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[Solved] Lenovo L12S4K01 - BQ8055A . low charging current and error in FCC ( case 3)

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Fogonazo
(@ventas)
Noble Member Customer

this is the screenshot when voltages are the same with multimeter.

image

 

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Topic starter Posted : 11/02/2023 4:39 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 This is because calibration constants which unique for each pcb lot were lost after reflashing with another production lot battery dump. 

 Attached please find corrected dumps, one with DC and FCC 2200mAh, another with DC 3350 and FCC 2200 if laptop will warn about non-genuine battery. 

 Before reflashing, confirm that cells voltages are the same with multimeter to check calibration afterwards. 

 

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Posted : 11/02/2023 11:20 pm
Fogonazo
(@ventas)
Noble Member Customer

@djibattworkshop thanks!

image

 

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Topic starter Posted : 13/02/2023 8:18 pm
serega-86
(@serega-86)
New Member Customer

Please give me pass from file L12S4K01_FIX3.zip. Thanks!:)

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Posted : 05/04/2024 6:24 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

 This file was patched for specific battery. It contains unique to each pcb calibration constants. Reflashing it to another battery could cause wrong cells voltages indication like was described above. It also overwrites FCC, Cycle counter and production date which goes in contradiction with NIP-Embedded rules. Thats why each dump is password protected. 

 

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Posted : 09/04/2024 11:22 am
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