PowMr MPPT Solar Charge Controller 60 amp 48V 36V 24V 12V Auto - Max 160VDC Input, LCD Backlight Solar Charge Controller for Vented Sealed Gel NiCd Lithium Battery【Software Update Version】

The only problem I found with this is it seems like the directions are extremely hard to understand what I did was go on YouTube and find videos that other people made about this how to program it what to press and that was a hundred times better than those crazy directions this came with although I must give this unit five stars this works very well it did not overheat like most of them do the wires did not get hot like some of the charge controllers do I am very impressed that this thing has a built-in fan that when it does get hot the fan comes on and cools it right down I must have bought 10 or 15 of these from different manufacturers about four of them that I purchased from different manufacturers work very well then I saw this one this has got to be the best one yet many of those cheap things overheat and the wires get extremely hot and you end up returning them I am so impressed with this one I am going to order a second one for a backup down the road if something should happen to this one this is very well built it has quite a bit of weight to it I like the fact that it's in a metal case instead of plastic somebody has a review on one of these and a thing burned up the only thing I could imagine that might cause that is if the fuse blows from the charge controller to the batteries that would leave solar alone coming into this which would probably take it out always be sure to hook up the battery first then the solar again the unit is very well made for the price I also would like to say I have 600 watts going into this 600 w solar panels even on a very sunny hot day the wires going into it only get warm I also like the fact that this displays how many amps you have coming in at the time of bright sunlight it also tells you the exact wattage that is coming into the system some of the cheap plastic chargers would have burned up although they say they are rated for 80 to 100 amps that is not always true also look online some people have posted pictures of the inside of this thing it is very well built with big heat sinks I suggest you not take just my word for it but look at the reviews on this incredible I really think the manufacturer of this has really done their homework I am very happy to finally find a charge controller that works extremely well for this really good price

For the price, a solid choice for a charge controller. Purchased to stabilize a solar-powered water well pump that a previous owner had... not treated well, shall we say. Connected to a 48v series-string of deep cycle lead-acid batteries, charing off of 2 330w solar panels (in series). Yes, the documentation could use work, but is roughly comprehensible with the application of high-school level knowledge of electronics and electrical theory. Durable enough to put "in the field" in a semi-protected environment, and cheap enough to replace outright if it fails due to neglect or hard use. (I'm picking up one as a "shelf spare" shortly in anticipation of that eventuality. No regrets buying it. Does what I need, no fuss, no muss.

Works ok. Have 2 327 watt panel. When i first hook it up i was getting around 520watt. Then like a couple of minutes it drop down to 440 watt at most and stayed around 420 to 440 all day. So idk. Well see bout it tomorrow oh and yes. The slot are mainly for 10 awg wire at max. And i can't seem to change the setting at all

When I got this, I plugged everything in, set it up for my Lithium batteries then wired it up to the panels. The holes for the wires are pretty small for the larger gauge wires, but I got it hooked up..... Then it kept overheating, and it's safety feature shutting it off. I contacted support at their website, and was answered within 8 hours; they are VERY helpful, and were pleased to offer me a full refund, giving me till Jan to do the return. Well, it turned out I needed to split my larger gauge wires, and put each wire into both holes for each connection, as you can see in the photo, and instead of the breaker switch I had been using (60 Amp), I got 150 Amp breaker to relieve any traffic jams going on there, to keep that wire cooler. Also, pay no mind to my battery connection wire colors leading into the controller. They are reversed: red is black (negative), and the black is red (positive) as they were the only wires I had left it the right lengths to safely hook it up.... AND the digits showing on the window are low, because the sun is barely starting to rise above the horizon right now, so no charge going on yet. Now, since I split the wires in the hook-up process, it is working like a dream. YES, I am VERY HAPPY with this charge controller. YES, I HIGHLY recommend this unit to others. YES, POWMR has proven themselves to me, as makers of good products, and EXTREMELY GOOD CUSTOMER SUPPORT! Thanks, PowMr folks, for a great product that has helped me to upgrade my system, where i could never have afforded to with the other prices.

