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Experiences with TI BQ management IC’s when re-building laptop batteries ?

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amyk:
You can find quite a few versions of the bqEVSW by trawling the e2e.ti.com forums. There's at least one person on there who appears to work for TI and will give you the software if you ask nicely; but don't bother asking him for the following, because he's already uploaded various versions of those there:

--- Code: ---bq20z45
bq20z65
bq20z75
bq20z80
bq30z55
bq30423
bq3060
bq34z950

--- End code ---
They all vary in size, which suggests to me that the package contains lots of firmwares too.

Another relevant article worth reading, goes more into the malicious side of things but has some more details if you want to RE the controller deeply: https://media.blackhat.com/bh-us-11/Miller/BH_US_11_Miller_Battery_Firmware_Public_WP.pdf

Gribo:
If your design contains the BQ29330, you should try to clear the fault condition, as it is latched. See page 12 of the datasheet.

datsuncogs:
Hello i am also trying to access a battery chip.. a Texas Instruments BQ30Z55. It is in a DJI drone battery. I have hooked up a USB to SMBUS board and can read some battery info with some software I downloaded Eeprom Works 4.31  but it doesn't list the BQ30Z55 chip so I've gone about as far as I can go. Can anyone put me on the right track? Thankyou.

amyk:
https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/4113.bqEVSWSetup00.09.80_5F00_bq30z55v0.32.exe

datsuncogs:
Thankyou, do you think that only works with TI's own USB interface? The interface I have is this https://www.ebay.co.uk/itm/192919272417

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