RYOBI introduces the 18V ONE+ Lithium-Ion 4.0 Ah Battery (2-Pack) with 18V Lithium-Ion Charger. These RYOBI ONE+ 18V Lithium-Ion 4.0 Ah batteries provide up to 3X more runtime compared to our 1.5 Ah standard lithium-ion batteries. The are compatible with over 225 18V ONE+ Tools to power you through all types of projects. Thjey have a compact design for less weight and reduced user fatigue. They also feature professional grade lithium-ion cells to provide fade free, cord-like power. They perform in extreme weather temperatures and are engineered to be impact resistant. These batteries feature an integrated LED fuel gauge to check your battery charge at all times. The included 18V ONE+ Charger is compatible with all RYOBI 18V ONE+ Litihium-Ion Batteries. Best of all, it’s a part of the RYOBI ONE+ System of over 225 Cordless Tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer’s Warranty, this kit includes two 18V ONE+ Lithium-Ion 4.0 Ah Compact Batteries, an 18V ONE+ Lithium-Ion Charger, an operator’s manual.