Home Depot offers RYOBI ONE+ 18V Lithium-Ion 4.0 Ah Battery (2-Pack) with 18V Charger PCL204KN for $79 (orig. $174) with free shipping.

Product Description:

RYOBI introduces the 18V ONE+ Lithium-Ion 4.0 Ah Battery (2-Pack) with 18V Charger. These RYOBI ONE+ 18V Lithium-Ion 4.0 Ah batteries provide up to 3X more runtime compared to our 1.5 Ah standard lithium-ion

Thanks Maggie