rePackr issues

dallenroyse

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Aug 20, 2019
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Hello, I am assembling a 12kw "powerwall" using salvaged 18650s. I entered the battery capacities into a spreadsheet and pasted the list into therePackr program.
I combined the cells into 48V packs.During assembly, it called for battery capacitiesthat were not in the batteries available. This happened about 10 times.:mad:
This cast doubt on the rePackr program.

Rerunning the program, gave a different grouping of batteries. WTFrench? Clicked the "Generate the packs" button and got yet a different result. Clicked it again. Different result.

If I can't get the program to give a consistent output, how can I have any confidence in it?

Help please?

BTW, I have signed up to be a v2.0 Alpha user.
 

daromer

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Oct 8, 2016
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It randomizes to a Close decimal point. It wont be 100% same.
 

hbpowerwall

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Oct 7, 2016
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As Daromer said, it'll never be exactly the same. Perhaps a screen recording and upload to show us exactly what is happening?
 

daromer

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Note that repackr is made to make the total capacity and Number of cells Close to same. That can be done in many variants
 

dallenroyse

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Aug 20, 2019
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3
Before I assume there is anything wrong with the program, I am going to re-enter the capacities of the 1596 cells and assume that I made data entry errors.

Repackr calls for the values to be comma separated values. It is most useful and easiest to enter the values in a spread sheet column. The program seems to work if I cut and paste the values from the spreadsheet into the program. Is there any known problem doing it like this?
 

daromer

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Not really. Copy them to Notepad or something first to make sure you dont have junk-chars.

But as said its random.... Its just doing a rough calculationg trying to get it as close to possible and that can be done in numerous ways.
 
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