How Much Solar ? First Hand Report
Just got set up here in Quartzsite, two 100 watt solar panels on my receiver hitch mounted polar mount, moving it 3 times during the day. Panes were partly shaded by an old power pole till 9 am, then...
Forum Discussion
Hi BFL13,
How does the controller know to "back off"? The only measurement it can check is voltage. The controller doesn't know if it is charging 1000 amp-hours or 10 amp-hours of battery bank.
It may be that absorption voltage has a higher voltage set point (or can be so adjusted) in a solar charge controller--but if is not then it would seem logical to me that the set point would default to 80 to 85% state of charge, just as if it were a converter doing the job.
How does the controller know to "back off"? The only measurement it can check is voltage. The controller doesn't know if it is charging 1000 amp-hours or 10 amp-hours of battery bank.
It may be that absorption voltage has a higher voltage set point (or can be so adjusted) in a solar charge controller--but if is not then it would seem logical to me that the set point would default to 80 to 85% state of charge, just as if it were a converter doing the job.
