Automatic, smart battery charger? , part 2
This is a continuation/update of a now two year old post. Thanks to the Raspberry Pi 3b, I have detailed logs per minute of information. Now I have a lengthy menu of graphs to review. This menu ...
Forum Discussion
Good Morning;
Here is another key graph. This graph shows the 10 day trend for battery Voltage. The Voltage is measured via the Remote Temperature Sensor(RTS) connected to the solar controller. The Raspberry Pi 3B collects this information at one minute intervals. There are 1440 daily recordings.
The story today is that I have not checked anything since 4/13 and I want to know if anything unusual happened.
Red line(Min) - The first nine days are history, the last date is the condition as-of today's date-time in the title of the graph. I see the Red line stayed around 12.6V. That is good and normal.
Lt Blue line(Max) - It looks like there is a trend downward. My analysis is that the battery temperature has been rising and the controller is responding to the RTS and lowering the ABS set-point. Maybe good.
Green line - This also shows a decline but then there is a day above 14V. This tells me that the RTS Volts were above 14V for 360 minutes, or 25% of the time(1440/4). It appears that the controller is playing catch up as it should do. I look outside and see we are at full sun so we will have a splendid solar day. All is good and normal. :)
HTH
John
Here is another key graph. This graph shows the 10 day trend for battery Voltage. The Voltage is measured via the Remote Temperature Sensor(RTS) connected to the solar controller. The Raspberry Pi 3B collects this information at one minute intervals. There are 1440 daily recordings.
The story today is that I have not checked anything since 4/13 and I want to know if anything unusual happened.
Red line(Min) - The first nine days are history, the last date is the condition as-of today's date-time in the title of the graph. I see the Red line stayed around 12.6V. That is good and normal.
Lt Blue line(Max) - It looks like there is a trend downward. My analysis is that the battery temperature has been rising and the controller is responding to the RTS and lowering the ABS set-point. Maybe good.
Green line - This also shows a decline but then there is a day above 14V. This tells me that the RTS Volts were above 14V for 360 minutes, or 25% of the time(1440/4). It appears that the controller is playing catch up as it should do. I look outside and see we are at full sun so we will have a splendid solar day. All is good and normal. :)
HTH
John
