On 2025-03-22 02:26, Michael Geddes wrote:
How are we going with this investigation?
Good question. I've been quiet while I progressed the 12v theory. Currently the code only tracks average 12v, so I implemented code to also record the lowest 12v observed. This value is then reported as an MQTT metric, and also log entries are created every time it reaches a new low. I observed this for a couple of weeks, and saw 12v dropping below 11.8 while the average was still up at 12.6 or more: With normal OVMS only the green line's metrics are reported. The yellow one is what I've added. I then replaced the conventional lead acid with a new AGM, to benefit from its low internal resistance. The difference can be seen clearly. The change happened on 12th March. Since I've been using the AGM I haven't experienced a dashboard error. It's early days of course; time will tell. Since the tracking of lowest 12v seems to be useful, I plan to create a PR for this part. Chris
