Stanley V20 to Erbauer 18V EXT Battery Adapter

Use your Stanley V20 batteries on Erbauer 18V EXT cordless tools, without buying into a second battery platform. The molded ABS housing keeps it light and hard-wearing, and pure copper contacts keep current delivery steady. One battery platform across more tools means less spent on batteries and less to keep charged.

Specifications

• SKU PTA-STA20-ERB18
• Fits this battery Stanley V20 (Lithium-Ion)
• Battery voltage 20V
• Runs these tools Erbauer 18V EXT (Lithium-Ion) from Screwfix
• 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 95 g (3.4 oz / 0.21 lb)
• Dimensions (L × W × H) How It's Measured 110 × 67 × 48 mm (4.33 × 2.64 × 1.89 in)
• 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 June 10, 2026)

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.
• Covered by a 12-month warranty from the day it arrives.

Stanley V20 and Erbauer 18V EXT compatibility

It works in one direction only: Stanley batteries powering Erbauer tools. For the opposite pairing, see adapters that run on Erbauer 18V EXT batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Stanley V20 platform and that your tool takes Erbauer 18V EXT batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Stanley or Erbauer 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 Stanley V20 battery.