RYOBI introduces the 18V ONE+ 4Ah Lithium Battery (2-Pack) and Charger Kit with FREE Precision Craft Rotary Tool. This RYOBI 18V ONE+ 4Ah Lithium Battery (2-Pack) and Charger Kit provides up to 3X more runtime compared to standard 18V lithium batteries. These batteries are compatible with over 280 18V ONE+ products to power through all types of projects. Built with professional grade lithium-ion cells these batteries provide fade free, cord-like power. They are engineered to perform in extreme weather temperatures and are engineered to be impact resistant. They also feature an integrated LED fuel gauge for charge monitoring. The included charger is compatible with all RYOBI 18V ONE+ Lithium Batteries. The cordless convenience of this Precision Rotary Tool allows the user to move to wherever their next project may be rather than worrying about where to find the nearest outlet and extension cord. The 18V ONE+ Precision Craft Rotary Tool's 5 variable speed settings ranging from 4,400 to 23,000 RPM gives users maximum control and accuracy with enhanced performance. Backed by the RYOBI 3-Year Manufacturer’s Warranty, this kit includes two 18V ONE+ 4Ah Lithium Batteries, an 18V ONE+ Charger, a FREE 18V ONE+ Precision Craft Rotary Tool includes 12 engraving, carving, sanding, polishing, cleaning, etching accessories, and an operator's manual.