All batteries replaced and software updated but still losing 10% every 2 days when van is not in use

[WelshGas]

I also have the PHEV but did not experienced the heater yet. Let me ask 3 questions: is the corner gap below the fridge the only place for the heat to come out? regarding the exhaust coming out I assume this is quite toxic to breathe while sleeping....? while in camping connected to mains... is there also a fuel consumption?

I'm not sure you understand how the Parking Heater, petrol or diesel, works. It is basically a heat exchanger. On one side is the fuel burner that takes air from outside the van and exhausts the combustion gases outside the van. On the other side of the heat exchanger air is sucked in via a vent inside the van, heated and vented back into the van. The 2 streams of air never mix so you won't be breathing exhaust fumes.
The Heater manufacturers state fuel consumption is about 0.3 L/hr on maximum. In normal use about 0.15 L/hr.

 

[Jerrywho]

I'm not sure you understand how the Parking Heater, petrol or diesel, works. It is basically a heat exchanger. On one side is the fuel burner that takes air from outside the van and exhausts the combustion gases outside the van. On the other side of the heat exchanger air is sucked in via a vent inside the van, heated and vented back into the van. The 2 streams of air never mix so you won't be breathing exhaust fumes.
The Heater manufacturers state fuel consumption is about 0.3 L/hr on maximum. In normal use about 0.15 L/hr.

Thank you WelshGas!! I pretty much understand now . So I assume that even when connected to mains fuel consumption remains but you omit leisure battery consumption from vent. Am I correct?

 

[WelshGas]

Thank you WelshGas!! I pretty much understand now . So I assume that even when connected to mains fuel consumption remains but you omit leisure battery consumption from vent. Am I correct?

All the caming equipment runs from the Leisure Batteries but if on Mains Hookup you are charging the batteries as you use them.
The Parking Heater only uses high amps when starting to heat the glow plug to start the fuel burn. Once running it uses very little.
On my T5.1 ran the Fridge and Parking Heater + lights and charging phone and ipad for 72 hrs off the Leisure Batteries in Knordkapp at -10c. That was on AGM batteries. Voltage was 12.2v at the end.

 

[Jerrywho]

All the caming equipment runs from the Leisure Batteries but if on Mains Hookup you are charging the batteries as you use them.
The Parking Heater only uses high amps when starting to heat the glow plug to start the fuel burn. Once running it uses very little.
On my T5.1 ran the Fridge and Parking Heater + lights and charging phone and ipad for 72 hrs off the Leisure Batteries in Knordkapp at -10c. That was on AGM batteries. Voltage was 12.2v at the end.

Thank you Welshgas for your accurate answers!