makita 18Volt Batteries LXT Lithium ion Cordless Tools :
Amazon.com: Crtbelfy Battery Holder Mount for Makita 18V Battery Dock Holder Fit for BL1860 BL1850 BL1840 BL1830 Batteries - 5 Pack : Tools & Home Improvement