Forum Discussion

unsavory's avatar
unsavory
Explorer
Jan 29, 2020

Dual batteries, DC to DC chargers, isolators, AGM... HELP!

Apologies for the long post, but I've been super impressed with the technical knowledge I've seen in on this forum and am hoping someone might be able to help. I own a 2019 Jeep Wrangler, and have ...
time2roll's avatar
time2roll
Nomad
Jan 31, 2020
unsavory wrote:
NRALIFR wrote:
I think (hope) LittleBill meant “Put the output of the DC-DC charger on the main lugs of the secondary battery”
Now I'm even more confused. How can I charge the secondary battery if the input and output are the same? =)
The DC-DC charger will have power input connection and power output connection.
Connect the input to the start battery. Connect the output to the accessory battery.
Remove the other charge control relay.

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