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Rich Solar 40A MPPT controller and SOC with user defined LiFePo4 battery?

Mr.Michael

New Member
Joined
Feb 2, 2020
Messages
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I set up my new Rich Solar 40A MPPT controller using the software and a serial cable. My battery is a 60Ah battery and I set the controller to user defined battery, copied all settings from the LI profile except that I set the capacity to 60Ah. A read test confirms it is set to 60Ah. Problem:
Charged battery to 100%. I put a small load of 2.77A on to the controller, let it run for about 7 hours. The controller shows under "Daily" that I used 17Ah. So far so good! However, the SOC still shows 100% but really should be about at 70%. Is there a way to make it work? Here my settings:

[config]
Type=User
Over Volt.Disconnect Volt.(V)=16.00
Equilibrium Charging Volt.(V)=14.40
Boost Charging Volt.(V)=14.40
Float charging Volt.(V)=14.40
Boost Recon.Charg.Volt.(V)=13.20
Low Volt.Reconnect Volt.(V)=12.60
Under Vol.Warning Volt.(V)=12.10
Low Volt.Disconnect Volt.(V)=11.10
Discharging Limit Volt.(V)=10.60
Rated voltage Leval=12V
Charging Mode=Volt.Comp.
Equalizing Change Interval(day)=0
Equilibrium Duration(m)=0
Boost Duraton(m)=0
Temp.Cm\ompensation Coefficient(mV/?/2V)=-3
Battery Capacity(Ah)=060
LVD Delay Time(s)=5
Battery Charge(%)=100
Battery Dischage(%)=30
SAVE DATA=2/2/2020 21:36:48
17Ah-used.JPG
 
Last edited:
I addition, the attached image shows another discrepancy. The controller reports 17Ah used, battery voltage is 13.4. So if we calculate 17 times 13.4V = 227.8Wh we are missing something. The discharge KWh rating should read 0.228 KWh - does that also not work?
 
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