【Product Specification】Battery capacity: 6000mAh, Voltage: 40Volt, Battery type: Li-ion. 【High Compatibility】These 40V replacement batteries are precision-engineered for your tools and fully compatible with the following top tool models: OP4020, OP4040, OP4050, OP4060, RY40290, RY40640, RY40580, RY40710, and HYPER chargers: OP4010, OP409, OP40BPAVNM, OP406A, OP407A, OP403A, etc. 【Long-lasting Capacity】Our 6000mAh lithium-ion cell delivers long-lasting energy density to power through demanding tasks like lawn mowing and heavy-duty cutting, while maintaining stable voltage output for consistent tool performance. 【Safe & Reliable】Obtaining relevant CE/FCC/RoHS electronic certification. Using an intelligent protection system and high-quality battery cells with LED indicator lights, preventing short circuits, overcharging, discharging, and high-temperature protection of the battery. 【Great After Sale Service】If you have any question about this product, please feel free to contact us. Your satisfaction is our priority, and we remain committed to improving both our products and services. Replacement for Ryobi 40v Cordless Power Tools Battery