Amazon.com: 2Packs Upgraded 5.0Ah 18V BL1850B with LED Replacement Lithium-ion Battery Compatible with Makita 18 Volt Battery for Compatible Makita 18V Lithium-Ion Cordless Power Tools : Tools & Home Improvement
Makita 18V 5.0Ah LXT Lithium-Ion Power Tool Battery, BL1850B at Tractor Supply Co.