AEG 18V to Masterforce 20V Battery Adapter

Use your AEG 18V batteries on Masterforce 20V cordless tools, without buying into a second battery platform. Built with an injection-molded ABS battery interface, a 3D-printed ABS tool socket for a close fit, and pure copper contacts. It keeps one battery platform serving more tools, which costs less than buying into another.

Specifications

• SKU PTA-AEG18-MAS20
• Fits this battery AEG 18V (Lithium-Ion)
• Battery voltage 18V
• Runs these tools Masterforce 20V (Lithium-Ion) from Menards
• Tool voltage 20V
• 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 126 g (4.4 oz / 0.28 lb)
• Colour Black, Orange
• 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 June 19, 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.

AEG 18V and Masterforce 20V compatibility

It works in one direction only: AEG batteries powering Masterforce tools. For the opposite pairing, see adapters that run on Masterforce 20V batteries.

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

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge AEG or Masterforce 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 AEG 18V battery.