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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Passing 63 amps through a 13 gauge wire also didn't heat it and perhaps TWENTY MILLION GM products used this system. With any AC or DC converter voltage drop will affect design specifications performance.
With intermittent charging the only constraints to AGM charging is to maintain a minimum acceptable amperage, then a 14.4 maximum potential. Potential is voltage BTW.
I would not design an alternator with only internal fans. The airflow is pathetically weak. I spent a lot of money in 1989 building an external fan to use with the 3rd 4th and 6th generation Ford alternators. It reduced the SRE meaning rear case temperature from 280F to 210F fully loaded, ambient temperature around 102F. It was contoured to align with the drive end housing and cost more than $100 to build. It resolves the purple stator in these alternators from charring black.
With intermittent charging the only constraints to AGM charging is to maintain a minimum acceptable amperage, then a 14.4 maximum potential. Potential is voltage BTW.
I would not design an alternator with only internal fans. The airflow is pathetically weak. I spent a lot of money in 1989 building an external fan to use with the 3rd 4th and 6th generation Ford alternators. It reduced the SRE meaning rear case temperature from 280F to 210F fully loaded, ambient temperature around 102F. It was contoured to align with the drive end housing and cost more than $100 to build. It resolves the purple stator in these alternators from charring black.
