If I may pontificate please. Just a few 'facts', OK, there MY facts, about batteries, amps and charging systems.
No matter how big your alternator is, it only flows enough amps to meet your demands. (or burns up)
Different types of Batts., even of the same size, have different charging rates i,e, lead acid batts. might
take 30 amps or less when charging, where a gel-cell might take 45 amps, and a glass-mat takes 70. I say 'take', because you can't force feed a battery. And all batts reduce that charging rate as they near full charge.
So if you are charging 3 glass mat batts that are all, over 30% drained you could
pull 210 amps of charge for half an hour or so.
If you are charging 3 lead acid batts from even 40% drained they would pull 90 amps for an hour or so than taper off untill full charge.
YMMV, i kinda made up the numbers to make the point.
Big amps is a selling point but rarely used, unless you're running big glass mat batts or an arc welder. In either case, at 250 amps, the engine would have to be running at 3000 rpm or the torque of the alternator would spin the belt, or would kill the engine.
180 amps is plenty of poop for recharging and running refers. The little extra voltage that Toro is getting is nice for
pushing a little more oomph in his accessories.
I welcome all your inferior comments and silly questions
Sorry for the Jack Toro, I meant well
