I have prepaired library which wrap i2c calls and use bq27x00_battery driver from v49. So every program which access to battery registers directly via /dev/i2c-* can use that library (via LD_PRELOAD) which use bq kernel driver. I tested now only bq27200.sh script...

If somebody is interesting see, library is here: https://code.launchpad.net/~pali/+junk/maemo_libbqioctl