for 6.0Ah Ryobi 36V 40V Battery HP Li-ion BPL3626 BPL3626D BPL3640 BPL3640D | eBay
Synergy Digital Power Tool Battery, Compatible with Ryobi BPL3640 Power Tool, (Li-ion, 40V, 4000mAh) Ultra High Capacity, Replacement for Ryobi BPL3626 Battery - Walmart.com
Ryobi BPL3640D2 36V Max Power 4,0AH Lithium+ Batteri