Alternator and LiFePo battery question

landyacht318 wrote:
. . . Obviously underhood airflow, and alternator fan rpm have HUGE effects on alternator temperature, as of course does the load, and these are all huge variables on vehicles making direct comparisons without supporting data, and blanket statements devoid of specifics, filled with unknowns, unwise . . .

Useful, realworld info in your post. Thanks. We were tempted to squeeze more out of our 220a alternator with a larger dc to dc charger or a straight charge line, but decided against it. Probably would have been fine for the most part. However, your post would seem to confirm some of the concerns we had with the possibility of extended idling in stalled freeway traffic in 110+ degree heat, while forgetting we had a very high charge load going to our camper batteries.

We've already encountered limitions with our Ram's 220a alternator and 40a dc to dc charger in cold temps. Our Ram recently went into "Battery Saver" mode one 5-10f morning after a night of dry camping (and depleted camper batteries). Turned off our 40a dc to dc charger and the warning went away. Waited an hour or so to get a better charge on our truck batteries, then turned the dc to dc charger back on. All was well again.