ASUNT PD100W Milwaukee M18 USB-C Battery Charger Adapter

Charger: ASUNT’s PD100W Milwaukee M18 adapter is designed to charge compatible 18V batteries through USB-C or use a fitted battery as a power source for other devices. It also has USB-A output and an LED display, with an important limitation: battery charging and device output cannot happen at the same time.

At a glance

USB-C input and output are described as supporting PD charging, with a claimed maximum of 100W.
USB-A output is listed as 24W QC3.0.
LED display is described as showing battery level and charging status. The listing says calibration may be needed for an accurate battery reading.

Price

$33.99Save 15%

Reference price: ~~$39.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Provides USB-C input for charging a compatible Milwaukee M18 battery and output for charging other devices.
USB-A and USB-C outputs offer two connector options for devices such as phones and headphones.
The LED display is intended to show battery and charging status.

Cons

The adapter cannot charge a battery and power an output device at the same time.
The stated battery charging limit excludes batteries below 18V.

Technical specifications

2 specifications

Identity
Brand	ASUNT

Dimensions and installation
Dimensions listed	6D x 5W x 4H centimetres

What to know before buying

Compatibility is claimed for Milwaukee M18 18V batteries, including listed 48-11-series models. The listing says it does not fit batteries from other brands. It also says the battery must be discharged to calibrate the LED display, and that the adapter cannot input and output simultaneously or charge batteries below 18V.

Who is it for?

A good fit for

Milwaukee M18 battery owners wanting USB-C charging and device power from a compatible battery.
Buyers seeking USB-A and USB-C ports for charging small electronics.

Less suited to

Owners of batteries from other brands or batteries below 18V.
Anyone needing simultaneous battery charging and device output.

ASUNT PD100W Milwaukee M18 USB-C Battery Charger Adapter · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 1 ratings

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The supplied rating evidence shows a five-star aggregate from a single rating, which is too limited to establish a broader customer pattern. No written customer feedback is provided, so it does not indicate how the adapter performs in use.

Frequently asked questions

Which batteries does this adapter fit?

The listing claims compatibility with Milwaukee M18 18V batteries and names several 48-11-series models. It says batteries from other brands are not compatible.

Can it charge a battery and a phone at the same time?

No. The listing states that USB-C input and output cannot be used simultaneously.

What outputs are listed?

The adapter is described with USB-C output and a USB-A output rated at 24W QC3.0.

Can it charge a battery below 18V?

The listing says it can charge only 18V batteries and warns against charging a battery below 18V.