Need Solar Guru Help!
This is my system... 570w solar panels (parallel) ?2 100ah BB lithium (parallel) (12v) Victron smartsar 100/50 controller Renogy battery monitor Renogy 2000w inverter Victron goes through bu...
Forum Discussion
Many of the MPPT charge controllers are designed to have several panels in series, hopefully they are the same watt rating panels? So one I have now is rated at 150 to 450 volts input, and I have 2 KW of 250 watt panels for my house, and the plan is 8 each 33 volt in series, and 8 amps. Output can be 48 volts in my case, or 12 volts in your case.
I would check the panels and charge controller input limits, and see if you could wire them in series, there will be less voltage drop into the charge controller. It seems to be working normally. Your RV is drawing about 1.8 amps to run things like the LP detector, refrigerator, and so on. The battery is getting about 2 amps, the RV is using 2 amps, the total of the solar output is about 2 amps because the battery is mostly full.
Now if your battery was reaching 12 volts or less by morning, then ask what is wrong. If it is 12.5 volts, everything is fine.
If you use more than about 50% of your battery power each night, then I would expect it to stay in the absorption charge rate for a few hours each morning. But if you only use 25%, then it will quickly top off the battery, like what you are seeing.
I think everything is fine.
Fred.
I would check the panels and charge controller input limits, and see if you could wire them in series, there will be less voltage drop into the charge controller. It seems to be working normally. Your RV is drawing about 1.8 amps to run things like the LP detector, refrigerator, and so on. The battery is getting about 2 amps, the RV is using 2 amps, the total of the solar output is about 2 amps because the battery is mostly full.
Now if your battery was reaching 12 volts or less by morning, then ask what is wrong. If it is 12.5 volts, everything is fine.
If you use more than about 50% of your battery power each night, then I would expect it to stay in the absorption charge rate for a few hours each morning. But if you only use 25%, then it will quickly top off the battery, like what you are seeing.
I think everything is fine.
Fred.
