lenovo_battery_repair

Scripts for repair lenovo battery LNV-45N1175 from ThinkPad x230 on bq8030 controller

Connect battery to VGA (D-Sub):
Battery connector: | + | + | |SCL|SDA|unkn|GND|GND|
VGA connector pins: 5-GND, 12-SDA, 15-SCL

Detecting i2c port using i2c-tools and get port number of VGA I2C device

$i2cdetect -l

Detect i2c-hex-address for connected battery. And find bat-address by connect-disconnect battery

$i2cdetect -y [portnum]

Get report about battery

$python3 bat_report.py [portnum] [i2c-hex-address]

Hack bat for access to eeprom

$python3 bat_hack.py [portnum] [i2c-hex-address]

Read eeprom

$python3 bat_read_eeprom.py [portnum] [i2c-hex-address] [eeprom-filename]

Correct eeprom, I don't know how.... See below

Write eeprom

$python3 bat_write_eeprom.py [portnum] [i2c-hex-address] [eeprom-filename]

After that don't forget start battery cntroller

$python3 bat_exec.py [portnum] [i2c-hex-address]

Thanks for Viktor:

http://www.karosium.com/2016/08/hacking-bq8030-with-sanyo-firmware.html
https://github.com/karosium/smbusb

Correct EEPROM file

For my battery I correct eeprom:

1. reset Charge Cycles:
   [0x500-0x501] set 0x0000
   [0x600-0x601] set 0x0000
2. [0x5A8] change 0x80 -> 0x00
3. [0x668] change 0x80 -> 0x00