Ridgid 18V to Milwaukee 12V Battery Adapter
€29,95
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Ridgid 18V to Milwaukee 12V Battery Adapter
€29,95
Taxes included.
Free Shipping to Germany & UK. Other European countries around €3 (local currency applied)Zero customs fees. Zero surprise taxes.
Safety feature
Built-in BMS Protection
Integrated Battery Management System (BMS) helps prevent battery over-discharge and improves safety.
Use your RIDGID 18V batteries on Milwaukee M12 cordless tools, without buying into a second battery platform. 18V in, 12V out: the converter brings it down to what a fully charged 12V battery reads, rather than passing the higher voltage through. Constructed from durable molded ABS with pure copper contacts, for a secure fit and dependable current transfer. Your existing batteries do more work, and there is no second ecosystem to buy into. It also carries battery protection electronics (BMS) inside.
Specifications
- SKU
- PTA-RID18-MIL12
- Fits this battery
- RIDGID 18V (Lithium-Ion)from Home Depot
- Battery voltage
- 18V
- Runs these tools
- Milwaukee M12 (Lithium-Ion)
- Tool voltage
- 12V
- Housing
- ABS (Injected)
- Terminals
- Copper
- Current rating
- 40A continuous (80A peak at 18VDC for up to 2 seconds)432 Watt continuous at 10.8V nominal
- Weight
- 143 g (5.0 oz / 0.32 lb)
- Colour
- Black, Red
- Operating humidity
- 5–95% RH
- Operating temperature
- -10 °C to 50 °C (14 °F to 122 °F)
- USB port
- No
- Built-in BMS protection
- Yes
- What's in the box
- Battery Adapter
- Warranty
- 12 months after the date of deliveryMore details
- Revision
- Revision 01 (released on January 7, 2024)
Why choose this adapter
- A Battery Management System inside the adapter cuts power before the battery is drained too far — protection your battery may not have on its own.
- 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.
- 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 RIDGID 18V batteries sold at Home Depot, so the fit is the one you already own.
- Covered by a 12-month warranty from the day it arrives.
RIDGID 18V and Milwaukee M12 compatibility
It works in one direction only: RIDGID batteries powering Milwaukee tools. For the opposite pairing, see adapters that run on Milwaukee M12 batteries.
Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the RIDGID 18V platform and that your tool takes Milwaukee M12 batteries.
Important charging and safety information
This adapter is for powering cordless tools and nothing else. It cannot charge RIDGID or Milwaukee 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 RIDGID 18V battery.
How it works
-
1. Use the battery you own
Any compatible RIDGID 18V battery you already have.
-
2. Slide on the adapter
It goes where the original Milwaukee M12 battery sits.
-
3. Click in and work
No tools, no wiring, no modifications.
RIDGID 18V to Milwaukee M12 — Common Questions
Will this fit my other RIDGID batteries?
Only RIDGID 18V batteries. RIDGID also sells RIDGID 18V RED, 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 Milwaukee M12 tool run as long on a RIDGID 18V battery?
Runtime comes from the battery, not the adapter — a 5.0Ah RIDGID 18V 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 RIDGID 18V battery or my Milwaukee M12 tool?
Used with undamaged, compatible equipment it is not expected to. This adapter has its own Battery Management System, which cuts power before the battery is drained too far, so it protects the battery even where the battery has no protection of its own. Stop using it if the adapter becomes unusually hot, the contacts look damaged, or the tool behaves oddly.
Can I charge through the adapter?
No, and it should never be attempted. The adapter carries power one way only, out to the Milwaukee M12 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 RIDGID 18V battery off the adapter and charge it on its own charger.
My RIDGID 18V gear came from Home Depot. Is that the same platform?
Yes — Home Depot is where RIDGID 18V is sold, so a battery or tool bought there is the platform this adapter is built for. What matters is the socket, and Home Depot stock is the reference for it.
Does it work with third-party RIDGID 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 Milwaukee M12 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 Milwaukee M12 tool?
143 g (5.0 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.