pianotuna wrote:
Lynnmor wrote:
I believe that you have the one WFCO converter that ever went into 14.4 mode. :D
As there is no battery involved there is nothing to hold the voltage down. With a battery the voltage won't be 14.4.
I suppose any bigger load would do that adds enough resistance.
The WFCO chooses whether to go to 14.4 when it is turned on and sees what it is facing. A battery that is say 12.1v and so is lower in R will spike to say 13.1 and thus the WFCO go to 14.4v
If the battery is higher in SOC and so is higher in R with say 12.3v, its voltage will spike to say 13.3 when the WFCO is turned on. So the WFCO will go to 13.6v
Since longer thinner wire converter to battery adds to the total R, that makes the WFCO think the battery is higher in R even if it is low, so the WFCO sees 13.3v and stays at 13.6.
You can use shorter fatter wires to reduce R and then maybe the 12.1v battery plus the wires will spike to 13.1 and let the WFCO do 14.4v
Or you can add a battery to the bank, which lowers the R so now the WFCO will see 13.1v.
Or, if it is a 55 amps WFCO that is spiking the small bank too high, you can use a 35 amper instead and maybe it will spike to 13.1 and do 14.4, but of course then it will take longer to do a recharge than the 55 amper would at 14.4.
So it is really about total R that triggers the 14.4 on WFCO start-up.
That means the OP's fans do not have much R so it goes to 14.4. If you add a battery that is enough R to add to the fans' R, then the WFCO should stay at 13.6.
But if it is indeed just about the total R, then you don't need the battery as such, but just more of a load to add to the total R.
I think :)
