Couple of questions about DC-Dc charging
I've been thinking about adding a DC-DC charger now that I've added 400 amp hours of AGM batteries. There are lots of useful posts but I haven't run into a couple of things I'm curious about. One ...
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The solar controller can be set for FLA to get a higher voltage than 14.4 since your AGMs can take up to 14.9 ok. (except in hot weather with no temp comp, you can do your own temp comp by choosing the lower voltage setting.)
You can select the higher voltage on the DC-Dc too and match what the solar is at. You do not have to pick "AGM" settings when those AGMs specify a higher voltage than some other AGMs.
You do have to watch that the solar and DC-DC and gen charging if any do not exceed 120a when they add their amps. If they did you would have to shut down the gen or the solar since the DC-DC will keep on when the truck is running.
You may know this, and it was just the wording, but that 30a charging spec on a 100AH AGM is not what it will draw--it can accept more, it is just not good for it to do so. What it gets depends on what the charger can do and what it can accept at the SOC it is at and the charger's voltage.
You can select the higher voltage on the DC-Dc too and match what the solar is at. You do not have to pick "AGM" settings when those AGMs specify a higher voltage than some other AGMs.
You do have to watch that the solar and DC-DC and gen charging if any do not exceed 120a when they add their amps. If they did you would have to shut down the gen or the solar since the DC-DC will keep on when the truck is running.
You may know this, and it was just the wording, but that 30a charging spec on a 100AH AGM is not what it will draw--it can accept more, it is just not good for it to do so. What it gets depends on what the charger can do and what it can accept at the SOC it is at and the charger's voltage.
