Compatible with One+ 18V tools Series P7131, P340, P208, P236, P601, P135, P515, P505, P731, etc. Converts 20V or 18V battery to replace P104, P105, P102, P103, P107, P108 batteries. Compatible with 18V/20V and 18V Lithium-ion Battery models DCB206, DCB201, 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, etc. Quickly converts 20V/18V battery to work with 18V tools. Built-in 5V 2.1A (Max) USB charging function. Can be used to charge mobile devices when power is low. Note: This adapter is not designed to fit into any chargers. The battery adapter features built-in intelligent protection chips to guard against over-charging, over-discharging, over-voltage, over-current, and short-circuit conditions. Product Benefits: This adapter allows compatible lithium batteries to be used with 18V lithium cordless power tools, providing extended run-time benefits on existing tools. Simple and convenient design. If not in use for an extended period, please remove from the battery. This converter does not support charging the battery. WARNING: 1. Ensure the battery is fully inserted for proper operation. 2. Do not force the battery pack into the tool; incorrect installation may cause damage. 3. This product is compatible with tools only, not with chargers. Do not attempt to charge the battery using this adapter. Material: ABS Color: Green Package Contents: 1 x DM18RL Battery Adapter (Adapter only, battery not included) Only the items listed are included; other accessories are not part of this package. Note: Lighting effects and monitor settings may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3 cm.