All major brands like APC, Cyberpower, etc. have Lithium based UPS devices, but are price gated at a min of 800 USD, commonly 1500 USD or more, marketed for the enterprise sector only. Finally a company that brings the longevity of lithium to the consumer UPS based market at an extremely affordable price!With my current Cyberpower 1500VA/900W model, with an avg of 100w draw, i can get about 45 more mins of runtime before loses power completely. There was a year where I experienced freq outages and had to rely on the UPS to keep me online till I could get the generator started and connected to house. Also the generator would occasionally spike to 62Hz, which is outside Cyberpower and APC's sensing AC power freq, so it would stop charging, supper annoying. After a year of full drains I had to replace the battery, which avg about 1/3 the cost of the unit itself. If infrequent power loss events the batteries usually last about 2 years, 3 years if they're AGM instead of sealed lead acid based.With this Goldenmate unit the battery runtime with an avg of 100w draw lasts for almost 3 hrs! The power loss alarm is a very pleasant beep that is about 3x lower decibel than other UPSs. I'm hoping the batteries used in this unit are on the higher end and will last near the 10 year warranty mark. Since this is Lithium and not AGM based batteries, it's about 3x lighter than the comparable AGM based unit.The cons:-No USB connection for external monitoring/feature option changes with rasp pi/linux like most UPS units at this price point have had for the past 15+ years.-No way to mute the alarm or adjust it to turn on when the battery is critically low.-Spacing issues on the 8 plug model, in order to connect a large voltage regulated plug (e.g. cellphone charger) I have to use a power strip, or partially cover another plug.-Power the unit on and off is a simple push, rather than a push and hold for 3+ seconds, which makes it possible to accidently power down if something accidently knocks into it.Overall this is an excellent consumer UPS, if it just had some of the industry standard features mentioned in the cons section, this would easily be a 5 star product.To those wondering how to dismantle this unit it's put together using tabs, so just use a shim to pop them then the cover slides off. Although the power loss alarm is quiet, it gets annoying to hear for 3hrs, so I had to get into the unit to disable it.3 Weeks later updated from 4 to 1 star review.I live off grid, when anything with an initial high AMP draw like a water pump or AC unit kicks on, everything attached to the goldenmate stays on except for my PC for some reason. My other UPS didn't have that issue. Also after about 2 weeks, I hear a noticeable buzzing sound, it's slightly loud than my PC fan. This usually indicates that either the voltage regulator is about to fail or is of subpar quality, either way it's super annoying. But the number 1 thing I need it to save is my PC during a power surge/outage event which it fails to provide.Since it's SO much cheaper than any other lithium based UPS, I'm going to exchange it, I'm hoping this is just a dud. I will update later.12/2/24 update - 1 star to 4 starsThere was no option to exchange the original unit I purchased from August, so I returned it for a full refund.They had a cheaper deal directly from them vs their Amazon store for Black Friday so I ordered 3 of them and and got an extra $9 off each for bulk discount. They were shipped much faster than when I originally ordered though Amazon in August 2024.The current model has had an improvement revision compared to the previous unit I bought in August; the newer unit's power button has been changed from standard on/off to a multi-function button. So now there's no accidental power switch bump power loss, it's a 3 sec hold delay. A single press temp mutes the buzzer during power loss and fault code errors. They also added a proprietary serial port for troubleshooting - Unfortunately, I can't find any documentation on consumer usage, seems to be a factory only service serial port.To add to the con list, they should implement extra app based controls to help prolong the life of the battery, or implement some hard coded limits like unit shutdown at 10% battery life.12/14/24 update - Zero post-sale support - 4 stars to 2 stars2 of the 3 units I ordered direct work perfectly, the 1 that doesn't, after ~2 weeks of great performance, it auto-shutoff with the error USO, which is an error referring to an overload. The directions to resolve this error are to turn off the unit, unplug all devices, turn unit on and plug in devices 1 by 1. I found out that mine is defective, I plugged in a monitor that was using 1watt, then a phone charger using 15w, and various other devices, they all singularly caused the USO error. I emailed them at [****], it's been 3 days now and no response, it's the weekend now, I'm going to give them till Monday...