Playing with some numbers I have handy, lets compare 230w of panels with MPPT and PWM for amps to the battery.
PWM--- 130w for 8.2a Isc plus 100w for 6.1a Isc = 14.3 amps
MPPT--230w panel reduces to 204w in the sun (panel at 50C) as seen in real life. So INPUT Watts 204 reduced by controller efficiency of 96 percent to 196 OUTPUT watts EDIT this includes any line loss of 1-3 percent, or you can add that to make input watts even less.
Now you take that output and divide by battery voltage to get the amps. Take three cases during the recharge, no change in panel output.
196/13v = 15 amps
196/13.5v = 14.5 amps
196/13.9v= 14.1 amps
So you see what I mean by a "wash" comparing that to the 14.3 amps of the PWM, (which would be a bit less above 13.5v as seen on the IV curve).
So what happens next after you reach Vabs is another story, and depends on the charging profile of the controller. It might stay at Vabs till dark or it might stay at Vabs for 2 hours and then drop to Float of 13.6v, whatever--but that has nothing to do with PWM vs MPPT.
As noted above, in Absorption, the MPPT is in PWM too. And they both will run other loads first before sending the battery any amps left over, so that's the same too.
BTW, you don't usually see the loss in watts by the panel when they show how wonderful MPPT is. They love to talk about the "wasted watts" of the PWM case. Fact is they both have "missing watts" but for different reasons.
