Ryobi 18V to Chicago Electric 18V Battery Adapter

Use your Ryobi 18V ONE+ batteries on Chicago Electric 18V cordless tools, without buying into a second battery platform. Both run at 18V, so the adapter changes the fitting and not the voltage. Injection-molded ABS on the battery side, precision 3D-printed ABS on the tool side, and pure copper contacts for steady current delivery. This helps you get the most out of your existing battery system while avoiding the cost of another set of batteries and chargers.

Specifications

• SKU PTA-RYO18-CHI18
• Fits this battery Ryobi 18V ONE+ (Lithium-Ion)
• Battery voltage 18V
• Runs these tools Chicago Electric 18V (Lithium-Ion) from Harbor Freight
• Tool voltage 18V
• Housing ABS
• Terminals Copper
• Current rating 40A continuous (80A peak at 18VDC for up to 2 seconds)720 Watt continuous at 18V nominal
• Internal wiring 5 mm²
• Weight 157 g (5.5 oz / 0.35 lb)
• Colour Black, Green
• Operating humidity 5–95% RH
• Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
• USB port No
• What's in the box Battery adapter
• Warranty 12 months after the date of delivery
• Revision Revision 01 (released on August 17, 2025)

Why choose this adapter

• Your Ryobi 18V ONE+ battery and Chicago Electric 18V tools run at the same voltage, so the adapter changes the fitting rather than converting anything.
• Solid copper terminals, so less of the current is lost as heat.
• 5 mm² internal wiring, rated for 40A continuous with 80A peak at 18VDC for up to 2 seconds, so a high-draw tool is not held back by the adapter.
• Covered by a 12-month warranty from the day it arrives.

Ryobi 18V ONE+ and Chicago Electric 18V compatibility

It works in one direction only: Ryobi batteries powering Chicago Electric tools. For the opposite pairing, see adapters that run on Chicago Electric 18V batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Ryobi 18V ONE+ platform and that your tool takes Chicago Electric 18V batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Ryobi or Chicago Electric batteries and must never be connected to a charger of any kind. Always take the battery out of the adapter before charging, and charge it on the original charger made for your Ryobi 18V ONE+ battery.