Home Depot is currently offering a pair of RYOBI ONE+ 18V Batteries for $99 shipped. This is $40 off the usual $139 price you’d pay for the 4Ah and 6Ah battery combo. It’s a new all-time low, too. Upgrading your RYOBI tool arsenal, these rechargeable batteries are compatible with the entire ONE+ ecosystem. Whether you’re looking to upgrade an old set of tools with some new juice or want to get in one of the more robust ecosystems for the first time, this combo with two different capacity batteries is hard to beat value-wise.