This battery adapter converts Makita 18V batteries for use with Ryobi 18V tools. Compatible with Ryobi One+ 18V tools including models P7131, P340, P208, P236, P601, P135, P515, P505, P731 and more. Allows Makita 18V lithium batteries such as BL1860B, BL1860, BL1850B, BL1850, BL1840, BL1830B, BL1830, BL1820, BL1815 to power Ryobi 18V One+ cordless tools. The MT20RNL adapter enables extended runtime on existing 18V tools with full functionality and compatibility. Built-in intelligent protection chips guard against over-charging, over-discharging, over-voltage, over-current, and short-circuit. Features fire-resistant ABS construction for enhanced safety. Specifications: Color: Green Material: ABS Type: Battery Converter Adapter Model: MT20RNL Rated Voltage: 18V Rated Current: 3A Compatible with Ryobi 18V cordless power tools Package Includes: 1 x MT20RNL Battery Adapter