Hello.
Thank you for asking.
I bought the first batteries of this batch on April 1st,
Then I made a second round trip on the 15th, and gotta get the rest tomorrow 22 (this last lot with mostly new batteries).
Of course, I have already extracted cells.
In a way, I give the cells a registration
(Eg JV4 - "J" indicates a batch of identical batteries, and N a number of a cell in battery 1 to 6 or 1 to 9)
I started with the Dell / TC030, then the Dell PC764 and then the C1925.
Then I actively focused my work on the C1295, CF623, M9014 and XX327.
So I dedicated a letter (J) to the PC764, from JA to JZ = 26 batteries.
Everything is noted on forms before being entered in Excel to help me
making balanced packs.
Unfortunately, I have not yet started filling the excel sheets, which will allow
To view a capability histogram.
Before these batteries, since November 2016, I have actively searched for used batteries,
And found more than 700, which allowed me to enter more than 3500 cells in an Excel sheet.
All I can say at the moment is that the quality / capacity of the last batches is much better than those extracted since November: few batteries
Rusted, and the PC764, in 56Wh, are made up of batteries with theoretical capacity of more than 2500Wh.
This does not presage the degree of aging, of each battery, of course.
I try to process an average of 120 cells a day, and will spend some time entering Excel,
The 17 sheets of about 120 measurements, in order to be able to represent the results graphically.
I could thus represent more precisely the capacity of the cells that I have already extracted, per battery type.
Best regards.[
VdVoort4 said:
Have tested cells from soms packs yourself?