How to determine the value of nTargetID in WriteSMBusWord ？

 Hi  Doug Williams:

                  In most cases，the default target address is defined as 0x17。But I  also found  that the target address may be 0x16。This is bothering 。how to define the target address   ？

The device address for smart batteries is 0x16.

The last bit of the device address field is a read/write bit. "0" = write, "1" = read. That's why the device address is showing 0x16 and 0x17 sometimes.

Attached is a informal app note on SMBus for your reference.