This cordless 10” string trimmer from Earthwise has a 24V 2.5Ah lithium-ion battery that delivers 8800 RPMs of power to the high-efficiency motor for superior run time and durability. The trimmer delivers 10” cutting width with auto feed, .065” Nylon line, a flip-down guard for quick and easy edging and an adjustable handle and telescopic pole that allows user to adjust the length of the shaft for comfortable trimming.