Package Include: 1 x6.0Ah Replacement for Ryobi 40V Lithium Ion Battery Product Details: Battery Type: Li-ion Voltage: 40V Capacity: 6000mAh Condition: 100% Brand New w/ High Quality Replacement battery : OP4050 OP4026 OP4026A OP4050 Replacement Part #: OP4026 OP40261 OP4026A OP4050A OP4030 Compatible with Compatible with RYOBI 40 volt cordless power tools RY40200 RY40403 RY40204 Compatible with : RYOBI 40 volt cordless power tools RY40200 RY40403 RY40204 It can charge Ryobi's 40V outdoor product line. That includes their leaf blower, chain saw, edger, hedge trimmer, lawn mower, string trimmer, power head, pole saw, & hedge trimmer. You're bound to be using at least one of these tools at any point during the year, & that means you'll need reliable energy. This 40 Volt battery has the features any homeowner needs in a reliable product. It has an on board fuel gauge, letting you know how much of a charge is left w/ LED lighting. Its power doesn't fade over time, meaning that you can work w/ your tools on full power until the battery runs out. Perhaps most impressive is this battery's cold-weather performance. It can work in conditions as cold as -4 degrees Fahrenheit Couple these features w/ the speedy charge time, Ryobi's suite of powerful outdoor tools, & a long runtime, this is a product you'll wish you had three more of as soon as you get to using it.