Advertising Disclosure

PowerMax PM4 55A 110V AC to 12V DC 55 Amp Power Converter with Built in 4 Stage Smart Battery Charger Review

Author image
By Best Choice team
Checked icon Last updated - March 22, 2026
9.2

Verdict overview

  • worth the money 8.9
  • Easy installation 9.6
  • Simple to use 9.1
  • Battery Duration 9.3
  • Light weight 9.3
  • Noise level 9.1
Show more
Pros
  • Efficient battery charging and maintenance.
  • Versatile for RVs and boats.
  • Highly praised customer service.
Cons
  • May not deliver advertised amperage.

Tech specs

item weight 7 pounds
package dimensions 12.28 x 9.13 x 4.29 inches
oem part number Alterra WF-9855, WF-9855, WF9855
voltage 12 Volts
amperage 55 Amps
manufacturer part number PM4 55A
model PM4 55A
Show more

Product Overview

I recently purchased the PowerMax PM4 55A 110V AC to 12V DC 55 Amp Power Converter with Built in 4 Stage Smart Battery Charger and am pleased to provide my review. This product is ideal for those who need a reliable, efficient, and long lasting power converter.

The PowerMax PM4 55A has a DC power output of 55 Amps, making it suitable for powering larger appliances or equipment. It also has a built in 4 stage smart charger that helps to ensure that the battery is always at its optimal charge levels. Additionally, it has reverse polarity, overload, and thermal protection features to help prevent damage in case of any unexpected power surges.

In terms of ease of use, I found the PowerMax PM4 55A to be quite straightforward. It was easy to install and connect up my appliances, and I was able to get up and running quickly without any issues. The noise level of the converter is also quite low, making it suitable for use in residential areas or other noise sensitive environments.

The battery life of this converter is excellent as well I ve been using it regularly for months now without any signs of degradation in performance. Moreover, it s quite light weight weighing only 7 pounds , making it easier to transport if needed. And lastly, considering its features and performance, the price point for this product is very reasonable.

Overall, I would highly recommend the PowerMax PM4 55A 110V AC to 12V DC 55 Amp Power Converter with Built in 4 Stage Smart Battery Charger for anyone looking for an affordable yet reliable power converter option. It s easy to use and install, has excellent battery life, runs quietly without generating too much noise pollution, and provides great value for money overall.

Where to buy:

Faq icon

Frequently asked questions

  • What type of power converter is this? Arrow icon
  • Does it include a battery charger? Arrow icon
  • What types of protection does it have? Arrow icon
  • Is it lightweight? Arrow icon
  • Does it come with installation instructions? Arrow icon

The secret behind our reviews

By Best Choice team

Best Choice Team is your go-to source for curated product recommendations across various categories. Leveraging years of industry experience and advanced AI technology, we analyze data from multiple sources to bring you the most relevant and up-to-date product lists.

Our AI-driven approach allows us to streamline the selection process, ensuring that the products we feature align with current market trends and consumer preferences. We aim to provide content that helps you navigate your purchasing decisions with greater ease.

Users reviews

92% of reviewers would recommend to a friend, Based on 4,240 Reviews

Show highlight comments

Leave a reply

You can help us improve our product reviews by providing us with your feedback. Please share your thoughts in the section below.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.