Battery #4 Update.
Well the final testing is going just great. Since I have just about automated the process shy of barcodes as I really don't need them.
I just use number stickers and essentially that is what a barcode is and excel is my friend as I can look up any cell number and get the cell data I want if need be.
The Megacell Chargers which after the workflow is done gives me all the raw data I want in an easy copy and paste format so 32 cells at a time get dumped into excel. The end V and mAh get transfer to the sheet with a rule, where the cell number are, and initial V and IR are recorded.
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To record the initial V and IR and subsequent measurements of the same (post C/D/C capacity test, and 30 day SD test) the python code (by
@enki) with some modifications to write to excel, and a custom vb script, works great, all I do is put the cell in the holder, hit ctrl s or whatever shortcut combo I choose to write to whatever Excel cells I want and the IR and V readings are copied to the appropriate cells from the RC3563.
As all my cells are in numerical order and the Excel Repackr (by Nemo) sorts all cells by optimizing the mAh for each pack but also retaining the cell number the process is straightforward and easy.
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I have also gone a bit crazy with cell analysis and tracking.
Besides recording the exact position of each cell in the pack I decided for excel to give me the whole cell history from initial touch to last and final IR and V check. I am also calculating the V drop per day which gives the SD check a whole new meaning.
It seems that no matter how many days have passed the average V drop per day for these M26 cells is 0.000339 V.
Maybe sometime in the future these numbers may allow us to glean some more diagnostic data from them.
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The automation makes this actually a fun exercise. Too bad it took me till the 4th 14s80p battery to figure out this easy peasy workflow.
Now that I have it down to literally a science I won't need it anymore.
Vive la 18650 I will never surrender to the easy cop-out of the LiFePO4.
Wolf