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
Makita BL1815-2 18-Volt 1-1/2 Ah Compact Lithium-Ion Battery, 2-Pack (Discontinued by Manufacturer) - Power Drill Accessories - Amazon.com