stick bq20z80.py into your ... IDA\procs directory
stick dis_bq20z80.idc into your ... IDA\idc directory

senc_data is a dump of firmware from a battery.
senc_data.idb is a somewhat marked up IDA Pro database for it.

The API is in SMBusAPI directory with some example code.
caulkgun is in that directory with a readme.  It has binary and source code available.

