Just for future info:
The value to enter to prevent the dongle from sleeping is: 65535
Enter into: Parameter Settings -> Cell Characteristics -> Sleep Waiting Time -> [65535]
Many may find this Victron Blog article useful regarding Smart Sense and temperature sensing in general: https://www.victronenergy.com/blog/2018/03/22/voltage-temperature-sense-for-solar-chargers/
The article also states:
My understanding of the limitation of the MPPT inbuilt temperature...
Can you provide a substantive link to the optional external sensor you mention?
The Victron Smart Sense manual makes no reference to such a peripheral: https://www.victronenergy.com/upload/documents/Smart_Battery_Sense/Smart_Battery_Sense_Manual-en.pdf
The Victron Smart Battery Sense has no...