D250sa With Solar Panel - Need A Solar / Battery Monitor

[gfranko10]

Hi, please may I bring this back to ask for some assistance? I have a CTEK D250SA with a YUASA LB L36-100 and Sargent ac50 control unit and have recently purchased a 200W solar panel, Victron 75/15 MPPT and the IP65 smart shunt. I have created a wiring diagram attached after reading all the material on the forums here. Although, I am a little confused with the smart shunt wiring instructions, that displays the shunt wired to loads and chargers and not ground. I also plan to connect the aux cable from the smart shunt to the CTEK to monitor the starter battery. Which I am unsure if this will work? Or will I require a negative cable from the starter battery to the LB negative terminal?

Any advice would be greatly appreciated. Thank you.

My understanding:

Victron Instructions:


Starter battery connection:

 

[roadtripper]

Keep in mind that the Victron Wiring diagrams are made to be suitable for large fibreglass RVs and boats as well.

In a T6/6.1 you use the chassis as a common ground - so in the Victron instructions the black negative cable between the shunt and the loads is usually your van body.

 

[Sim60]

Hi, please may I bring this back to ask for some assistance? I have a CTEK D250SA with a YUASA LB L36-100 and Sargent ac50 control unit and have recently purchased a 200W solar panel, Victron 75/15 MPPT and the IP65 smart shunt. I have created a wiring diagram attached after reading all the material on the forums here. Although, I am a little confused with the smart shunt wiring instructions, that displays the shunt wired to loads and chargers and not ground. I also plan to connect the aux cable from the smart shunt to the CTEK to monitor the starter battery. Which I am unsure if this will work? Or will I require a negative cable from the starter battery to the LB negative terminal?

Any advice would be greatly appreciated. Thank you.

My understanding:
View attachment 252522
Victron Instructions:
View attachment 252523

Starter battery connection:

View attachment 252524

No - this is not correct.
The only connection to the LB negative is the Victron shunt.
The CTEK negative and the MPPT negative connect to GND ( or the other side of the shunt which you have shown grounded). These are both ‘chargers’ in Victron speak.

Simon

 

[gfranko10]

Thank you @Sim60 @roadtripper, that makes sense now.