Milwaukee 18V to DeWalt 20V Battery Adapter
291.00 kr
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Milwaukee 18V to DeWalt 20V Battery Adapter
291.00 kr
Taxes included.
kr 33.00 Shipping to SwedenZero customs fees. Zero surprise taxes.
This adapter lets you power DeWalt 20V MAX cordless tools with the Milwaukee M18 batteries you already own. The molded ABS housing keeps it light and hard-wearing, and pure copper contacts keep current delivery steady. It keeps one battery platform serving more tools, which costs less than buying into another.
See it in action
Specifications
- SKU
- PTA-MIL18-DWM20
- Fits this battery
- Milwaukee M18 (Lithium-Ion)
- Battery voltage
- 18V
- Runs these tools
- DeWalt 20V MAX (Lithium-Ion)
- Tool voltage
- 20V
- Housing
- ABS (Injected)
- Terminals
- Copper
- Current rating
- 40A continuous (80A peak at 18VDC for up to 2 seconds)
- Internal wiring
- 5 mm²
- Weight
- 132 g (4.7 oz / 0.29 lb)
- Colour
- Red, Yellow
- 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 deliveryMore details
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.
Milwaukee M18 and DeWalt 20V MAX compatibility
It works in one direction only: Milwaukee batteries powering DeWalt tools. For the opposite pairing, see adapters that run on DeWalt 20V MAX batteries.
Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Milwaukee M18 platform and that your tool takes DeWalt 20V MAX batteries.
Important charging and safety information
This adapter is for powering cordless tools and nothing else. It cannot charge Milwaukee or DeWalt 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 Milwaukee M18 battery.
How it works
-
1. Use the battery you own
Any compatible Milwaukee M18 battery you already have.
-
2. Slide on the adapter
It goes where the original DeWalt 20V MAX battery sits.
-
3. Click in and work
No tools, no wiring, no modifications.
Milwaukee M18 to DeWalt 20V MAX — Common Questions
Will this fit my other Milwaukee batteries?
Only Milwaukee M18 batteries. Milwaukee also sells Milwaukee M12, Milwaukee V18 Ni-Cd, and those use a different socket — same brand, different rail and contacts, so they need their own adapter. Compare the rail on your battery with the photos before ordering.
Will my DeWalt 20V MAX tool run as long on a Milwaukee M18 battery?
Runtime comes from the battery, not the adapter — a 5.0Ah Milwaukee M18 battery lasts roughly twice as long as a 2.5Ah one, exactly as it would on its own tool. The adapter’s copper terminals and heavy-gauge wiring are there to keep resistive loss low.
Could this damage my Milwaukee M18 battery or my DeWalt 20V MAX tool?
Used with undamaged, compatible equipment it is not expected to. Milwaukee M18 batteries are lithium-ion with a protection circuit built into the battery, and it keeps working through the adapter — it stays in the battery and never moves into the adapter. Stop when the tool slows noticeably rather than running the battery flat, and stop using the adapter if it becomes unusually hot or the contacts look damaged.
Can I charge through the adapter?
No, and it should never be attempted. The adapter carries power one way only, out to the DeWalt 20V MAX tool — there is no charging circuit inside it. Connecting it to a charger puts the battery, the charger and the adapter at risk. Always take the Milwaukee M18 battery off the adapter and charge it on its own charger.
Does it work with third-party Milwaukee batteries?
Usually. What matters is the socket, not the badge: if the battery slides on and locks the way an original does, the adapter takes it and the DeWalt 20V MAX tool runs. Aftermarket moulding does vary, so if yours looks unusual send us a photo and we will check before you order.
How much does it add to the DeWalt 20V MAX tool?
132 g (4.7 oz) and a short extension between battery and tool. You notice it overhead or in a tight cabinet; on a drill or driver held normally it disappears.