Question on Number of Solar Panels
I have a 24'stationary travel trailer that I want to install solar on. I plan on using 2 GC-2 batteries (230ah)in series to provide 12 volts with 230 AH, which I know only 40-50% of that is usable. Be...
Forum Discussion
Roy has good advice.
One thing I will add, with good quality 6V batteries you can discharge them down to 70 or 80 DOD (20-30%SOC) hundreds of times before they will loose noticeable capacity. I've done that for a decade or more on them, hundreds of discharges. That's what they are rated for and designed for.,
Now, below 20% SOC life drops drastically. So if your going to use that capacity, you do need a good way to actually determine SOC. Trimetric or something similar.
Course discharged that deep they will take a long time to charge, but at least that's an option when you end up with many cloudy days in a row and don't want to fire the generator etc.
And you do need to get them back up to 90% or so within a reasonable period of time (Days??)
One thing I will add, with good quality 6V batteries you can discharge them down to 70 or 80 DOD (20-30%SOC) hundreds of times before they will loose noticeable capacity. I've done that for a decade or more on them, hundreds of discharges. That's what they are rated for and designed for.,
Now, below 20% SOC life drops drastically. So if your going to use that capacity, you do need a good way to actually determine SOC. Trimetric or something similar.
Course discharged that deep they will take a long time to charge, but at least that's an option when you end up with many cloudy days in a row and don't want to fire the generator etc.
And you do need to get them back up to 90% or so within a reasonable period of time (Days??)
