Here is the answer from our responsible department:
There is no general rule - it depends on several factors, for example the ambient temperature and/or the situation in which the device is used (e.g. sitting in an enclosure in a camper van without much ventilation will result in higher consumption).
Here are some test results from a Camper Van tester:

- Ambient temperature 30 degrees Celsius :
Consumption of approx. 32 Ah (384 Wh) per day (24h).

- Ambient temperature 20-23 degrees Celsius :
Consumption of approx. 19 Ah (228 Wh) per day (24h).

- Ambient temperature 10-13 degrees Celsius :
Consumption of approx. 13 Ah (156 Wh) per day (24h).

Regarding your question, we received the following answer from the supplier:
We do not know that. In this case, please contact WAECO/MOBICOOL customer service.

The best option would be to check directly with the manufacturer.
I am very sorry that I cannot help you.