FINALLY, the power went out. 7.5 Kubota Onan fired right up. Ran it for a few hours til 1 AM, and figured no sense running it all night mostly for Fridge and Freezer. So, shut off all lights I didn't want to come on in the middle of the nigh IF the power returned. Returned to a dark house and went to bed. I had left my adjustable bed in an unsually high position! It was raining and I didn't want to go out and start the Diesel so I could lower my Bed.
It is nice to have UPS devices that can be shut down and repowered.
I'm used to older UPSs, that lock out (AC wise) like your older one..... I'm not sure how common it is for newer UPS to be able to restart w/o grid-AC.
There is a lot I like about having a good quality DC/AC inverter supported by a large battery bank.
Rgds, D.