Cordless power tools aren’t very useful without batteries. Right now, if you buy a pair of Ryobi batteries (with a charger) from The Home Depot, you can get a free tool worth up to $99 to go with them. You can choose from essential power tools, including a reciprocating saw, a 1/2-inch impact, or even a string trimmer. The compact 2.0Ah pack keeps lighter tools nimble—great for drivers, trim sanders, and oscillating tools—while the 4.0Ah pack delivers noticeably longer runtime for saws, grinders, and yard tools. A solid all-around cutter for DIY and yard work, the RYOBI ONE+ 18V Reciprocating Saw chews through 2× lumber, PVC, and branches.