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How to unlock dell battery t54f3 with BQ30422 chip

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Hardey
(@hardey)
Estimable Member

Should I replace the fuse with another one or what? The present is there, so am comfuse cos I have to been able to use this device to unlock any battery successfully since I paid for the license. 

This post was modified 1 month ago by Nicusor
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Topic starter Posted : 19/09/2021 3:10 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @hardey

the charging log. and what can i do to make it start discharging. 

Nothing charging there. Current is 0mA.

 

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Posted : 19/09/2021 3:38 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @hardey

Should I replace the fuse with another one or what?

No.

Do you know how to check the fuse with multimeter?

Have you read our tutorial on fuse recovery?

 

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Posted : 19/09/2021 3:40 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @hardey

so i u sujesting that i should disconnet the hole battery from the PCB and wait for 30mins  and reconnet it back

If your fuse is Ok, if SysPres is connected then yes, try disconnect the cells from Pcb for 30 minutes.

 

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Posted : 19/09/2021 3:43 pm
Hardey
(@hardey)
Estimable Member

@djibattworkshop, no l don't really know how to check the fuse voltage with multimeter and the normal voltage of the fuse 

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Topic starter Posted : 19/09/2021 4:04 pm
Nicusor
(@azzido)
Member Admin
Posted by: @hardey

Should I replace the fuse with another one or what? The present is there, so am comfuse cos I have to been able to use this device to unlock any battery successfully since I paid for the license. 

If you think that you paid for the license and you want in 1-2-3 seconds to "unlock any battery successfully" then you are not on the good road.

As I already mentioned, repairing laptop batteries is a top secret world and it requires good know how. There is NO 1-2-3 seconds Unlock method for ALL batteries in the WORLD. Even you pay 1494 even you pay 1000$ as the other licenses cost. Each battery must be analyzed, understood and repaired individually.

The chip you have was unlocked by many other users, including me, I have one on my desk. So, there is nothing wrong with the license.

Some people are ignoring that there could be other failures inside the battery like hardware damages which have nothing with the license too.

NLBA Laptop Battery Analyzer with Chip Reset & Repair Option

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Posted : 19/09/2021 4:05 pm
Nicusor
(@azzido)
Member Admin
Posted by: @hardey

Should I replace the fuse with another one or what?

There are video tutorials explaining what is this fuse doing and how to restore it. I have never mentioned that the fuse must be replaced.

If the chip has goods cells voltage, the errors were cleared and it still does not unlock for sure you must continue the investigation by checking the fuse. If still does not unlock it then the investigation must go on.

NLBA Laptop Battery Analyzer with Chip Reset & Repair Option

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Posted : 19/09/2021 4:07 pm
Hardey
(@hardey)
Estimable Member

Ok, I will give you feedback after my investigation of the fuse and PCB. 

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Topic starter Posted : 19/09/2021 4:14 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @djibattworkshop

Manufacture Access 0xA90A means chip is in Current Overload state

My mistake. This code means OverVoltage failure. And normally cleared on standard reset.

If any of suggestions not working it could be PCB hardware issue.

 

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Posted : 19/09/2021 8:06 pm
Hardey
(@hardey)
Estimable Member

hi , i have cut the PBC and connect it back after 30mins and unlock it but is still showing lock but i notice a little change in the charging bcos is was red and now is yellow it add up a bit. .

image

 now are what is the next thing to do . should i change the PCB.

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Topic starter Posted : 20/09/2021 6:11 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Could you paste a dump here?

Also what is chip firmware version?

 

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Posted : 20/09/2021 8:56 pm
Hardey
(@hardey)
Estimable Member

@djibattworkshop you mean that I should read chip file and paste the dump file. And also send the chip version on, right? 

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Topic starter Posted : 21/09/2021 6:00 am
Nicusor
(@azzido)
Member Admin
Posted by: @hardey

@djibattworkshop you mean that I should read chip file and paste the dump file. And also send the chip version on, right? 

The chip FW is read in the latest NLBA1 software version 3.5.1: https://www.laptopu.ro/download/

Yes, you need to go to Reset, Unseal the chip, read EEPROM and attach it here.

But make sure:

- you checked the fuse and it is fine (a picture to confirm this would be much better)

- you connected the system present pin, pin No.4 to GND (a picture with the battery wiring would be much better)

NLBA Laptop Battery Analyzer with Chip Reset & Repair Option

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Posted : 21/09/2021 6:23 am
Hardey
(@hardey)
Estimable Member

the eeprom file

image

 

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Topic starter Posted : 21/09/2021 9:24 am
Hardey
(@hardey)
Estimable Member

The pictures

IMG 20210921 101934
IMG 20210921 102015

 

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Topic starter Posted : 21/09/2021 9:30 am
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