question

@SteveT

Are they these generic GC2's? https://www.napaonline.com/en/p/BAT8144?impressionRank=22

If so, I use clones of them, and these my shunt settings (for 48V)..

You could raise Tail a little if you have short days or poor solar (so you mightn't reach it), say up to 1%. The 'true' Peukert of mine is 1.16, but I use 1.10 because it seems to work better at my lowish loads. The low 87% CEF is my summer setting (Pb's aren't efficient topping off a shallow discharge), but maybe 91% in winter. By all means tune them to suit yourself, but these will be better than the all-encompassing defaults.

I don't look at V much, Amps they can accept under charge is more important. These batts are quite reactive as Pbs go, and I find that 7A at Absorb V is 99.0% charged (and a good place to end Abs and drop to Float). In Float, that's my 0.6% (~1.3A), and then they're 100% SOC.

My charge settings (in your 12V lingo) are 14.4V Abs, 13.6V Float and -25mV/degC TempComp.

Mine are daily cyclers, not stored. But if they were, I'd give them a charge dose every coupla weeks. Electrolyte stratification and sulphation your enemies. They'll appreciate a little exercise, hey..

Completely agree with JohnC on this and as he says once you have "lived" with your system for a while you will get to know it and make small changes to optimise it for how you use it.