lorenfb wrote:Turbo3 wrote:lorenfb wrote:Turbo3 had indicated that Pro would have the ability to calculate battery resistance similar to TM-Spy & LeafDD. Can't find it either
noted in the manual nor the app itself. I would like to determine the battery resistance of the 2019 40kWh, and compare to my 2013.
Have I missed it during my search?
Sorry about that. I seem to have forgotten that request so not included in this test release of LeafSpy Pro.
As I recall now, the way it would work is you detect the voltage drop for a given large current increase.
I might see if I can implement this in a custom screen with instructions on how to run the measurement. With all accessories off and starting from a stop then floor it for a few seconds while staying within the posted speed limits. The custom screen would allow for frequent reads of the High Voltage battery volt and current.
Thanks Turbo3 for remembering this topic. I've been able to do the test using LeafSpy as described here;
http://mynissanleaf.com/viewtopic.php?f ... 20#p559503
If you could integrate the few steps used into a single operation, that would simplify the process for others interested in that type of Leaf data.
Here's how you did it for TM-Spy;
The graphic of TM-Spy is more insightful than the simple numeric results.
Greatly appreciate all your efforts to continually improve LeafSpy based on users' requests.
After thinking about it I now see you can collect the data to create the graph with this new test version.
Go to the custom Screen 3 and load one of the BMS Grp1 screens. To start the test tap the black circle in the upper left corner and data including the HV Battery Voltage and Current will be saved to a csv file which you can then plot in excel. The data file will be saved in the Custom Screens folder with a name like this "BMS_Grp01_xxxxxxxxxxxxx.csv" where xxxxxx will be date/time, part of ViN and device unique information.
This data will be saved at 5 to 7 samples per second so should give you a good graph. Tap the flashing Red dot in upper left corner to stop recording data.
Later I can look at adding a graph element so you can directly plot the graph on a new custom screen 3 get like in TM-Spy.