I have been away from the forum for quite some time. We are totally off grid in New Mexico. I have been having some troubles with our system for a little while now & the last 2 nights the trouble got much worse.
Disregard my signature - need to update the info!
Our set up consists of:
8 - 90 watt monocrystaline panels
Xantrex 60 amp controller
8 - AGM 100ah batteries
Xantrex 1000 watt sine wave inverter
1000 watt cheapie inverter
8awg to the panels
When I upgraded the system last winter to what it currently is I was overwhelmed at the increase of power we had. We had much more than we could use. Just before the monsoon season arrived I noticed a decrease in power & once the rains came we were in trouble. I was only seeing at most 10 amps when the sun did come out, not good. Once the monsoon passed I expected to have a jump in power but it didn't happen.
I had a friend stop by who said it is the charge controller that is the problem but I am not sure. Another friend was just here & while he was here we did some troubleshooting. We decided to hard wire the panels to the batteries directly to see what the results would be under supervision. The 8 batteries never went above 12.9v & the amperage never rose above 9 amps (panels are rated at 5.13 amp). We then started to test the batteries & one looks to be shot for sure, reads 12.0 after a charge. There are 3 others that are reading 12.5 after charging & the other 4 were 12.75. Next we hooked up the 4 good batteries to the panels & got 15volts after some time.
Last night we had the 4 batteries hooked up to the system & they were charged. The charge controller was still disconnected. At dusk the battery voltage dropped like a rock. Was that because the controller was not connected? Can the panels draw power when the are not producing? I hooked up the controller & let the batteries get a fresh charge today.
We saw a good charge today & I was working online when maybe 3 hours after dark again, a quick a serious drop in power sent the inverters into a frenzy along with myself! So now this is where I am at (with generator running)
I have a controller that is only showing 10 amps & 130 watts of power at most at high noon. I am having quick discharges for no reason. My batteries are all less than 2 years old which really bothers me....
Please any suggestions as to what the heck is going on or what I can do to figure out a solution??