These batteries deliver fade-free power which allow you to work stronger and longer when paired with any 18V ONE+ tool. They have a durably constructed frame for impact protection and an on-board fuel gauge so you can easily check your charge at any time. The included charger provides quick charging times for user convenience. The tool bag is perfect for carrying what you need to the jobsite. Best of all, it's a part of the RYOBI ONE+ System of over 125 cordless tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, this battery pack includes two 18V ONE+ 4.0 Ah Lithium-Ion Batteries, an 18V ONE+ Lithium-Ion Charger, a tool bag, and an operator's manual.