YOBI introduces the 18V ONE+ HIGH PERFORMANCE Lithium-Ion 4.0 Ah Battery (2-Pack) with 18V Lithium-Ion Charger. These RYOBI ONE+ 18V Lithium-Ion HIGH PERFORMANCE 4.0 Ah batteries provide up to 4X more runtime, 30% more power, and runs cooler compared to our standard lithium-ion batteries to provide long-lasting reliability and better performance in over 280 ONE+ Products. These HIGH PERFORMANCE batteries also feature the most advanced on-board battery electronics that monitor voltage, temperature, and current to extend the life of the battery. When you pair these HIGH PERFORMANCE batteries with any ONE+ HP tool, advanced technology allows them to communicate to provide the best performance possible that powers through heavier applications and protects against overloading and overheating. They perform in extreme weather temperatures and are engineered to be impact resistant. These batteries features integrated LED fuel gauges to check your battery charge at all times. The included 18V Charger is compatible with all RYOBI 18V ONE+ Lithium-Ion Batteries. Best of all, they are a part of the RYOBI ONE+ System of over 280 Cordless Products that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, these batteries include an operator's manual. 4.0 Ah HIGH PERFORMANCE Batteries: Up to 4X more runtime 4.0 Ah HIGH PERFORMANCE Batteries: Up to 30% more power 4.0 Ah HIGH PERFORMANCE Batteries: Runs cooler 4.0 Ah HIGH PERFORMANCE Batteries: HIGH PERFORMANCE Technology features the most advanced battery electronics for overload and overheating protection 4.0 Ah HIGH PERFORMANCE Batteries: Pair with ONE+ HP tools for optimized performance 4.0 Ah HIGH PERFORMANCE Batteries: Integrated LED fuel gauge to monitor remaining runtime 4.0 Ah HIGH PERFORMANCE Batteries: Delivers fade-free power in extreme weather conditions 4.0 Ah HIGH PERFORMANCE Batteries: Monitors voltage, temperature, and current for longer battery life 4.0 Ah HIGH PERFORMANCE Batteries: Robust construction to protect against impact 4.0 Ah HIGH PERFORMANCE Batteries: Lithium-ion chemical composition resists drainage when idle 4.0 Ah HIGH PERFORMANCE Batteries: Easily snaps into place and detaches with quick-release buttons The included charger is compatible with all 18V ONE+ Lithium-Ion Batteries Part of the RYOBI 18V ONE+ System of Over 280 Cordless Products 3-year manufacturer's warranty Includes: (2) PBP004 18V ONE+ Lithium-Ion HIGH PERFORMANCE 4.0 Ah Batteries, (1) PCG002 18V Charger, and operator's manual