PowMr5500W Solar Inverter 48V DC to 220V-230V AC, 5.5KW Pure Sine Wave Inverter with 100A MPPT Charge Controller, for 48V Lead-Acid and Lithium Battery, Can be Parallel up to 12 inverters

settings won't saveinconstant power outputno customer service whatsoeverfan is loud and won't stop even without any load

I'll start this review by saying I'm very impressed with the capabilities of this inverter for the price. I'm using this unit to replace a ~15 year old low frequency modified sine wave Tripp-lite APS2448. My old unit's modified sine wave output was fine back in the day, but it has been causing issues with modern electronics amd motors so I opted to upgrade. I was hesitant to purchase a high frequency inverter but I can say, for my use case, (backup power for my IT rack, lights, boiler & its pumps, select outlets, etc.) this unit performs flawlessly. My old inverter caused a hum in any inductive loads, and would occasionally trip the protection devices in my boiler as the pumps weren't operating at the correct RPM. This new unit runs all the loads connected to it as good as my utility's power. I was most drawn to this unit as I could use my existing 48V LiFePo4 battery, and can expand my solar array without modifying my contract with my utility provider. I've yet to add solar power to this unit but I've no reason to believe it won't perform as flawlessly as the rest of the functions of this inverter.Pros:Low self consumption of ~35 watts.Cooling fans are on constantly, but modulate with the load so they're not noisy or wasting excessive power.Output voltage and frequency are both easily adjusted (220-240V 50-60hz)Battery parameters can be adjusted easily to accommodate lead, and various lithium chemistries.Unit can prioritize solar, battery, or utility consumption. It can also have priority set for what energy source charges the battery.The inverter can charge the battery at up to 80 amps, and charge rates for utility power or solar can be individually defined.Cons:This unit has rather small wiring terminals; you'll need pin adaptors if you want/need to use oversized conductors on any connection.The junction box is cramped and rather difficult to navigate with large cables.Other thoughts:This is a high frequency inverter. This has several tradeoffs such as limited starting power for inductive loads, lighter weight than low frequency units, lower self consumption than low frequency units, potentially shoter life span, etc.This inverter has no integral physical disconnects for AC or DC. (This may be a pro or a con in your use case)This is a 230V L-N inverter. You'll need to run an isolation transformer to run any 120V loadsAll of that being said, if you know what you're getring into, this unit is phenomenal value for money.

De doce inversores que he comprado 4 he tenido que devolver por defectos. También muy lentos en devolver el dinero de la compra. He tenido que esperar hasta dos meses para que restituyan los fondos en mi tarjeta de crédito.

Don't waste your money here. Poor customer service, didn't honor 1 year warranty, faulty, and I wish I could've gone back in time to never buy this horrible piece of equipment.

Since we got it, we had other stuff already on there. This was gonna be upgrade and it didn't even work. The LED screen didn't turn on Nothing.