Just to say thanks to those who took the time to give me such interesting answers. I have now contacted the company that sold us the batteries and they have contacted the supplier. So now I am waiting for the "official answer" before continuing.
Have fun
Neill
Hello SparWeb.
Do I understand you correct? That you are seeing your "sag" even with nothing connected? My loss during the night is (I think) because I have the 20W connected. The test I did on the fully loaded battery showed that it lost nothing with nothing connected even after 24 hours and...
Hello Again SparWeb.
The system has the two solar panels. They are mounted close to vertical so that snow and ice fall off as fast as possible. The photo was taken after a night of snow with temperatures below freezing. Each panel has a rating of 245W. They receive sunlight from sunrise to...
Hello SparWeb,
Thank you for taking the time to answer me.
Between the solar panels and the battery bank we have a charge controller - Solarix MPPT 2010 (http://www.steca.com/index.php?Solarix-MPPT--MPPT-1010--MPPT-2010537c9a802b50e). This controller has an internal temperature measurement and...
Just a note on a test I am running today.
We had a fully charged AGM battery on the shelf at 19°C. It showed 12.90V.
I took it outside and sat it in the snow. The air temperature is 0°C.
7 hours later it is still showing 12.90V.
I was expecting to see a change in voltage based on the...
@Bill. Thank you for the suggestion about subtracting the power being drawn from the current being put back in. Unfortunately we have no way of measuring the power being supplied by the PV system. With the system running at 20W, we do not want to start adding measuring systems with 1-2W...
Hello!
We have built a communications repeater station and it has been working for over 18 months.
It is set at 1700 meters in the Alps and supplies Internet and telephone services for a village and a few ski lifts...
