Masterforce 20V to Black and Decker 20V Battery Adapter

Use your Masterforce 20V batteries on Black and Decker 20V cordless tools, without buying into a second battery platform. Voltage is not the obstacle here — both sides are 20V. The socket is, and that is what this solves. Injection-molded ABS on the battery side, precision 3D-printed ABS on the tool side, and pure copper contacts for steady current delivery. It is a cost-effective way to get more from the batteries you have, with no second charger to maintain.

Specifications

• SKU PTA-MAS20-BLA20
• Fits this battery Masterforce 20V (Lithium-Ion) from Menards
• Battery voltage 20V
• Runs these tools Black and Decker 20V (Lithium-Ion)
• 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 135 g (4.8 oz / 0.3 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 May 21, 2026)

Why choose this adapter

• Your Masterforce 20V battery and Black and Decker 20V 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.
• Made for the Masterforce 20V batteries sold at Menards, so the fit is the one you already own.
• Covered by a 12-month warranty from the day it arrives.

Masterforce 20V and Black and Decker 20V compatibility

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

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

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Masterforce or Black and Decker 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 Masterforce 20V battery.