Rogue MPPT, 490W and charging mysteries

lorelec wrote:

Regarding the equalize attempt: it would be good to know how much current the controller was pushing into the battery. Should have no problem getting a small battery to 15.5v with 490w. Have you tried equalizing a battery that's not on the verge of being put on the scrap heap? Does the percent counter start counting up, or does it just stay at 0%?

Secondly, is the battery temp sensor connected? If so, it may be altering the absorb setpoint if the batteries are warmer than 25C.

... Not sure why it's trying to do (ABS) 14.4v at *both* 14.6 and 14.8, though.

Let's forget about old starter FLA. I expected it to die, and glad that it is still charging and runs the truck. I don't remember the EQ current. Temps were ~24C, no sensor connected. I tend to agree with the member quoted above on AGM conditioning - which may be applicable to my FLA starter as well - old sulfated battery won't accept more than 14.5-15.0V and it will take time before it accepts 15.5V.

Temps are not the problem - but I don't like how Tcomp works in this controller. Once again - there is one starter FLA and 3 coach AGM. I didn't care much about starter, but followed all the rules with AGMs. And have a gut feeling that default temperature is 18-20C, not 25C as the Rogue manual says. Why I think so:
1) ABS on one AGM didn't go over 14.4 - though this is weird, I did try 14.8 setpoint with same result. Not enough power in the evening to keep 14.6? The it would've switched to MPPT, like it normally does.
2) 2 other AGM went into ABS yesterday evening, and into Float this morning - unlike the 1st AGM, these 2 successfully reached ABS current 1%C. V FL was odd, though:
12C, V FL=13.7
18C, V FL=13.6 (default)
22C, V FL=13.5
25C, V FL=13.4

I kept batts in the shade so it didn't go over 25C.

And yet another trick of the Rogue. I'm still learning, my apologies.
After I've reached the FL on 2 AGM, I put on charge the other one that was tested/discharged previously. Rested overnight it had Voc=12.3, or ~53% SOC. Started at noon with 24A - 2*245W series panels are tilted less than optimal, propped on the palm suomps temporarily. Then it dropped to 18A, alright. Then suddenly MPPT 4A at 13something V - what the heck, the sun is still high, why 4A from 490W? Aha, one panel is shading another one by 10%. When panels are in series, weird stuff may happen, alright. Lifted the shaded panel up, no more shade, controller clicks and goes into ABS 14.6 that instantly drops to 14.5 (Tcomp default 18C, remember?), and the current is 12A. Lower the panel back on the stump, 10% shade again, BUT still 14.5V ABS and 12A. So I've somehow nudged the Rogue into ABS. If I didn't mess with the panel, it would probably remain "frozen" in this weird 4A MPPT in bright sun.