Lithium battery alternator charging.
I was thinking about going ahead and upgrading my house batteries with drop in lithium batteries, not sure now. One advantage of the batteries is they have low resistance and can charge quickly due...
Forum Discussion
otrfun wrote:
There's always lots of discussion about the potential dangers of overloading an alternator by direct-charging house batteries. Interesting to note that Larry at Lifeblue Batteries (and Starlight Solar??) said he's installed hundreds of alternator/house battery charging systems through the years using only a battery isolator. In all these installs he said he's never witnessed or had anyone report an alternator failure. Who knows, maybe this whole overloading an alternator thing is akin to many discussions about payload. Yes, with any given scenario the sky can fall, but how often does it?
Nice overkill on the wiring. Well done.
Typically the wire for charging is only #8. Typically, the alternator "sees" the starter battery and tappers the out put quite quickly. Typically there is a 60 amp fuse in the charging circuit. (at least for Ford).
So the alternator is unlikely to fail.
What *is* a concern is the alternator feeding too much voltage to the LI and that might cause the bms to shut down. And that's why the dc to DC charge needs to be in place.
