Amazon.com: Synergy Digital Power Tool Battery, Compatible with Makita TP131 Power Tool, (Li-ion, 18V, 7500mAh) Ultra High Capacity, Replacement for Makita BL1815 Battery : Tools & Home Improvement
Amazon.com : Powtree BL1815 18V 3.0Ah LXT Lithium-ion Replacement Battery for Makita BL1815 BL1830 BL1860 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 BL1860B Cordless Power Tools Series : Tools & Home Improvement
Amazon.com : Powtree BL1815 18V 3.0Ah LXT Lithium-ion Replacement Battery for Makita BL1815 BL1830 BL1860 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 BL1860B Cordless Power Tools Series : Tools & Home Improvement