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I was worried about purchasing a lesser known power station but i have been nothing but impressed with the Bibene since it arrived. My first impression is that it was impressively compact but chunky (about 17 pounds w/o power brick) with a flat handle (important for space savings vs the molded in handles). The aluminum case around the sides is a nice touch of quality (since most units are 100% plastic) and the build quality was fine.The display is nice, not large but it shows you all of the basics you need to see like total time to charge/discharge, battery percentage (and it has the battery bar graph too) and input/output watts. The display also shows (in small words) what outputs you currently have on and they flash if there is a fault (like a short in the 12 volt outputs, and yes I tested it). The display also seams reasonably accurate especially after I did a full discharge/charge to calibrate it. Once nice feature is even after the display dims you can just press the power button to make it bright again. To actually operate the power button you have to long press it for both on and off, which is nice to prevent accidental pushes and that also allows this display backlight feature.At room temperature the unit is very quiet (usually the fan is off or in 'whisper' mode it seems). When pressed hard the fan ramps up and a fan icon appears on the front of the display. Even at full speed the fan isn't overly loud or annoying, definitely audible though.Although DC output isn't regulated thanks to LIFEPO4 batteries it hold amazingly steady. At full charge my unit puts out 12.9 volts DC and at 10% it was still putting out 12.1 volts. Even after calibration the unit does seem to run at 0% for quite a while so that 10% could be 15% or something actual battery level.AC output voltage hovers in the upper 115 volts and only drops to 114 volts under load. It appears to have a built in 'soft start' feature which ramps heavy draw items up slowly a bit, but everything I tried seemed work. I didn't have a load which could get it up to 500 watts exactly (the rated capacity) but it handled 200 to 400 watt loads well.In my AC capacity test (I don't have the equipment to do a DC capacity test), the unit produced over 520 watt hours out of 614 rated using a steady 90 watt load (4 powerful LED bulbs), which is a very respectable 84.7% efficiency.The unit itself never got hot to the touch, just warm when charging or discharging. The included power brick charges at 90 watts but it did get 137 degrees F (as measured by my infrared thermometer) and that is probably my biggest con of the system. The manual does say that it gets hot though and so although I would prefer a cooler running adapter, it does seem to work fine.I tested it with solar charging and it successfully charged from my 100 watt, 18 volt operational Rockpals RO082 at about 64 watts on the partly cloudy day I tested it. It even charged on a completely overcast rainy day, although at an expected miserable 2 watts, so it seems the MPPT charge controller is fairly flexible in accepting inputs up to it's 100 watt max.Overall the Bibene is just a solid unit that meets it's specs. No show stoppers or major issues, it just does what it says it does. My only real gripe is the wall charger gets hotter than I would like, but it works and that is noted in the manual, so I can't really be too upset over it.

Note: This is an initial impression, at this point mostly experience charging with solar. I intend to update as I test it more thoroughly.The Bibene Power Station (purchased from Amazon seller LOYLOV) arrived in the original box, with original packing seals, all complete and new - showing state-of-charge at 83%.I charged it from that 83% condition, starting at about 2:30PM on October 10th, 2021, under a clear sky, not far from Las Vegas Nevada, using an Elecaenta 120W folding portable solar panel (purchased here on Amazon back in July 2021). The Elecaenta panel came with an adapter that matched the DC5525 charging input on the Bibene. The air temperature was around 75 Degrees, with completely shaded surface temperatures, measured with an IR thermometer, at around 80 degrees or slightly less. I stopped charging at 99%, with 12 minutes estimated to full charge. The final case temperature (Bibene completely shaded behind solar panel) was around 100 degrees, or a bit less (depending on where measured), measured with the same IR thermometer that registered just under 80 degrees in nearby completely shaded areas.It began charging at 61 watts for a few seconds, then quickly reached 81 watts (MPPT adjusting), where it sat for a few minutes, alternating with 80 watts, before settling down to 79 watts for the remainder of the test. This is roughly consistent with the specified 85 +/- 5 watts MPPT charging rate. Since this 79 watt charging rate was not very sensitive to precise solar panel orientation, I believe that the Bibene, not the panel, was the limiting factor, though the Bibene charge controller might have done slightly better with a higher voltage panel (the Elecaenta panel is rated at 18 Volts, though Open Circuit is closer to 21V). Although the panel had been heating in the sun a few minutes before the test started, it was probably still approaching equilibrium temperature, and panel voltage drops at higher temperature. Likely, very slightly better charging wattage would have been obtained on a cold day, and slightly worse on a hot day.Here is the approximate charging experience during this short test (some times may be off by 2-3 minutes):~2:30PM, 83% charged, 1.4 Hr to Full, 80/81 watts2:50PM, 88% charged, 1.0 Hr to Full, 79 watts3:15PM, 93% charged, 38 Min to Full, 79 watts3:35PM, 97% charged, 19 Min to Full, 79 watts3:42PM, 99% charged, 12 Min to Full, 79 wattsA quick examination of these numbers shows general consistency with the Bibene's rated Wh capacity, and a roughly linear charging profile. They are just one limited experience.I do note that the inverter (no load) gives ~114V, while our household AC (measured on same meters) is ~121V. That should be OK, but I will update after testing under load on various devices. The frequency reads at 60.1 Hz, which should be fine was well.More later.

I give it five stars. It performs as advertised. It costs less than many others. But I made a mistake buying it. I tried to learn as much as I could about this subject before I bought one. I watched many videos on You Tube and read several articles. I needed to buy one with more power than this one has, but this was all I could afford. I knew it would be able to power certain things that do not need a lot of electric power to run. I was hoping that it would power certain other things, at least for a short while. The statistics for this are on the internet and in the manual that came inside the box. But without going into detail, basically, whenever it talks about Watts - it's just not going to power anything more than 500 watts. [You can read the details (or look them up) if you want]. Yes, it will power my internet Wi-Fi, laptop, television, desk fan, tower fan, and charge my cellphone. No, it will not power my sump pump, Mr. Coffee maker, Black N Decker Coffee maker, and of course, not my microwave, etc. Power outages (especially during rainy times) here can last for long periods, so not having the sump pump is not a good thing. I was hoping that it could do these things, even for a short period of time, but, . . it has a limit switch. If there was something that was rated for 550, or 600, or 700 watts, I thought it would at least go for a while, and then shut off. But no, the limit switch cuts in, and it stops trying right away. In conclusion, I purchased this as advertised, it is not the fault of the company. Just don't believe everything you read or watch on the internet. I should have bought one with more Watts power. But this is all the money I had to spend.