DeWalt 20V to RIDGID RED 18V Battery Adapter

Use your DeWalt 20V MAX batteries on RIDGID 18V RED cordless tools, without buying into a second battery platform. Constructed from durable molded ABS with pure copper contacts, for a secure fit and dependable current transfer. It keeps one battery platform serving more tools, which costs less than buying into another.

Specifications

• SKU PTA-DWM20-RED18
• Fits this battery DeWalt 20V MAX (Lithium-Ion)
• Battery voltage 20V
• Runs these tools RIDGID 18V RED (Lithium-Ion) from Home Depot
• Tool voltage 18V
• Housing ABS (Injected)
• 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 88 g (3.1 oz / 0.19 lb)
• Dimensions (L × W × H) How It's Measured 110 × 70 × 44 mm (4.33 × 2.76 × 1.73 in)
• Colour Black
• Operating humidity 5–95% RH
• Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
• USB port Yes
• 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

• Injection-moulded ABS, not 3D printed — no layer lines to split under load.
• 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.
• A USB port on the adapter, so the same battery charges a phone on site.
• Covered by a 12-month warranty from the day it arrives.

DeWalt 20V MAX and RIDGID 18V RED compatibility

It works in one direction only: DeWalt 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 DeWalt 20V MAX 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 DeWalt 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 DeWalt 20V MAX battery.

Before you buy