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Milwaukee M18 Top-Off 175-Watt Power Inverter Review

Milwaukee M18 Top-Off 175-Watt Power Inverter Review

When it comes to power inverters that are both portable and efficient, the Milwaukee M18 Top-Off 175-Watt Power Inverter stands out. The device comes packed with features, such as USB and USB-C ports, a rafter hook, and even an internal fan to keep the unit cool. In this review, we’ll delve deep into its key features, test its performance, and explore the different scenarios where it could come in handy.

Key Features and Specifications

One of the first things that caught my eye was the inverter’s shape and design. It’s crafted in such a way that it’s incredibly easy to carry around, making it ideal for both job sites and personal use like camping. The rafter hook is another nice touch, allowing users to hang the inverter just about anywhere as long as it doesn’t block the vent.

The unit comes with 175 watts of power, which may seem limiting but is sufficient for charging multiple devices or running smaller electronics. For instance, it won’t power your coffee maker, but it’s enough to run an oscillating fan.

Charging Capabilities: USB and USBC Ports

The device features USB and USB-C charging ports, allowing for quicker and more efficient charging. These ports can be activated with a simple push of a button and can run simultaneously with the AC power. This is a significant advantage for those who require multiple devices to be powered at the same time.

Performance and Testing

I began by testing the voltage and hertz using a Fluke charger. The inverter delivered a stable 119V and 61.12Hz, showing no major fluctuations when a battery was plugged into the charger. This indicates that the unit provides clean and stable power, which is crucial for sensitive electronics like laptops and TVs.

During the test, I also noted the efficiency of the internal fan, which operates quietly to keep the unit cool. This is particularly important as an overheated unit can impact its performance and longevity. Additionally, the inverter has warning lights to indicate temperature and other issues.

Versatility and Use Cases

This inverter can be useful in various settings:

  • Job Sites: The portability and rafter hook make it easy to carry around on job sites. It can power smaller electronics and keep your gadgets charged.
  • Camping: Due to its compact size and efficiency, it is ideal for camping trips where electricity is not readily available.
  • Home Use: I even tested it on my Christmas tree and found that it ran for an hour and a half on a 5 amp-hour battery.


The Milwaukee M18 Top-Off 175-Watt Power Inverter is undoubtedly a well-thought-out product with a multitude of useful features. While it may not be the cheapest option on the market, at $99, it provides value for the money due to its versatility, efficiency, and quality. Whether you’re on a job site, camping, or simply at home, this inverter is a reliable choice for your power needs.

Frequently Asked Questions

  1. Can the Milwaukee M18 Top-Off 175-Watt Power Inverter run heavy-duty appliances?

No, it can’t run appliances that require more than 175 watts of power, like coffee makers or sump pumps.

  1. How long will the inverter run on a 5 amp-hour battery?

It can run a Christmas tree for an hour and a half on a 5 amp-hour battery.

  1. Does it have any safety features?

Yes, it comes with an internal fan and warning lights to indicate temperature and other issues.

  1. Can it charge multiple devices simultaneously?

Yes, the USB and USB-C ports can be used simultaneously, and they can also operate at the same time as the AC power.

  1. Is it suitable for outdoor use like camping?

Yes, its compact design and efficiency make it ideal for outdoor activities like camping.

For more information on portable power solutions, check out Portable Power Central.

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5/5 - (43 votes)