Thanks for the report.
My own data is less scientific. I pretty much watch my amp hour counter and voltmeter like a hawk, and my overnight loads are pretty consistent.
I'm not always awake to check morning voltage but my monitor does record minimum voltage and I usually reset that daily.
I've close to 200 deep cycles on mY group27 Northstar AGM rated at 90AH.
When I am at the 45AH from full mark about 6 hours into the discharge, voltage is in the 12.1v range under a 3 to 4.5 amp load and bounces back practically instantly when I shut down tv and laptop, upto 12.2x under a 0.7 amp load.
I think this battery's capacity is underrated.
What is noticeable is whether my solar was able to hold absorption voltage long enough to taper to 0.4 amps, or whether it was only 1.2 amps when the sun got too low in the sky to hold ABSV/Vabs.
Voltage under load is lower when it cannot, or after 4 solar only low and slow recharges from 50% even when it achieves that taper to 0.4a at 14.4v.
But give this battery a 40 amp meanwell charge or 75+ amps from my alternator and the voltage under load impressiveness is back.
A battery which requires the occasional high Amp recharge is both a curse and a blessing. Great as there is no fear of packing in the amps at as high a rate as possible, curse because solar only recharges to 50% is not enough to keep the battery happy, even when amps taper to the 0.5% of capacity at Vabs/ABSV.
I am going to continue to work this battery hard and heavy.
