I am trying to talk to a typical smart laptop battery from a 68hc12DJ64 processor on the I2C bus using the SMBus protocol. We just need to collect simple "how much charge is in there" data from the batter. The problem is that I dont know what is the address of the battery? Searched the internet and read through all the SMBus. I2c, motorola, battery specs but could not find any reference for finding battery address.
I am obviously missing something big time. Can someone tell me where to find the battery address?
Also, if you have talked to a battery using a 68hc12 before, can you share your experience.