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 with lithium-ion performance on existing 18V tools. Built-in intelligent protection chips guard against over-charging, over-discharging, over-voltage, over-current, and short-circuit. Features fire-resistant construction for added safety. Color: Green. Material: ABS. Type: Battery Converter Adapter. Model: MT20RNL. Rated Voltage: 18V. Rated Current: 3A. Designed for use with Ryobi 18V cordless power tools. Package includes: 1 x MT20RNL Battery Adapter.