westend wrote:
red31 wrote:
different sg from different battery makers or different batteries will yield different voltage @ the same temp.
x2
I wouldn't be concerned with a voltage of 12.6 in the morning. I sometimes average 12.0 or even lower. As soon as sun hits the solar panel, the voltage is rising. In a perfect world, batteries should only be drawn down to an 80% level for most efficient use. I may increase my battery capacity so that I can get close to 80%.
Just means lugging around extra weight of AHs you will never use (50-80) IMO only good reason for more batteries is to keep the inverter from alarming off at 11v when you make your morning toast.