ALLPOWERS R2500 Portable Power Station, 2016Wh LiFePO4 with 4x 2500W (4000W Surge) AC Outlets, 0-100% in 1 Hr, 3500+ cycles Solar Generator for RV, Home Backup, Emergency, Outdoor Camping or Travel

So far this unit works well other than the wifi refusing to stay connected without manually powering the device off and on again (rendering the wifi functionality useless essentially). I purchased this unit over others as it offered the ability to control it when not at home so this is very disappointing. If the wifi connection is an important function for you I do not recommend buying this.

love this easy to use,great for my van ,if you have trouble connecting make sure your gps is on on your phone

I have both an R4000 and this R2500. Since AllPowers still hasn't released their B3000 yet, I make do by letting the R4000 collect all the solar power, rather than distributing the solar between the R4000 (<2kW max) and the R2500 (<1kW max). Yes, I also have 3 x 600W panels. So instead, the R2500 receives its power from an AC output of the R4000, and the R4000 takes all 1800W of solar (or will, this summer, as it is winter right now).In theory, this should work well, with the R2500 typically remaining fully charged unless there wasn't enough sun that day, or my TP-Link TAPO switch didn't schedule the mains to the R4000 for long enough overnight to compensate for randomized circadian influences. Incidentally, I also have a second TAPO to isolate the R4000 from the R2500 when needed. These TAPOs also allow me to record power throughput, which is both handy and very cool, but begs the question: why doesn't AllPowers' own software do that? It isn't that difficult.All the same, this setup works... sort of.HOWEVER, the setup reveals some more serious design flaws (that again ought to be solvable by software) common to both the R4000 and the R2500. First, you can't "tell" these units to go into UPS mode - you have to mains-charge them, remove the mains, draw AC output until the battery level drops, and then reapply mains. Doing a twirl and clapping three times may also be required, but that isn't confirmed in the manual. Only then will you see the reassuring UPS mode flag light up on the display. There's nothing regarding UPS on the mobile app (why the heck not?). BUT... yes, there are a lot of these... But once the battery is fully charged again, the UPS indicator extinguishes. After that, it is anyone's guess as to whether it is still in UPS mode. At this point, being a software engineer, I'm thinking, "Someone forgot to draw a state diagram or three."The next issue is that it appears the quoted <15ms switch-over between mains and inverter is still too long to avoid disruption down the line. It might crash or abruptly power off your connected computer. Indeed, if it hasn't achieved that elusive UPS mode (they need to drop that as a selling point until that's fixed), what will happen is that the unit actively TURNS OFF its AC output and doesn't turn it back on until you tell it to. Not exactly what you'd expect from a UPS. (Must I draw a UPS state diagram for you, AllPowers?)So now I've added a small Eaton UPS down the chain (plugged into the AC outlet of the R2500). Being a REAL UPS, it understands how to remove glitches and stay on during power brownout or loss. Like a UPS should. The good news is that it is a SMALL one - it only has to bridge a 15ms gap, so it doesn't need much stored Ampere-hours. It just needs to meet the power level of my computer equipment for all of 15ms. So that's good - even though it shouldn't have been necessary, really. I mean: £125 more expended! But now I really don't have to worry about power cuts, brownouts, glitches, and a few hours of lost sunshine. Of course, during winter, all this adds an extra 100W or so to your overall power draw - something they miss reminding you of even in the small print. Expect an extra 50W per power station. You will notice this in winter. In summer, who cares? You'll be raking that sun-power in!Achieving happiness in solar power is as much about managing expectations as it is basking in the sunlight with a tequila. But it probably helps understanding the limitations. All brands will have them. At least you'll now know about these ones.