TOBAIL Cordless Tools Range they all take the same battery, works on both 18V or 21V, compatible with LXT range, use your current or easy to find on amazon (compatible with BL1850 BL1860B BL1855 BL1840 BL1830 LXT-400 BL1820B BL1815) No-load speed: 0-3000SPM, Max. cutting depth: 100mm, Cutting stroke: 15mm Lightweight one-handed design Specially designed for wood cutting, branches pruning and gardening Bare unit in box without battery or charger Features: High power. Electric brake. Variable speed. Tool-less blade change. Ergonomically designed handle. Trigger switch with lock-off lever. Newly designed crank mechanism for higher efficiency. Note:NOT included Batteries and charger Note: This cordless tool is a replaceable body, compatible with BL1850 BL1860B BL1855 BL1840 BL1830 LXT-400 BL1820B . Please understand. Specifications: No Load speed: 0-3000rpm/min Stroke Length: 15mm Cutting Depth In The Metal: 2mm Cutting Depth In Wood: 100mm Cutting Depth In Plastic: 100mm Saw Blade Specifications: Material:High-speed Steel Package Included: 1 x Reciprocating Saw (Battery not included)