Lithium ion battery holds a charge up to 5 times longer than NiCd. Features longer runtime and improved performance. Easy-to-install and remove. Compatible with the 40V (volt) line of outdoor power equipment which includes string trimmer Model No. LST136 (SKU 701527), hedge trimmer Model No. LHT2436 (SKU 701528), sweeper vacuum Model No. LSW36, and other power equipment.