PowMr 5000W Solar Inverter 48V DC to 110V/240V AC Split Phase Inverter Pure Sine Wave Power Inverter with 100A MPPT Controller 5000W Hybrid Inverter, Max.PV Input 5500W, 500VDC, Parallel 6 inverters

Final edit:As of today I have been off grid nonstop with this unit for exactly one year. It hung up only once, and that might have been my fault. Not sure exactly what happened but I am very pleased with the unit. It has paid for itself.Display would go wonky occasionally when pressing buttons. Turned out I was inadvertantly also pressing on area below buttons. Stopped habit and display has been fine. I have really grown to like this unit despite a few minor quirks it has.Edit:Reconfigured my panel strings to all have nearly equal total Vmp voltages, and each string has about the same shading throughout the day. Basically pulled all of the power inflection points together. In English, each string behaves very similarly to the other strings. System is performing much better now. I have been impressed with how well this unit works once you are aware of its limitations. Been running the house on it for a month with ZERO issues. Upping to 5 stars.Edit #2:I have had numerous written conversations with (friendly and responsive) manufacturer. Some of my questions got answered but some did not, probably due to language barrier. I have set boost voltage to about 55 V, boost duration to lowest positive time, and float voltage to 54.2 V. I have a very large battery bank. As a result, even 60 Amps of incoming current barely raises voltage above resting.Be aware that there is a 20A limit on PV input current. So say you have 4.9 kW of panel power (49 100W panels as 7 strings of 7 panels each. Assume Vmp is 20V and Imp is 5 Amps. So you have 140 Volts and 5 Amps per string. PV total is 140 V and 35 A but controller will stop at 20 A so it will only harvest 2.8 kW max. Solution is obvious...reconfigure to raise string voltage. You pretty much HAVE to use high string voltages due to this 20A limitation. No big deal if you are aware up front.Bottom line: this is a very reliable, full featured unit, although it could be better. Manual needs work and the MPPT tracking software is mediocre at best. I suggest locating the 60A PowMr MPPT Controller listing and download the user manual link. That applies for charging and the manual is written MUCH better.If this unit lasts ten years then the initial price difference over less expensive units will have been well worth it. I am fairly happy with my purchase, and would be very happy if my panels were in full sun all day. Then the MPPT tracking would not be an issue. I give 5 stars if using in full sun and 3 stars if using partially shaded.Edit #1:There are some issues with the manual, although it is better written than mamy others I have seen. They never describe how the software goes about charging the different battery types. They need to, with graphs, because they do not seem to be doing it the standard way. For example, what value holds the initial voltage the charger will end constant voltage charging at? Is it boost voltage? What does boost voltage do, and to what battery types does it apply? Why does it say no float for lithium but then give flioat voltages for each lithium battery type preset? How does their equalization charge work, and what battery types does it apply to? Why do none of the lithium presets match to the typical 100Ahr LiFePO4 battery? On page 38 they describe initial settings for various lithium battery types. They use labels like LFP15 and LFP16, but never explain what the numbers mean. An internet search suggests these are just arbitrary numbers but then why not start with 1?If seller responds I will post the answers here.Original reviewAfter a cheaper inverter destroyed $400 in household appliances I decided to try this one.Have been using it about a week an am pretty impressed. It takes awhile to boot up. That is good because it indicates the unit is doing a lot of checking things out. It has worked well powering the house, and nothing unexpected has happened so far. It also puts out a real 120V, which I really like. Other units I tried put out 115V, probably to claim they support both 110V and 120V without a switch. Really bad things can happen when the voltage varies by more than 10% from what electronics are expecting.There are a lot of configuration options and a lot of alarms. This was initially overwhelming but it mostly makes sense now. This unit is incredibly flexible. You can use multiple units to do split phase and three phase. You can generate 120V, 208V, or 240V. I have a second unit arriving today to try 240V split phase, which is what the power grid delivers to most homes in the US. Note that with the second unit you double the 5kW of power capability...but you also double the idle power consumption.The idle power consumption is not bad. It has a variable speed fan, which indicates the designers were thinking. Like other units of this size, plan for at least two extra 100W solar panels and at least a 100Ah 12V battery just to handle the idle power consumption on sunny daysThe MPPT controller part will accept up to 500 VOC strings of solar panels, but note that you have to have panel strings of over 120V to generate any charging power. This is great because when you jack up the panel voltage you reduce the current. Current, not voltage, impacts wire size and efficiency. There is a potential downside, at least right now, in that the MPPT software (I have version 2.2.5) appears to pick the first inflection point instead of scanning the entire power curve. I initially had two 420V panel strings. In full sunlight it cranked out the power but if one unit was partly shaded and the other in full sun, output was very poor. I currently have 5 150V strings feeding the panel. Yesterday one string was in full sun and the other four were partially shaded. By disconnecting the four partly shaded strings I got DOUBLE the total power output (from just having one sunny string) ! It appears the inverter software is updateable and I hope manufacturer fixes this software issue. I do have blocking diodes every two panels so the power from the sunny string was NOT backing up into the 4 partly shaded panels (which is what I was testing for). It is definitely an issue with how the MPPT software works. It should periodically scan the ENTIRE power curve to find the inflection point that generates the most power. The difference in total harvested power can be substantial. Many lower priced quality MPPT converters do this, and I have two of them. Easy check is for software to try significantly higher voltage after finding an reflection point. If power is higher at test point than inflection point, start checking again from test point.I like that this has a grid transfer switch built in, but have not used it yet.

