Charge controller recommendations
I have a small solar charging system consisting of two 12v 75w panels wired in series and a failing cheap MPPT charge controller. I may be acquiring another identical panel too. I'm currently leanin...
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It may still have an impact on a charge controller (CC) that has fixed time limit. If generator/converter is run at sunrise (before solar production initiates) then once solar starts, CC may go directly into absorption, skipping bulk.
Another reason why not to put CC and converter on same cable is because the mppt CC will have charge reduction. The OP's 6 awg cable may have 20 mohm resistance. If the converter charge is 45A, then there's a 45A * 20 mohm = 0.9V cable drop. The CC is now seeing battery voltage plus cable drop = 12.5V + 0.9V = 13.4V. While a pwm CC will not be affected, the mppt CC will lose much, if not all of its advantage.
Sal
Another reason why not to put CC and converter on same cable is because the mppt CC will have charge reduction. The OP's 6 awg cable may have 20 mohm resistance. If the converter charge is 45A, then there's a 45A * 20 mohm = 0.9V cable drop. The CC is now seeing battery voltage plus cable drop = 12.5V + 0.9V = 13.4V. While a pwm CC will not be affected, the mppt CC will lose much, if not all of its advantage.
Sal
smkettner wrote:
No effect on my Morningstar as it will hold absorption for the programmed time.
Not sure in all practical use this would be a big deal anyway.
