The Ryobi BPL-1820 18V 2.4Ah Lithium+ Battery is a high-quality replacement battery for Ryobi tools that utilise lithium-ion technology. With a capacity of 2.4Ah and a voltage of 18V, this battery offers long-lasting power for your tools, ensuring that you can work efficiently without the need for frequent recharging. The BPL-1820 model is specifically designed for use with Ryobi tools, making it a reliable and compatible choice for your power tool needs.