Umbau (T6.1 California Ocean MJ2021) auf 2*Lithium 105AH (LiFePo4)

[jmstockholm]

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Thanks a lot for the effort!

[jmstockholm]

@Tim_Jochen hmm, I wired the dc/dc charger, completely removed the VW original battery shunts and hooked up the LiFePo4 batteries as well as the starter battery and connected shore power, but can't detect any increased voltage from the charger on any of the fuses (the dcdc doesn't kick in either as incoming voltage is to low).

 

The CU battery display is reporting 100% charge and reports the voltage from the starter battery (12.7 if I remember correctly while the LiFePo4 is at 13.1). My theory is that as the starter battery is 100% charged thus the CU might not give the charger signal to start, but I don't know.  That leaves me a bit stuck as I can't identify the fuse by measuring the voltage increase over the fuses while on shore power.

 

Well, I might have to mount everything, drive for a while and then dismount the drivers seat etc. and have a go at it again.

 

But, do you have any more information that might be useful, if my theory is correct and anything else I could do find the fuse? I have my hands on the circuit drawings from this forum, but unfortunately they don't cover the endpoint of the charger output... 

Bearbeitet vor 44 Minuten von jmstockholm