Notifications
Clear all

How to recover a Laptop Battery Fuse 12AH3 (4 pins type)

Page 2 / 2
a7medsaleh99
(@ahmed-saleh)
Trusted Member Customer
Screenshot 2021 11 22 17 43 32 42

Hi friends Can this liquid solder tin be used?

What degree of melting is suitable? 

138 , 183, 217 

ReplyQuote
Posted : 22/11/2021 3:54 pm
torture
(@torture)
Member Moderator

138 would be a good choise but i prefer to use sticks, with paste it's hard to control the flow.

Using regular 60/40 is also an option, not ideal but still works if nothing else available.

ReplyQuote
Posted : 22/11/2021 4:17 pm
electrogizmos
(@electrogizmos)
New Member Customer

@torture Hi,did put solder across pin 1 and 3  but how about pin 2? its hard to see on the picture, pin 4 is left unconnected?

Thanks

This post was modified 2 years ago by electrogizmos
ReplyQuote
Posted : 23/11/2021 8:32 pm
torture
(@torture)
Member Moderator

@electrogizmos 

Which pins do you consider 1,2,3,4?

What is hard to see on the photo i even made it under the microscope?

ReplyQuote
Posted : 23/11/2021 8:40 pm
electrogizmos
(@electrogizmos)
New Member Customer

@torture Thanks for your reply,according to the datasheet pins 1 and 3 are the fuses,pin 2 in center connection of the two fuses ans pin 4 is the resistor: http://www.karosium.com/2016/09/the-weird-fuses-in-laptop-batteries.html

ReplyQuote
Posted : 23/11/2021 9:28 pm
torture
(@torture)
Member Moderator

If you like to refer to this datasheet restore the connection between pins 1 & 3 and that's it.

ReplyQuote
Posted : 23/11/2021 9:35 pm
makomboreroo
(@makomboreroo)
Trusted Member Customer

@torture you forgot to add the 3 leged fuse diagrams

ReplyQuote
Posted : 24/11/2023 10:30 pm
torture
(@torture)
Member Moderator
Posted by: @makomboreroo

you forgot to add the 3 leged fuse diagrams

I don't think so. How about you search first?

 

ReplyQuote
Posted : 24/11/2023 10:50 pm
madmax
(@madmax)
Active Member

How about this one?

20231202 2307 003 0.000   Copy

While trying to recover, it activated and became very hot until the heater below the soldering was vanished.
It is a 3 pin fuse D6SC312A

20231128 2326 001 0.000

This is before the melting:

20231129 1710 001 0.000

Is it safe to recover using a 12A wire? Between 1 and 2 and also connect the middle to 3 ?

ReplyQuote
Posted : 02/12/2023 9:26 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @madmax

While trying to recover, it activated and became very hot until

 It means reason of the fault was not rectified or Permanent Failure flag was not cleared so chip every time tries to blow the fuse. 

Posted by: @madmax

Is it safe to recover using a 12A wire?

no 

Posted by: @madmax

Between 1 and 2 and also connect the middle to 3 ?

 no. Follow recovery method described in the tutorial. 

First rectify the reason of the fault. 

 

ReplyQuote
Posted : 04/12/2023 10:50 am
madmax
(@madmax)
Active Member

Ok, probably found the error. Open new thread not to mess up with this one. Thanks.

ReplyQuote
Posted : 04/12/2023 6:35 pm
Page 2 / 2
Share: