Ryobi OP242 24 Volt Lithium Battery for Edger and Hedge Trimmer 56WH 24-volt Ryobi Lithium Battery For use with Ryobi 24-volt cordless tools, including RYU2420, RY24201, RY24600A, RY4061 and RY24601 Back-up power for large jobs 1-hour quick charge Works with charger OP140A