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[Solved] Unable to update charging current of Dell XCMRD with BQ8055-D1 chip

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Habib Ullah
(@sajid)
Reputable Member Customer

New Cells replaced with old cells now I want to change the charging current in the following dump file. @torture @djibattworkshop kindly help me in this problem.

 

image
image
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Topic starter Posted : 21/09/2023 2:08 pm
torture
(@torture)
Member Moderator

Is the battery charging?

Charging current request is 0 which is not ok.

Go to charge tab start charging wait 30s and post screesnhot.

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Posted : 21/09/2023 3:14 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@torture Very sad circuit is looking dead not able to read anything...is there any way to solve this issue?... 1.5v present on data line  

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Topic starter Posted : 21/09/2023 3:34 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

it looks like static eeprom was edited and checksum check was not passed. In this case discharge is working but charge is locked. 

 

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Posted : 21/09/2023 3:38 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Check if pcb is warm or cold. 

 

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Posted : 21/09/2023 3:39 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop PCB is normal

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Topic starter Posted : 21/09/2023 3:42 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

disconnect a battery from Nlba1, and check SCL and SDA pins on battery connector using multimeter on diode check, post direct and reverse values measured. 

 

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Posted : 21/09/2023 3:47 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop

WhatsApp Image 2023 09 21 at 9.14.38 PM
WhatsApp Image 2023 09 21 at 9.14.38 PM (1)
WhatsApp Image 2023 09 21 at 9.14.39 PM

 Now no volt on both D and C pins

 
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Topic starter Posted : 21/09/2023 4:17 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

It is direct check. Run a reverse check too with red probe on the ground. 

 

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Posted : 21/09/2023 5:36 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop

IMG 20230922 165538
IMG 20230922 165532

 

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Topic starter Posted : 22/09/2023 12:08 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Is it diode check menu ?.. 

It looks like a resistance meter 

 

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Posted : 22/09/2023 12:12 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop 

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Topic starter Posted : 22/09/2023 12:17 pm
Habib Ullah
(@sajid)
Reputable Member Customer
IMG 20230922 171638
IMG 20230922 171625
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Topic starter Posted : 22/09/2023 12:18 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

It shows Open Line. Take a working diode and check if tester could measure it correctly in direct and reverse connection. 

 

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Posted : 22/09/2023 12:28 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop

IMG 20230922 175451
IMG 20230922 175358
IMG 20230922 175434
IMG 20230922 175342

 

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Topic starter Posted : 22/09/2023 12:56 pm
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