Craftsman 20V to RIDGID RED 18V Battery Adapter

Use your Craftsman 20V batteries on RIDGID 18V RED cordless tools, without buying into a second battery platform. The 3D-printed ABS housing keeps the fit precise, and pure copper contacts keep current delivery steady. A practical way to extend the value of the Craftsman 20V batteries you already have.

Specifications

• SKU PTA-CRA20-RED18
• Fits this battery Craftsman 20V (Lithium-Ion)
• Battery voltage 20V
• Runs these tools RIDGID 18V RED (Lithium-Ion) from Home Depot
• Tool voltage 18V
• Housing ABS (3D)
• 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 119 g (4.2 oz / 0.26 lb)
• Colour Black
• 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 October 12, 2025)

Why choose this adapter

• 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.

Craftsman 20V and RIDGID 18V RED compatibility

It works in one direction only: Craftsman batteries powering RIDGID tools. For the opposite pairing, see adapters that run on RIDGID 18V RED batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Craftsman 20V platform and that your tool takes RIDGID 18V RED batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Craftsman or RIDGID 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 Craftsman 20V battery.

Before you buy