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Question LiFePo battery BIM

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Joe Hogan

RVF Supporter
Joined
Nov 3, 2019
Messages
3,539
Location
Florida
RV Year
2024
RV Make
Newmar
RV Model
Dutch Star 4311
RV Length
43
Chassis
Spartan
Engine
Cummins
TOW/TOAD
2018 Ford Flex
Fulltimer
No
Our Dutchstar has the factory optional LiFePo package. The BIM seems to charge at 13.x volts rather than the expect 14.2V. Also, the BIM remains Bridged when on shore power, but doesn't appear to Bridge/charge house batteries by engine alternator when engine is running.
Been talking with Newmar Service to investigate this. Mark, mobile service, will be here next week.
I am trying to find a wiring diagram specific to the 2024 Dutchstar with this option so I can determine what is the factory specs. The resting LiFePo Voltage appears correct 13.5 or 13.6 and 13.2 for the Chassis batteries.

What brought this to my attention is a depleted house battery when arriving at nightly stop. The charger absorbs many amps limiting our use of other appliances until batteries are done charging.

Thoughts?
 
I don’t have Lithium but had an issue where house batteries not charging on alternator. Thinking it might be BIM being bad, checking voltage from chassis to BIM both running and static was not close to the voltage on chassis batteries. Decided to clean terminals on chassis batteries even though they didn’t look bad and had been cleaned at last annual service, everything showed proper voltage at BIM. Now house batteries charge while driving down the highway.
 

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