for 6.0Ah Ryobi 36V 40V Battery HP Li-ion BPL3626 BPL3626D BPL3640 BPL3640D | eBay
For 6.0Ah Ryobi 40V Lithium Battery HP Li-ion BPL3626 BPL3626D BPL3640 BPL3640D 619954282563 | eBay
Synergy Digital Power Tool Battery, Compatible with Ryobi BPL3640 Power Tool, (Li-ion, 40V, 3000mAh) Ultra High Capacity, Replacement for Ryobi BPL3626 Battery - Walmart.com