Question about solar and my LiFePo4 batteries
In my Class B Xplorer 230XL I have two 100AH LiFePo4 batteries giving me 200 AHs. While I bought them in June 2019 I have not used them until this spring due to getting multiple myeloma, a blood canc...
Forum Discussion
When controller brings LFP to 14.2-14.6, it must be more than 90% full, you should refer to charging curve for this battery.
Many controllers are poorly suited for LFP. Over 13.6-13.8 they think that battery is in Float, and over 14.x they think that it's past Absorption stage and doesn't need much current. So they don't give out all the available amps unless there are some loads running, in addition to LFP. Turn water pump on and see if current goes up. I found this to be the case with my not very cheap Renogy MPPT 30 controller - though quality of $140 MPPT is probably the same as of $70 PWM.
Many controllers are poorly suited for LFP. Over 13.6-13.8 they think that battery is in Float, and over 14.x they think that it's past Absorption stage and doesn't need much current. So they don't give out all the available amps unless there are some loads running, in addition to LFP. Turn water pump on and see if current goes up. I found this to be the case with my not very cheap Renogy MPPT 30 controller - though quality of $140 MPPT is probably the same as of $70 PWM.
