Forum Discussion
full_mosey
Apr 02, 2018Explorer
Yes, time based charging is best for automatic charging while the bank is being used.
Manually controlled charging will do better because someone is watching the charging as it progresses and can assess the real-time status.
What I do is use the programming capability of my Morningstar SunSaver MPPT 15L solar controller to vary the length of the Absorption stage for the day.
At each sunrise, the controller performs a startup process. One thing it does is note the overnight low Volts(OLV) of the battery.
I use three settings for Abs:
1. OLV < 12.4, Float is cancelled and holds ABS
2. else OLV < 12.6, 4hrs Abs
3. Otherwise, 2hrs Abs.
I can look at a graph to see if I need to take corrective action.
Explained HERE
HTH;
John
Manually controlled charging will do better because someone is watching the charging as it progresses and can assess the real-time status.
What I do is use the programming capability of my Morningstar SunSaver MPPT 15L solar controller to vary the length of the Absorption stage for the day.
At each sunrise, the controller performs a startup process. One thing it does is note the overnight low Volts(OLV) of the battery.
I use three settings for Abs:
1. OLV < 12.4, Float is cancelled and holds ABS
2. else OLV < 12.6, 4hrs Abs
3. Otherwise, 2hrs Abs.
I can look at a graph to see if I need to take corrective action.
Explained HERE
HTH;
John
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