AGM Battery Charging with Solar
This is my first attempt ever at solar so I'm learning as I go. I've recently installed two 100 watt polycrystalline panels on the roof of my RV. I have a relatively new bank of AGM deep cycle 12 V...
Forum Discussion
Hi 2oldman,
I have but 256 watts of solar. My battery banks are in two 278 amp-hour banks. While in storage on Dec 21 about 17 amp-hours are pumped back into the battery bank.
The OP has only 300 amp-hours--so if he is a "week ender" 200 watts may yield a solar harvest of 800 watt-hours or about 58 amp-hours per (perfect) solar day.
Assuming 5 days between trips, there should be no problem returning the bank to fully charged. The biggest issue is getting to a high enough voltage.
AGM's wish to be "woken up", in general--so that is why I suggested crowding the higher side of the recommended cycling voltage, given the barely big enough solar wattage. I've allowed for non tilting fixed installation in the math above.
I have but 256 watts of solar. My battery banks are in two 278 amp-hour banks. While in storage on Dec 21 about 17 amp-hours are pumped back into the battery bank.
The OP has only 300 amp-hours--so if he is a "week ender" 200 watts may yield a solar harvest of 800 watt-hours or about 58 amp-hours per (perfect) solar day.
Assuming 5 days between trips, there should be no problem returning the bank to fully charged. The biggest issue is getting to a high enough voltage.
AGM's wish to be "woken up", in general--so that is why I suggested crowding the higher side of the recommended cycling voltage, given the barely big enough solar wattage. I've allowed for non tilting fixed installation in the math above.
