A follow up for some of the takeaways of the previous post (https://adam-s.ca/understanding-fridge-temperature/). Repeating the experiment in a different part of the fridge showed some cleaner results. In-fact there were oscillations present at a much more realistic interval (30min). This was very surprising as this is a mechanical fridge with a thermostat and the oscillating period was dead on 30min almost as if it was computerized.
The temperature logger was able to go for 4.5 days on the external battery bank.
