You aren’t alone, yarddog.
We had a similar incident here during a power outage last winter. Genny doesn’t like the cold, battery starter low on charge, all the other chargers and batteries were low.
My husband brought the generator inside to sit by the woodstove and I can’t recall what he did with the other infrastructure. Perhaps he used one of the vehicles. He had everything up and running within a few hours, though.
We try to stay on top of things, but it is easy to forget and become lax.
Yes, becoming complacent is the easiest thing in the world.