Writing this after awhile using it. Burned my way through two other controllers with this array until I got this EPEver. Good product. Right now, it's handling a 340w, 12v parallel array with no issues and running a freezer full time. Will be upgrading to 680w in a 24v series hookup and plan to use this same controller to keep my 12v batteries charged.

Bought this on Jan 24 2020, and it worked great until i hooked up too many panels in series today (119vDC). Note: there absolutely no PV input protections on this, so be careful when connections and do your math on max volts/amps. I had it connected to a Raspberry PI using the modbus data port, which sent the data into MySQL then displayed it using Grafana. Worked really well, totally bummed when the magic smoke was released. RIP.

My 25 year old Xantrex 40 amp charge controller died. I needed a replacement to keep one of my solar panel set working. I bought EPEVER 40A MPPT Solar Charge Controller 12V 24V Auto, for all of the features it has. Installation was easy, it excepted my #8 solar wires no problem. The remote readout has plenty of cord to place in a highly visible area. Programing was a little tough it took me a while to fully understand the instructions. The factory settings worked just fine initially but i wanted to fine tune the Controller for my batteries. I like the remote, it shows panel voltage and amps and the MPPT output to my batteries, the panel amps are boosted with MPPT. which is always visible on the Controller's remote. My panels are 25 year old as well, so they are not the highest efficiency panels, this controller maximizes my panel's output. The temperature sensor is great to have and easy to install. I'll wait a month or two, but may replace my other controller if the EPEVER 40A MPPT Solar Charge Controller continues to function properly.

I gave it 5 stars because how easy it was to install and it’s user friendly. The only thing I couldn’t use was the cord for the remote. It was to short but cat5 cable is cheap to get.

Very happy so far! The remote meter is great, Cat 5 cable I used was a longer one I had on hand to reach the mounting location in our motor home. I am using four 12 volt panels, in series parallel . unit runs very cool.

I would give this controller a 5 star review but can't thanks to the software that you have to download if you want to use it.The controller itself seem pretty decent. I've only been up and running with these for a few days. I'm upgrading from PWM to MPPT. I have these set up in parallel to each other. The panels are set up in series for 24 volt and the batteries are 12 volt. There's 2 panels in series (x2) to two controllers (530 watts to each controller) and 4 panels, (2 in series, 2 in series) in parallel (920 watts per controller) to the controller. The controllers don't seem to be even getting warm with this setup. The 2 controllers with 2 panels receive different amounts of sunlight at different times of the day and are far apart. It's not practical or wise to connect them to the same controller so I used 2 controllers. The battery bank consists of 10, 6 volt Trojan L16E wired for 12 volts. I'm currently charging at this moment at about 70 amps. Yesterday the charge current dropped slowly until it was just above the amperage being used by the house. I believe that's the way it's supposed to work and I was happy with that. I will be adding 8 more panels at 300 watts each and will be buying the higher amperage version of this controller for those.Now the blah stuff.. They could have given you more options on the cellular apps. There is a limited amount of stuff you can do with the apps, but there could be more. I wouldn't complain at all about the download software if the app was more versatile. On the remote controller there is still just a limited amount of stuff you can do. The manual says you can change the battery AH with the remote box but I couldn't do it and you cant with the app either.Now the bad. The software. I downloaded all three software's that are shown, spp v1, spp v2 and the pc tools. None of them would connect. In the installation instructions there is a walk through of setting up the software. I followed it to a 'T' and no go. I tried for an hour. Suddenly, for no reason, it connected. I sat up the first controller. and everything was good. I sat the software up for the second controller, and it wouldn't connect. I sat up the unit ID and everything per the instructions. I tried different cables and different laptops, no joy. Finally, for no apparent reason, it connected. I sat up the second controller. The third controller went the same way, wouldn't connect then for no reason it connects. The 4th controller was the same, then for no reason it connected. At that point, I was able to go from controller to controller and check stuff and tweak stuff... There's a lot you can do with the software WHEN IT WORKS. Soooooo…. This morning I get up and hook up the laptop and can't connect to anything. Tried for an hour and gave up. I'm a former IT guy with a national cable company. and I'll have to say, they need to start over on the software.So, conclusion, if you want a good controller this one, for the price, isn't bad. If you're buying it to se with software, look else ware. I hate to give bad reviews, If I figure out the software I'll amend this one. With todays technology it would seem wise to have a system that would allow the controllers to talk to each other to share settings and status. That would be a great system. Enough for now.As promised I'm editing the review. I'll raise the stars by one....I purchased a 60 amp version of this controller to finish off my install.. I also purchased a Windows 7 based laptop off E-Bay. The EPSolar software works perfectly on the windows 7 based laptop. I could not get a consistent connection with Windows 10 unless I deleted all the previous controllers from the software and start over. Even then it was iffy at best. I've repeatedly connected and disconnected with the windows 7 laptop with no issues. I would like to see the future versions of the Android and IOS app give more options and allow more editing of the controller setup.Overall, I like the controllers. I'm running 4x 40 amp and one 60 amp on a 4.7KW system with no issues. My batteries are completely charged before noon and a cloudless day and then the controllers slack off and just give the power needed to run stuff. Pretty nice really....

Shipping was really quick considering I'm in a Remote area. Product was packaged very well and was super easy to hook up took me about an hour to put my whole system together. Quality is very good nice well built units.

I have had the charge controller running for almost two months now. I am impressed on the quality, appears to be built solid. The tracking is accurate and if it was not for the snow right now i would be converting some nice energy.

I now own 3 Tracer MPPT charge controllers. EPEVER sells these units. These are quiet, efficient and a quality product. My first Tracer is fed by (2) 100 watt panels charging a bank of 4 6v golf cart batteries. The unit is set to turn on and off the load at sunset and sunrise. Second Tracer is powered by (3) 100 watt panels charges a 24v bank of golf cart batteries which power an 110vac inverter in my shed. The third charges 2 golf cart batteries in my travel trailer powered by (3) 100 watt panels. All the units are wired in series so voltage is high and current is relative low. They all work flawlessly and have had no failures. My oldest unit is now going on 4 years charging the original batteries in the system. I highly recommend using the remote panel for ease of monitoring. My units are not all in an easily accessed area.

So far, I'm very happy with this product. My setup is primarily to power my home network gear (internet, wifi, switch) in the event of an outage. I have two 12v batteries and a Xantrex Freedom Xi (1000W) pure sine wave inverter. I did read some other reviews and made sure to use 2 gauge wire from the batteries to the inverter. The charge controller stays cool and keeps everything running well. Someone mentioned low amperage output but what I noticed was that the amperage output only displays what is really being used. Example: If the inverter is off, the charge controller shows a very low amp value, but as soon as I enable a heavy load, it displays the expected higher amperage. I will attach two pictures, one showing 10 amps and another with 9.7 amps output.My only complaint and it's very minor is that it doesn't have a place to attach a ground wire. I have a ground wire looped through one of the mounting screw holes, not the best, but it's functional and I know it's grounded.