The Mantis 58V cordless battery-powered string trimmer delivers gas-like power to get weed whacking and edging jobs done fast. Trim continuously with the auto-feed line advance. Converts from trimmer to edger in seconds. Lightweight, powerful and comfortable to use. Battery charge indicator displays how much power you have left at all times. 58V lithium-ion battery is compatible with all Mantis cordless garden and yard card tools.