General description vhbw offers a high-quality, compatible battery designed for use with various Ryobi power tools, including the 40V Backpack Blower, 40V 500 CFM Jet Fan, and other lithium brushless tools. This battery is an excellent choice as a second battery, ensuring you have the power you need for your projects. Technical specifications Battery type: Li-Ion Capacity: 4000 mAh Voltage: 36 V Energy: 144 Wh Colour: black Compatibility and accessories Compatible with Ryobi 40V Backpack Blower Compatible with Ryobi 40V 500 CFM Jet Fan Compatible with Ryobi 40V Lithium Brushless Power Tools Replacement for Ryobi part numbers: 5133002166, BPL3626, BPL3626D, BPL3640, BPL3640D, BPL3650, BPL3650D, OP4015, OP40201, OP4026, OP40261, OP4026A, OP4030, OP40301, OP4040, OP40401, OP4040A, OP4050, OP40501, OP4050A, OP40601, OP40602