I was excited to start using this as many reviews gave it good ratings. After install, I was not getting as much current to the batteries as expected, so I decided to setup some quick switch networks so I can quickly compare between this MPPT controller and my existing PWM controller. Guess what, my PWM delivers about 50% more current to the batteries than this piece of JUNK! Details if you want to understand more: Unboxing: During the unboxing stage, I notice that there is some blue protective film wrapping the controller. The bottom right corner had been peeled back a few inches. There were a couple of scratches on the lower controller. I noticed a depression in the housing in the upper left side where the mounting bracket attaches. My initial thought was that this might not be new, or maybe it was reworked in the factory, or was simply mishandled. I decided to try it anyway. After removing the blue protective film, this also removed the model sticker. Instead of placing this label on the actual metal housing, it was place on the protective film. Maybe someone was in a hurry? Or maybe they expect you to run this with the film left applied? Not a good first impression. Initial Setup: The manual is actually written fairly well for this type of item. Still, there are errors in the manual. (For example, Fan on/off temperature conversions between F/C are not correct.) In the manual, Installation section, it clearly shows step 1, connect battery, step 2, connect the solar panel, etc. I read the entire manual before actually making connections. If I had not, then I might have connected the panels without configuring the MPPT settings. Later in the manual it says to make these settings for absorption and float voltages while the battery is connected, but panel is not connected. I think a simple statement here to the fact that a configuration is needed would be a nice addition. Under the Operation section in the manual, I found that a bit small to read. It took me a while to understand what that diagram was trying to tell me, but it was obvious after I actually went through the controller settings. Under Manual Setting, this is where you can configure the controller to your preferences. D00 is for setting the load on time. I do not use this, so I left it set to 24 hours. D01 is for setting the float voltage (according to the manual). My controller had this set to 14.5V Ouch! D02 is for setting the absorption voltage (according to the manual.) My controller had this set to 13.8V. D01 and D02 are in conflict between the manual and the default controller setting. Which is correct??? D03 is for setting the low voltage shutoff. I do not use this and left it set to 10V D04 is for battery type configuration. Manual states 0 is for lead acid and 1 is for Lithium. The Amazon description states that this is configured for lead acid (0) but mine was set for Lithium (1) as many others have commented in the reviews. The settings are completed now. I removed battery voltage and reapplied to verify that the settings remain. They did remain. Now I connected the panels. My panel and battery configuration: I have 5 12V panels with series diodes for backfeed prevention. The cathodes of those diodes are all connected together and goes to the Battery+ on the charge controller. The Negatives from the panels are all tied together and they go to the Battery - on the charge controller. I chose diodes as to keep any panel backfeeding from happening due to shading, or controller malfunction. It works well on my PWM setup. I have switches setup so that I can quickly move battery and panels from one controller to the other. I have made many observations at different sun levels and different battery voltage levels. I have 12V batteries connected to the charge controller. (The new capacity rating for all three parallel 12V connected batteries is about 90Ah, but due to aging, I estimate it is closer to 30Ah.) I have tested in non-direct sun and find that my PWM controller is providing 0.49A to the batteries (Battery voltage is about 12.3V). If I switch to the MPPT controller, I only see about 0.39A to the batteries. Due to the smoke and other haze in the air this week, I am not getting peak performance from my panels, however at the expected peak performance (time of day) I measured 70Watts being delivered to my batteries (batt voltage around 12.8V) with this MPPT controller. I switched back to the PWM controller and I get 110W. I have done this probably 12 times and EVERY time I get the same result. I ALWAYS get much better current from my PWM as I do this MPPT controller. I verified the settings with the manual and it seems to be set correctly. I contacted the supplier. Although they have very prompt response time, their response was disappointing and not helpful in any way. The only conclusion I can draw at this time is that either this item is defective, or, the design really can't meet the specifications implied or stated by this controller. I have no use for this controller and will be returning it as I am within Amazon's return window. I am deeply disappointed that this did not work out for me. Many other reviewers have stated that their controllers work well, but I don't think any of them have made actual electrical measurements or comparisons that I have done. I could take this much farther, but due to not wanting to spend time on what I consider to be JUNK, and working toward a fast approaching return window, I opted to stop my testing here. It is pointless to continue. I hope that anyone that is seriously considering a purchase of this item will do their own electrical verification to see that what power is being delivered to the batteries actually makes sense. It is not hard to do with a simple Volt and Current Meter. I have dedicated power meters setup before and after the charge controller so I can see what is happening, but simple DVMs can work for lower currents. But, be careful of the max current that your current meter can handle. More than 10Amps might be bad for the meter. Bottom line is: Do you own verification and see that this really works for you. Don't just say, oh, it runs my television or my computer. That really does not say anything meaningful. Conclusion: While this controller does work about 50% of what it should, you could save a lot of money and just buy a simple PWM controller. Or, maybe another MPPT controller actually works as it should. I will be on the lookout for a better controller. My conclusion is that this is JUNK and that you should not buy it. There is a chance that I just have a defective controller, however the replies with the supplier were not helpful and never suggested a replacement. I suspect that the design is just not capable of what it claims and I will not waste any more time trying to get it to work. If you do purchase, please do your own verification.

For the price, these are excellent . I have had one in use for about 18 months, and another in use for about 9 months Both have worked flawlessly. I bought two more for backups, or for new projects, but haven't needed to install them yet But I tested them before I put them in storage and they worked properly. I wish that these had been available back when I spent multiple hundreds of dollars on big-name 'professional' type charge controllers. I am only running about a maximum of about 20 amps through each of them, so I can't testify as to how reliable they would be running at their rated 60 amps. I do wish there was a provision for a similarly inexpensive remote meter.

Been a rock solid unit for 2 years now. My only gripe is that it won’t “wake up” lithium batteries that have hit low voltage disconnect. Once the controller looses battery voltage it shuts down entirely even if the sun is out. I have to re awaken the batteries manually before it will come back and start charging again.

So far, so good. The seller was very prompt and helpful answering my questions and I was able to get it installed and configured quickly. I only have two 100 watt panels running through it right now but hopefully will increase to 4 this coming week. I will be wiring the panels in a series-parallel configuration to keep voltage loss down. Update - Last week I ran 4 panels in parallel with no problems charging my 4 100 ah battery bank and in two weeks I will add two more panels and batteries for a total of 6. I will wire in series-parallel to provide 67.5 V to the charge controller. Update - This past week I connected 6 100 watt panels in parallel. I was somewhat disappointed as I never hit 400 watts in full sun. After rewiring in series parallel, and supplying a little over 60v to the CC, I was blown away. At one point the CC was displaying more than 600 W! I'm assuming that the CC display wattage is computed from what voltage and current are being supplied to the batteries. In a couple more weeks I will switch from 12V to a 24V battery bank and inverter and adding two more 100 watt panels. I am looking forward to this! Update - I have been using this controller since around the middle of April with several configurations of the solar panels and so far it works fine, but... There's always a but, right? ;) This past week I started noticing the cooling fan howling and growling each time it kicked on. After running a minute or so it quit howling but I fear it is on it's way out. Will e-mail seller to see what they want to do. Update - Seller shipped me a replacement fan and everything is working great!