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Lenovo 02DL012 BQ40Z697A FW v1.05 unseal request

FJ
 FJ
(@brs)
Noble Member Customer

unseal not working for reset/reprogramming.

image
image

pls approve for remote reset

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Topic starter Posted : 27/09/2023 5:40 am
torture
(@torture)
Member Moderator

Approved.

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Posted : 27/09/2023 6:32 am
FJ
 FJ
(@brs)
Noble Member Customer
image

successfully reset by admin, thanks.

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Topic starter Posted : 27/09/2023 11:40 am
FJ
 FJ
(@brs)
Noble Member Customer

received the battery today. noted issue with cells voltages. 

image

on multimeter voltages are 4050mv, 4050mv, 4060mv.

is it calibration parameters issue? 

how to resolve?

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Topic starter Posted : 29/10/2023 4:25 pm
FJ
 FJ
(@brs)
Noble Member Customer

checked cells resistance externally which is 73, 81, 75mOhm

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Topic starter Posted : 29/10/2023 4:27 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @brs

received the battery today. noted issue with cells voltages

 Check cells voltage on Test Battery Demo software 

Posted by: @brs

is it calibration parameters issue? 

It could be hardware issue too, pcb or chip fault 

Posted by: @brs

how to resolve?

 Depending on the root cause which is unknown at the moment 

Root cause    -    Solution 

Calibration issue - Calibrate ADC channels 

PCB issue - replace faulty components 

Chip issue - replace chip 

 

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Posted : 29/10/2023 7:02 pm
FJ
 FJ
(@brs)
Noble Member Customer
Posted by: @djibattworkshop

Check cells voltage on Test Battery Demo software

image

same as NLBA

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Topic starter Posted : 30/10/2023 11:37 am
FJ
 FJ
(@brs)
Noble Member Customer
Posted by: @djibattworkshop

Calibration issue - Calibrate ADC channels

how to calibrate ADC channels? through BQ software( and how)?

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Topic starter Posted : 30/10/2023 11:38 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @brs

through BQ software( and how)?

 yes 

Posted by: @brs

how to calibrate ADC channels?

 follow TI guidelines 

 

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Posted : 30/10/2023 12:27 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 root cause should be clarified first otherwise you could waste a time on the non relevant matters 

 For example there is no sense to calibrate a chip if pcb is faulty 

 

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Posted : 30/10/2023 12:31 pm
FJ
 FJ
(@brs)
Noble Member Customer
Posted by: @djibattworkshop

For example there is no sense to calibrate a chip if pcb is faulty

pls suggest what should be checked to trace out.

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Topic starter Posted : 30/10/2023 2:08 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Measure cells voltages directly on the chip pins. 

 

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Posted : 30/10/2023 2:57 pm
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