Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040 Description Fade-Free Performance On-Board Battery Life Indicator Over 75+ 40V Tools – All Work With Any RYOBI 40V Battery Compatible with all RYOBI 40V Lithium tools and chargers, the 40V 4AH Lithium Battery is the perfect addition to your RYOBI 40V tool collection. It's lithium cells deliver fade-free performance from start to finish. The convenient on-board battery life indicator keeps you informed while you're out in the yard tackling your landscaping jobs. The 40V 4AH Lithium Battery's extra cell capacity is perfect for higher output tools like 40V mowers, blowers and chain saws. RYOBI 40V Lithium surrenders nothing but gas. Features: 40 Volt 4 Amp High Capacity Lithuim-Ion Battery Compatible with all RYOBI 40V Lithium tools Lithium-ion cells deliver fade-free performance On-board battery life indicator High capacity 4.0 Ah battery for extended run time Product Details: Number of Batteries: 1 A batteries required. Brand: RYOBI Battery Cell Composition: Lithium Ion Recommended Uses For Product: Power Tool Unit Count: 1 Count Product Dimensions: 6.5 x 4 x 3 inches Item Weight: 3.08 pounds Item model number: #OP4040A1 Batteries: 1 A batteries required. Is Discontinued By Manufacturer: No Date First Available: March 10, 2016 Manufacturer: Ryobi