I am killing my battery bank

[Mike90250]

> 3. I think Classic 150 is causing this

Only if you did not configure it properly.
You could have high resistance in the cables which fool any charge controller with the wrong voltage.
You likely don't have enough panels or are using more power than you can harvest. Deficit charging can really pull a bank way down.
Any daytime loads, subtract from your battery charging

[-robw-]

I guess I'm one of the people referred to in "Are you killing your batteries"

Brand new bank of 2 24v strings of CR-305s, and I cannot top it per my refractometer. Best I've done is 1.26 but they're usual at 1.25 (like tonight). And that's charging them lately - hot but sunny days (CL 150 shows 55a max output during sun hours).

2000 watt solar array
Classic shows I sent 338a to bank today
Overnight usage is about 275a
275/338 = 81% which addresses loss accurately for new battery bank and 10ft of 2 awg from Classic to bank and good connectors, so I should be fully charging bank, right?

Wrong

I can't hit 1.275 in these best of (sun) times.

So my question is, I guess, is how high can I go? Absorb is presently at 31v (Crown's recommended equalize) and for 5 hours (I never hit float). Can I go to 31.5? 32? This isn't addressed in sticky but seems to be a solution?

Caveats:
1. Not concerned about off-summer months because 275a is mostly AC.
2. Impractical to add more panels.
3. I think Classic 150 is causing this