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Gnu Shoes
Reviewed in the United States on March 4, 2025
The PowMr POW-M45-PRO Solar Charge Controller has many features. It auto-detects the battery voltage when setting it up. The display is big, colorful, and monitors and reports the essential points of your solar charging system. There are many options to easily change parameters within your system components so it performs well. The sturdy, robust case is very nice looking and the instruction manual is easy to read. Being an MPPT controller gives the owner an advantage over PWM controllers as it is much more efficient in charging. There are many built-in protections including: Solar panel short-circuit, Solar panel over-current, Load over-current, Solar panel reverse polarity protection, Battery reverse polarity protection, and controller overheat protection. These safety features make setup and operation easy. You can even set user defined parameters for the controller for those systems that may be wired non-conventionally. This controller is a workhorse! On a scale of ONE to TEN... PowMr is an ELEVEN! Highly recommended!
James C Hamilton
Reviewed in the United States on March 29, 2025
improved mt system greatly
Erica Toney
Reviewed in the United States on February 5, 2025
This is my first time building a solar system. This solar charge controller is amazing. But the instructions are very hard to read. Once you figure out how to program it, It works wonders. I have love it so much I bought 2.
Robert Hart
Reviewed in the United States on January 21, 2025
So far works as advertised. Easy to use. I do recommend getting the model without cables. Just easier for wire management.
Customer
Reviewed in Canada on April 11, 2025
For the past 7 months, I've used this 60A MPPT controller with three 330W panels in series, charging a DCPOWER 52.6Volt, 2.5kWh Lithium Iron Phosphate battery. It works fine until the battery gets full (at 58.4V). My model does stop passing current from the solar panels at this point, but not before it sends a surge current to the battery. This has the effect that it permanently damages any sensitive loads. In my case, it cooked two PoE ethernet switches operating on 50V, and a 50V to 12V DC-DC buck converter. It also blew all the fuses I had thought would prevent the damage. It happened to me twice before I determined the MPPT controller was to blame. Luckily the 12V modem and router behind the damaged DC-DC buck converter were still operable. There are youtube videos identifying this problem, which only happens once the battery gets full. In my case, that only happened twice in 7 months, but do yourself a favour and don't buy this timebomb.
Stephen foster
Reviewed in Canada on September 4, 2024
Would buy again 100% mint
Tammy
Reviewed in Canada on September 19, 2024
It has lots of display and easy to set upWhen I receive my 4 g wire, I will be running 60 am with it. A good start to o running my house.
corey galway
Reviewed in Canada on September 11, 2024
I have always used another companies controllers but I took a chance on this one because the price was less then half and I am glad I did. It is very simple to setup, use, and understand. It works excellent.
Bernie M.
Reviewed in Canada on August 26, 2024
Super easy to install, turned on as soon as I connected the batteries to it. I love the large display on it too.
Reviewed in Canada
Reviewed in Canada on August 24, 2024
--- The Good ---Detected the panel voltage, and directed it's wattage to chargingDisplayed the battery's output voltage (charge level)--- The Bad ---No complaints--- Bottom Line ---I only have a single 24V-220W panel I bought 10 years ago to test with. It has degraded down to 170W. Given all the complaints, it's important for me to note that this may very well have problems under high load.It's overkill and over priced for a single panel (I've been using a $30 charge controller I bought 10 years ago that only works with SLA), and the 5 star reviews aren't what I'd call credible.I have no complaints using it for the single panel, but I can't speak to using it for a full roof. Thankfully, it's returnable and swapping the charge controller is extremely quick (assuming you have appropriate disconnects, not shown in the diagram for this controller; if you're trying to DIY I recommend reading some of the solar textbooks by Global Sustainable Energy Solutions, or even taking their course).
Macmanhfx
Reviewed in Canada on August 20, 2024
Initially tested using 12v using lifepo batteries and was disappointed. Charged them fine but once topped up, unit would not enter float mode and cycle between overvoltage warning and charging no matter the settings I used. Plus the included temp sensor/connector or maybe it’s the internals but regardless, displayed temperature was never accurate sometimes over by 15-20 degrees C. Never reached out for tech support so I don’t now how that is since it’s within the 30 day return period and is going back. Was hoping for a budget find but this one’s not it unfortunately.***update*** sent back and ordered “updated” version. Can’t parallel this one but not an issue for my application. No battery temp port or sensor either. Included battery cables are too short and should come with just connectors to make your own. This one seems to charge lifepo4’s without issue so far.****last update*** After more testing, this one is going back too. Overvoltages lifepo4 batteries to the point that it cuts off current flow with error 63 no matter what user settings are used. Does not provide any bulk charge when loads are connect to battery. My cheap PWM controller will run stuff from the panels and charge the battery at the same time so this one’s is definitely a dud. Load terminals says rated for 8amps but cuts off power at 5. Very poor quality and performance as far as I’m concerned. This one is going back as well
John Alton
Reviewed in Canada on March 27, 2024
I'm keeping the controller, but not because it is what I thought I was buying. I was trying to replace a 40 AMP 12 Volt charge controller which could handle 100 V. My array in series was nominally less than 100 volts, but exceeded this slightly at max production. So I shopped for a replacement, I thought this was it, 160 Volts, great, and great price point. But, that was for a battery bank above 12 Volts, this controller in a 12 volt battery setup cannot handle even the 100 volt array my original controller does. So, my work-around is to break my array up and use two controllers. Learning curves, love em, hate em.
Luis Carbonell
Reviewed in the United States on December 10, 2024
Used to 12V panels, the use of a 36 volt high power pane changed everything. Only mystery I found is that when you have more panels for low sun conditions, the controller may trip on overcurrent at full sunlight instead of limiting. Really unexpected, but great for the price.
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