System voltage high P0563 Error Code

[Cradle]

I have a Fieldmaster with Ctek 120s and D240se with a lithium Lifepo4 battery 300A as second battery. The duel battery system was set up at factory and I only replaced the original FEB battery with the lithium. This year I travelled through Simpson Desert and Around Alice Springs. The second battery was charged so well and there was no shortage of power for my rice cooker, induction cooker and water kettle. I did not see this error code when travelling. However, I have not driven the vehicle lately and the second battery got drained almost to 15%, which is the protection level. Main battery was almost normal at 75%. This error came out twice. My AI research came with this advice;

• Lithium low → aggressive bulk charge
• Smartpass opens
• D250SE demands current
• Trickle path allows reverse influence
• Voltage excursion occurs
• P0563
  

Has anyone experienced yellow Engine warning light on the dash connected to System High Voltage? Now, I am thinking of solutions on this issue.

 

[TheDocAUS]

A 300A Lithium battery is a really big battery and it can take a large bulk charge. The CTEK 250SE can only charge the Lithium battery at 20 amps.* I wonder whether there is a mismatch when the Lithium battery is drained like you say.

What is the charging voltage showing on the Electrical screen when the error occurs?

Do you have a battery monitor fitted to both batteries? If yes, what are the graphs showing?

What brand is the 300A Lithium battery? The CTEK system, in the IG, is not designed to charge such a big battery. When driving many kilometers a day that might not matter, but parked up that is a different scenario.

* I have assumed the 250SE is set to a Lithium charging profile for the second battery.

 

[Logsplitter]

I’m no expert, but I’d start by isolating the batteries and charging them separately with a smart charger.


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