Bests & Worsts Reviews from Amazon

I wanted to like the unit I received, but initial discharge tests showed it did not deliver anywhere near its advertised capacity (less than two-thirds of it). After reading the manual, I plugged it in for 2 days to charge it fully, and it quickly reached 99% capacity after just a few hours. Then I unplugged it, and plugged a Kill-A-Watt wattmeter to one of the unit's AC outlets and plugged a small constant load into the wattmeter. Wattmeter read 120-123W, the unit read 116W. So far so good. But 3 hours later, with wattmeter reading 365 Wh used (or perhaps 350 Wh based on the unit’s own output wattage measurement), the unit reported only 50% battery capacity, thus a total usable capacity of only about 700-760 Wh, vs. the 1260 Wh referred to in the unit’s listing title. It delivered less than two-thirds of the advertised capacity. So, no. Do not buy. Plus the item is not returnable according to Amazon’s return policy (something about liquids and gases), thus leading to a need to contact the 3rd-party seller. To their credit, they authorized a return for refund. Five stars to seller, zero stars to the product itself.