Program regulator for start or house batteries.

[freshalaska]

With a Lithium house bank and wet cell start bat and using a dc2dc charger from the start to house and alternator regulator wired to the start bat, do I program the smart regulator for the start wet battery or do I program it for the lithium house bank?

[smac999]

The battery it is charging. So lead. The dc to dc would be set to lithuim.

[freshalaska]

Thank you SMAC999
I appreciate your response.

[danno7]

I am offering another thought on the subject that I have done. Have the alternator power the lithium directly, and the dc2dc supply from lithium power to the start battery. This can add a lot of complications, but it does allow a high output alternator to recharge the lithium directly. The dc2dc converters are only good for maybe 20 amps. If you have a 200 amp alternator connected to engine battery and a small dc2dc, it will never be used at even 25 percent of capacity.

As I said, my system has a lot not mentioned here. But is is a way to use all the power of a high output alternator to charge lithium house.