https://www.homedepot.com/p/RYOBI-O...h-2-Ah-Battery-and-Charger-PCL400K1/335649161 RYOBI ONE+ 18V Cordless 4-1/2" Circular Saw Kit w/ 2Ah Battery & Charger (PCL400K1) for $49.88. Free store pickup is available where stock permits, otherwise shipping is $2.99.