SUNGOLDPOWER 10000W DC 48V UL1741 Solar Inverter,Support Parallel, Built-in 2 MPPT Solar Controllers, Max. 200A Battery Charging, AC Input/Output 120V/240V(settable) Inverter Charger(10000W DC 48V)

Excellent inverter, very powerful and reliable. The SUNGOLDPOWER 10000W DC 48V UL1741 delivers stable performance even under heavy loads, making it ideal for residential or small commercial solar systems. The build quality is solid, pure sine wave output works perfectly with sensitive electronics, and the UL1741 certification provides great peace of mind. Easy to set up, quiet, and highly efficient. Very satisfied with this purchase—highly recommended.

This 48vdc -10,000 watt 240vac inverter has been making clean steady power without any problems at all. Even runs my 5 hp 80 gallon tank air compressor just fine. Along with air conditioning, freezers and fridges. It’s very quiet but slight sounds can be heard from the fans when it heats up for a few minutes. Then back quiet again. When grid power goes out I’ll have no problem because this will keep everything running without gasoline generators. Also it switches to inverter power anytime the grid goes down without me doing anything. Solar panels will keep battery charged in daylight ( as soon as I get them installed ) so night and day I’ll still have everything running. If power is off for days it really doesn’t matter. Plus I’m saving a lot of money on my electric bill now. Inverter/ with batteries in the day and grid and charge batteries at night. ( My electric plan has free electricity at night ). This is the only inverter I’ve found that will allow you to set when it charges your batteries from the grid, and when you want it to go from grid power to inverter/battery power. Several times a day if you want. Then when you want it back to grid power. Or just stay on inverter power all the time. I charge batteries at night when grid power is free on my plan. Then go to inverter/batteries in the day. It has a huge amount of options ( 68 ) to do exactly what you want it to do. You also can add up to 10,000 watts of solar power into it ( has two MPPT’s ; up to 500 vdc ) along with the grid, and batteries, or any combination You can set how much current to charge the batteries from the grid up to 200 amps. Take your time and think what is best for your system and if it’s not how you want, then change the settings until it is. Not hard at all. I absolutely will be adding more of these 10,000 watt inverters, up to 6 total I think it says, as soon as I get more batteries. When this inverter switches, automatically, you set how you want it, to the grid or from grid to inverter/battery power, you will never notice it happens. No flicker or flash and doesn’t cause things to be reset like some do. Tv never flickers or blinks. It is clean, pure electricity. Maybe better than the grid? The price is unbeatable. Compare this to other big brands and this unit beats them all. The company has been around a long time with great products. Well worth the money…. Buy these. I’m not selling these. Just excited to finally get an inverter that really does work well how I want, not how they say I need.

This is a very nice inverter. Works exactly as it's supposed to. I really appreciate that I'm able to have two different solar arrays come in and power the unit. Furthermore on a sunny day I can easily charge my 30 kilowatt battery Bank in less than 3 hours.

Update 12/17/2024: Still mostly working fine except when its not. Power went out today and it switched from utility to batteries without a hitch, I didn't even realize power was out until I got a text message from the utility company. I was running in UTIL mode because it has been stormy with little if any solar, so I wanted to preserve batteries for outages. But I normally run it in SBU mode (solar/battery/utility) where it uses solar first when available, then battery, and then its supposed to switch to utility. Solar and battery are fine, but a week ago it ran the batteries down until their BMS's shut them off completely. I had to use a separate charger to bring each battery up above it's shutdown voltage before starting the Sungoldpower inverter again, this time in UTIL mode. Luckily the BMS kept the batteries from being too deeply over-discharged, but they went way below the voltage that I want the inverter to switch to utility. I'll probably be changing to a better brand soon. Update 7/17/2024: Changed from 5 stars to 3 It turns out that apparently I was never running out of battery and switching to utility. When I finally ran the battery down, the switch to utility was painful, It involved power going off when battery died, then after about a minute inverter starts again, then shuts down again. After doing this a few times it finally switches to utility (or if I get out to the garage fast enough, I manually switch the inverter to UTI mode to prevent any more on/off cycles). Lately its been very hot here (above 100F every day for a couple weeks) and so I've run the batteries down quite a few times by using the AC. To use the solar power effectively I set the inverter to Sbu mode during the day and I manually switch to UTI mode every evening to avoid the clumsy switchover. So I have to go out and switch the mode twice a day, and if I wait too long in the evening the power goes off, then comes back, then goes off, etc. Update 5/18/2024: System has been working great for 3 months, haven't had any issues. I have a fairly small battery bank, so I have the inverter set to switch to utility if batteries get too low. I'm sure this has happened a few times, but if so it has been seamless, I never noticed anything. A few days ago got a notice that my power was out. I would never have known if they hadn't told me :) Noise: I have the inverter mounted in a detached garage, so noise isn't an issue for me. But the fan runs a lot and is a bit loud, so be aware of this if planning to mount the unit near or in your living space. Alarm: The beeper seems to beep whenever the sun is still up and the batteries are full. No fault light, no fault codes, just beeps. So far I can't figure out how to disable this except to disable the buzzer completely. Original (2/2024, expanded 5/2024): I have an existing grid-attached solar system that doesn't quite meet my needs. I still pay for a fair amount of electricity and because the existing system doesn't include batteries, I still have to fire up a generator when the power is out. Expanding the current system was problematic, so instead I moved the house to an off-grid system (with grid backup) using this 10kw Sungoldpower inverter. The rest of the property (barn, well and garage) are still on the grid with the grid-attached solar. For safety reasons, and because I haven't told the utility company about this, this system does not feed back to grid (there's a setting to control grid feedback). I added 4800w of panels and 10kwh of LifePo4 batteries. This isn't quite enough battery, so I will probably expand it later. In the mean time, the system switches to using utility when the batteries get too low. I currently have 4800W of 400W panels connected (12 panels). This maxes out one of the two MPPT controllers. I will hit the upper Voc limit at 9600W using both MPPT controllers. The specs claim max 11kw of panels, but that assumes that you can connect them in a way that stays within max voltage and max current limits. My panels are far below max current, but putting two strings in parallel will exceed max current. So I'm limited by max open circuit voltage. Remember that if the output load goes to zero for any reason (batteries fully charged and no active loads) the panels can go to max Voc. Also be sure to adjust max Voc for your panels for coldest possible temperature. Anyway, my 400W panels are 37Voc at 25C, so around 40V at -5C, the coldest it ever gets here. BTW, the rating are usually in Celcius...deal with it. So 12 panels in series gives me 480V at -5C. Max Voc for the inverter is 500V, so for my panels, 12 panels in series is the max. With two MPPT controllers, I get to have two strings of 12 panels for a max of 9600W. My panels are bifacial and claim max bifacial of 500W each, so with 24 panels they might reach or exceed the max of 11000W on a good day, but I doubt it. BTW, I chose to put all 12 of my panels on a single MPPT controller in order to try to get better efficiency in low light (overcast) conditions. There is a minimum panel voltage requirement which will be easier to meet with all panels on a single controller. At least that's my reasoning. For now the second MPPT controller is unused, but I may get another 12 panels eventually.