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3.6L ESS Dual Battery Consolidated Information

ALRUI

Well-Known Member
First Name
Arnold
Joined
May 18, 2018
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Location
Murphy, NC
Vehicle(s)
2018 JLU Sahara, 2003 F150 S-Crew FX4, Others
I removed some of your post just for brevity of the quote. My opinion is you should replace both batteries, or do as I (and others) have done and route the cables to just run off one new H6 replacement and ignore the mini battery. There are forum threads on how to do this.
He should do a load test on the batteries not just a voltage check and he'll probably find one or both batts bad.
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