This battery adapter converts Makita 18V lithium 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 batteries such as BL1860B, BL1850B, BL1840, BL1830, BL1820, BL1815 to power Ryobi 18V cordless tools. The MT20RNL adapter enables extended runtime using lithium-ion batteries on existing 18V tools. Designed for compatibility with Ryobi ONE+ system cordless power tools. Built-in intelligent protection chips guard against over-charging, over-discharging, over-voltage, over-current, and short-circuit. Features fire-resistant ABS construction for added safety. Rated voltage: 18V. Rated current: 3A. Color: Green. Package includes 1 x MT20RNL battery adapter. Other items not included. Note: Lighting and display differences may cause slight color variations. Measurement may vary by +/- 1-3cm.