The unit arrived in good condition in under a week, and so far I am very pleased. The first thing I noticed through the vent holes is that it uses a toroidal transformer, which should produce a cleaner output waveform, although I have not scoped it. My application is as a high-runtime standby power source for a wood-fired boiler, to prevent it from overheating because the circulator pump stops when it loses power. It only uses about 250 watts in total, so I did not need quite such a large inverter, but this one is large enough that its cooling fans don't even come on, which is nice. It should also be able to charge several batteries for an extended run-time, which means that the boiler can continue to operate normally until it runs out of fuel instead of shutting down the air and only continuing to circulate the water to storage until the fire goes out. I hope it will last a long time.

Excellent vendor A+++++

I purchased this with the idea of powering a single room in the event of a power outage. I was able to wire this up with no issues. It has now been running for almost 2 week with no issues.

Good product

This inverter is a good little device. It is based on a pair of very successful circuit boards that a lot of Chinese inverter manufacturers are using.

The difference with this one is that they have done it properly, and ironed out the bugs that say power jack did not in the one I bought previously.
The PJ would turn off when the battery was being charged by pulse width modulation devices, from false voltage sensing... this one does not. It takes all kinds of charging without faltering.

The next thing it does well,is run as a ups..... which is what my PJ was supposed to do.... it did... if you turned it off before turning off generator support, which was a pain.. Failure to do so meant that your inverter would blow up the power mosfets..
Somehow these ones can be disconnected normally. This means we can unplug a secondary power source at will, and the unit transferres from gen support to battery again and back again without any fuss.

It is a low frequency unit, which means it can have serious surge ratings, which it will do usefully... not just in the advertising blurb. Low frequency inverters are good off grid inverters, as they can start almost any load that you can throw at them without faltering, as they use the battery as the source of sine wave power, rather than in a HF unit where they level shift the voltage up to 300plus volts, store it in a capacitor, then use that as the energy storage.. means peak power is very very short....

This unit uses the battery as the storage directly, so it's surge can be astonishing, and last for quite a time to get the bigger motors in compressors and the like going. Water pumps, fridges all seem to run flawlessly.

So it does what it is supposed to, and does it without carrying on. It is a good little unit to run a modest off grid shack or small house.

The only negative is that the fan algorithm is a bit annoying, but thats all I can fault with this one.
It does not have lots of bells and whistles, but is an honest worker.

Very happy

Solinba 3000w(Peak 9000w) DC to AC Off Grid Converter Generator 80A Battery Charger+Pure Sine Wave Power Inverter+UPS with LCD Display DC24v to AC110v 60Hz