bq9000 Acer battery reset
Could you generate new battery parameters report to see updated Cells voltages after daily relax period?
It's important to confirm cells not have parasitic self-discharge which could happen after deep discharge.
Also make screenshot of Static Parameters to see Chip name detected by the software.
Also make picture of battery label to confirm it's authentic.
I have Acer battery AL12A32 with "Locked" status, all cells around 1V each one.
After that, i opened battery, charged them indiviually , but with no luck, still Locked.
What i can do to reset ?
In few words, this is the procedure How to reset BQ9000 chip in a laptop battery:
Before opening the battery case, your battery was in a Lock state because of over-discharged cells (about 1v). Due to this low voltage, the chip entered in a so-called "Permanent Failure Mode". Even you replace the cells with new cells the chip will still be in Permanent Failure Mode. You need to clear error flags of the BQ9000 chip then update the FCC parameter to reflect new cells capacity. Also, have in mind that some firmwares blow the thermal fuse located on the PCB. In that case, the fuse needs to be repaired.
The most difficult part is resetting/clearing errors of BQ9000 chip. You must unseal it, this procedure is strictly confidential. We will add soon support for BQ9000 chip. Until then please read all battery parameters and take a full picture.