Already have a One+ battery. For performance, versatility and easy Operation, this chain saw. The One+ cordless Chainsaw features a 10 in. Bar and Chain and a lightweight design to help you get those dead and unsightly branches out of the way in no time. Best of all this Chainsaw will work with any Ryobi One+ batteries you already own, Ni-Cad or Lithium-ion (battery not included.) Work smarter with the Ryobi One+ cordless system.