CarlSwart

Hi, Can you post pictures? Make and model numbers?

@SilverNodashi I have a cheap Chinese portable generator, like most of the GRIP/Ryobi/Stramm/<any other cheap brand> generators are. The generator does have an AVR (Automatic Voltage Regulator) build in. When I run my house from the generator, my APC UPSes, are very happy with the generator input. The APC UpSes, will maybe once or twice in a 2 - 3 hour period report an under voltage or an over voltage. I also have Tescom UPSes. The Tescom UPSes are however NOT VERY HAPPY to run from the generator feed. They will run but will constantly complain about under or over voltage. (Sad part is I bought them because they were rated "generator compatible") I also have access to another, 2 portable generators. One being another, older, Chinese cheapie and then a decent Honda powered, Sincro generator. If I use the above 2 generators, to run the same UPSes, connected in my house at the same locations, I do not encouter the problems as I described above .... strange .... indeed!!! Now you may ask, how does this relate to you and your Axpert, well ... not directly, I suppose, however I think it is pertinent that you test everything. Your problem maybe the firmware, but it would be best to check all components involved in your system.

I may be completely wrong, but in my resent battery research I came across the "VISION 6FM100P-X 12V 100Ah(10hr)". I am speculating here, but I think, the PSS 6FM100 12V100AH battery is exactly this battery but branded as PSS. Herewith the datasheet for the 6FM100P-X VISION 100Ah 12V.pdf Hope it helps.