Magnum 3000w IC is 125a, I lower the AC input to 13a so it's charging at 100a +/-. I like this setting for ease of timed hold over charging.
Tomorrow I'll have throw a possible hold over charge if I do I'll adjust the AC incoming to 15a and see how it looks. Extra 25a shortens the charge time. It's supposed to rain like the dickens tomorrow but even today with rain and heavy overcast the batteries got to 81% from 68% and watched tv/ dvds good portion of the day.;)
I would do this with my other generator (eu2000i) and charge with the same results, I have set the incoming to 15a but you could hear the generator working hard.