I have 6 100w 12v MONO panels wired 3s2p. Panels are tilt-able and can also easily pan to track the sun during the day (manually).
I have 4 new 100Ah Flooded Deep Cycle RV batteries for storage, all wired in parallel for 12v.
I have a 12/24v 40A MPPT Charge Controller to charge the battery bank.
I have a 3000w Pure Sine Wave Inverter connected to the battery bank to supply 115v AC. Using 4/0 AWG 36" cabling for the connection to the battery bank. Seriously considering switching to 24v to cut down on the current. But, would require a new inverter.
Currently, nothing is connected to the LOAD terminals of the MPPT CC.
For testing, I have been running my 14A skill saw, table saw, chopsaw, bandsaw, sawsall, and other tools intermittently during the day. Also, I have run a big freezer and a big refrigerator 24/7.
On a sunny day here in Oregon, the battery bank tops off in 2-4 hours. Then the system stops producing since the batteries are full. Wasted potential storage time.
The rest of the potential charging time for the system is wasted each day because the battery bank is filled early in the day. The system just trickle charges the rest of the day
Would it be safe to say that I could double the battery bank to make more storage? I would not be using more power, but there would be more stored for those days when there is less sun, and therefore, less potential for charging.
Purpose for the system is to provide emergency house lighting, medical equipment power, Microwave, and power refrigerators and freezers when power is out, which happens frequently where we live. We have a generator but there have been been several times where the outage has been long enough that we run out of stored gasoline, and the snow and ice is so bad that we cannot get out to the nearest town. We also do not run the generator at night while sleeping, so lites in the house would be needed.
Where is the balance or how would one calculate that? Any thoughts?
I have 4 new 100Ah Flooded Deep Cycle RV batteries for storage, all wired in parallel for 12v.
I have a 12/24v 40A MPPT Charge Controller to charge the battery bank.
I have a 3000w Pure Sine Wave Inverter connected to the battery bank to supply 115v AC. Using 4/0 AWG 36" cabling for the connection to the battery bank. Seriously considering switching to 24v to cut down on the current. But, would require a new inverter.
Currently, nothing is connected to the LOAD terminals of the MPPT CC.
For testing, I have been running my 14A skill saw, table saw, chopsaw, bandsaw, sawsall, and other tools intermittently during the day. Also, I have run a big freezer and a big refrigerator 24/7.
On a sunny day here in Oregon, the battery bank tops off in 2-4 hours. Then the system stops producing since the batteries are full. Wasted potential storage time.
The rest of the potential charging time for the system is wasted each day because the battery bank is filled early in the day. The system just trickle charges the rest of the day
Would it be safe to say that I could double the battery bank to make more storage? I would not be using more power, but there would be more stored for those days when there is less sun, and therefore, less potential for charging.
Purpose for the system is to provide emergency house lighting, medical equipment power, Microwave, and power refrigerators and freezers when power is out, which happens frequently where we live. We have a generator but there have been been several times where the outage has been long enough that we run out of stored gasoline, and the snow and ice is so bad that we cannot get out to the nearest town. We also do not run the generator at night while sleeping, so lites in the house would be needed.
Where is the balance or how would one calculate that? Any thoughts?