Battery discharge question
We have a 2014 27ft fb International with a 100w solar panel that will bring up two newly replaced group 24s to 12.5v according to the See-Level monitor by the end of a sunny day. However by the next morning the monitor normally reads in the mid to high 11s, e.g. 11.5-11.9.
When the batteries were replaced under warranty the dealer allegedly checked for shorts that would draw down the batteries and found none, and attributed the dead batteries to simply being bad, old or??? We have the normal power-suckers, CO2 monitor, fridge, in addition to a power awning with a "brain" that is drawing power whenever the rig is in the "use" mode. We are very conservative and do not run the furnace at night, turn off the water pump, sound system's main power, and burn no lights.
Given we have read that one should not allow the batteries to discharge more than 50% for fear of ruining the batteries (some say 40%), and considering the conversion table that has been posted to the forums says a battery reading 11.75 is at 30% state of charge, do we have a problem, or may I be reading the table incorrectly?
"don't let life get in the way of living"