Milwaukee 18V to Bosch (Green) 18V Battery Adapter
£23.00
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Milwaukee 18V to Bosch (Green) 18V Battery Adapter
£23.00
Taxes included.
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Use your Milwaukee M18 batteries on Bosch 18V PBA (Green) cordless tools, without buying into a second battery platform. Voltage is not the obstacle here — both sides are 18V. The socket is, and that is what this solves. Built with a durable injection-molded ABS housing and pure copper contacts for steady current delivery. Your existing batteries do more work, and there is no second ecosystem to buy into.
Specifications
- SKU
- PTA-MIL18-BOSG18
- Fits this battery
- Milwaukee M18 (Lithium-Ion)
- Battery voltage
- 18V
- Runs these tools
- Bosch 18V PBA (Green) (Lithium-Ion)
- Tool voltage
- 18V
- Housing
- ABS (Injected)
- Terminals
- Copper
- Current rating
- 40A continuous (80A peak at 18VDC for up to 2 seconds)
- Internal wiring
- 5 mm²
- Weight
- 128 g (4.5 oz / 0.28 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 deliveryMore details
Why choose this adapter
- Your Milwaukee M18 battery and Bosch 18V PBA (Green) tools run at the same voltage, so the adapter changes the fitting rather than converting anything.
- 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 Bosch 18V PBA (Green) compatibility
It works in one direction only: Milwaukee batteries powering Bosch tools. For the opposite pairing, see adapters that run on Bosch 18V PBA (Green) 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 Bosch 18V PBA (Green) batteries.
Important charging and safety information
This adapter is for powering cordless tools and nothing else. It cannot charge Milwaukee or Bosch 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 Bosch 18V PBA (Green) battery sits.
-
3. Click in and work
No tools, no wiring, no modifications.
Milwaukee M18 to Bosch 18V PBA (Green) — 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 Bosch 18V PBA (Green) 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 Bosch 18V PBA (Green) 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 Bosch 18V PBA (Green) 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 Bosch 18V PBA (Green) 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 Bosch 18V PBA (Green) tool?
128 g (4.5 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.