I accidentally fried my Renogy inverter by putting to much voltage to it. I was needing something quick and I picked this up. Needless to say it is a piece of junk!! It worked fine for a month and all of a sudden the thing keeps rebooting 3-4 times a day after 4 weeks of use without issue.

I have bought 4 of these inverters for my friend's house. Upgraded their solar system to add a LFP storage battery, so we needed to change out the inverters. In my experience, the PowMr inverters seem to be good quality and are certainly a good value. They're extremely configurable - you can set them to solar-only, or solar and battery, and you can choose whether you want excess energy sold back to the grid or used to charge your battery.The many settings in the instructions can be overwhelming for a newbie, and when using multiple inverters, setting to split-phase or 3-phase operation requires some specific configuration on the settings. However, this is where their excellent customer service comes in - whenever I had any questions, I simply asked them. Alex was always quick to respond with helpful advice. In the end, I got it all set up just right, and the home is entirely off-grid most of the day!

I will update this review as it is used more.10/2/2023:The device arrived well packaged, but there was something rattling around in the case. Was able to pull out a piece of black glue/insulation that was from a transformer mount. Tech support allowed me to open up the full case and verify - said it was good to go.Mounted and installed in an off-grid setup. It only has 3 mount points, one of which is accessed through the open bottom case. It is outputting 120V AC as designed - will scope it later to see how pure-sine it is under load as compared to the grid. Terminals for AC, PV, and Battery connections are terrible - no space to bend or finagle inside without a lot of effort and luck. The plastic teeth(?) in the openings of the case are useless and either bend irreversibly or break doing nothing to keep anything out after the first insertion of an object; regular fiber dust guards would have been much better (or nothing at all, as they just impede installation). Got it done with some patience.The bad part happened on connection of the solar array. PowMr reading about 170V over what the PV string was (reading 340 instead of about 170). Multimeter showed voltage range on the PV breaker from -20VDC to 375VDC, cycling like AC. Sparks everywhere out of the top right-hand side where an air vent is, specifically from one of the screws holding the vent on. Opened the case fully again, and found the PV Negative cable on the inside disconnected and laying against the case! Didn't get shocked and the unit didn't seem damaged, so I guess it is a positive that this unit survived PV potential interacting (more than likely) with its own AC output voltage causing ridiculous voltages around the board, and the PV- was the one that fell off instead of the PV+. I would highly recommend opening up the case and checking for wires that go nowhere before using - although according to Support this does void the warranty so consider that in your communications with them. Minus a star here for obvious reasons.The MPPT charger seems to be pretty lousy. I'm getting about 30% of my strings rating in OK conditions, which tested less efficient than a cheap PWM controller. But, this is at around 170V, where I had read somewhere that the optimal for this charger was 340ish volts. It does power itself pretty easily off solar, running at about 50-75W when mostly idle (can't turn off the inverter). There is more that I can do here (better angle on the panels and more panels for voltage) so I'm withholding a star for now for what seems to be a poor MPPT, but I will test and upgrade everything I can in the next few months to get a better idea of the charger's performance.10/11/2023:Update: The MPPT issue was due to an incorrect setting on my part - I had meant to limit the AC Grid charging amperage limit, but set the Total Charging Amperage limit instead. MPPT is now functioning OK. +1 Star, despite the poor-ish instruction manual this was mostly my fault.