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[Solved] Lenovo_L11S6Y01_BQ8050A_SanyoLNV_6Cell Not identified by laptop also Too Low Charging Current

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Habib Ullah
(@sajid)
Reputable Member Customer

@torture I requested someone to provide me the backup file for this battery when we concluded that there is no any solution so far.

He sent me the .senc file (did not have nlba1) and we need .eep file also he shared me the test battery log.

I didn't have sanyo tool otherwise If both tool were present at my lab for friend like this situation it could be written in some Lenovo bq8050A chip temporarily (when orig batt not in hand) and dump could be read through NLBA1 device to share eep dump with him.

IMG 20231128 WA0001

 

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Topic starter Posted : 28/11/2023 2:05 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @sajid

I requested someone to provide me the backup

 Writing dump from another battery could fix charge current issue but could create cells voltage calibration issue. Because each production lot has its own unique calibration constants. 

Check this topic where customer encountered this new issue. 

https://www.laptopu.ro/community/postid/17101/  

Cells voltages false unbalance about 80mV appeared after eeprom reflashing. It then causes charge issues because chip thinks some cells are overcharged and not allow to fully charge the battery. 

So the proper solution is writing back original patched eeprom. 

Provide your email or WhatsApp. 

Also tell whether you have Lenovo laptop available to check the battery. 

 

 

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Posted : 28/11/2023 8:24 am
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop

*****

Yes laptop is available 

 

 

 

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Topic starter Posted : 28/11/2023 8:52 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

What is present cells voltages on BatInfo tab ?.. 

 

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Posted : 28/11/2023 9:06 am
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop 

3.47v Each cell with some mV imbalance 

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Topic starter Posted : 28/11/2023 9:25 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Reflash with patched eeprom. Then paste updated picture. 

Go to charge tab and charge a battery to 50%. Then check battery in laptop. 

 

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Posted : 28/11/2023 9:49 am
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop

image

 

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Topic starter Posted : 28/11/2023 10:28 am
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop Still same issue

image
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Topic starter Posted : 28/11/2023 12:09 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Have you tried to write this eeprom ?.. 

https://www.laptopu.ro/community/postid/25572/  

 

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Posted : 28/11/2023 12:32 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop Yes, only the current is modified, as the eep file has but unsupported problem that was still there. I already know that Lenovo has unique IDs (SDI) and it does not work but I tried as last option may be It work.

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Topic starter Posted : 28/11/2023 12:44 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

try the FIX2 eeprom 

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Posted : 28/11/2023 12:58 pm
Habib Ullah
(@sajid)
Reputable Member Customer

@djibattworkshop charging current is 0mA Output led is on

image
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Topic starter Posted : 28/11/2023 1:09 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 try FIX3 

 

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Posted : 28/11/2023 1:26 pm
Habib Ullah
(@sajid)
Reputable Member Customer

Now current is okay in fix3 but still unsupported

image
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Topic starter Posted : 28/11/2023 1:35 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 Download NirSoft Battery Info View app, run it and paste a picture. 

 

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Posted : 28/11/2023 1:38 pm
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