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CCS/BQ27510-G3: BQ27510 : WRONG SOC DATA

Part Number: BQ27510-G3
Other Parts Discussed in Thread: BQ27510, BQ27441-G1, MSP430G2553, BQSTUDIO

Tool/software: Code Composer Studio

Hello TI team, 

I'm using the fuel gauge BQ27510-G3 on my project to read the SOC of my battery Li-Po 1200mAh.

I success to read from the BQ but my problem is the soc always equal to 100% (I think it's a default value from the BQ) and the Design capacity equal to 1000mAh. 

By the way the current voltage value is correct (equal to 3.7). 

Now my questions is :

1- The BQ27510-G3 need any configuration before start working ??

2- What is the difference between LSB command and MSB command ? are they return the same value ?

3- How can I do to have a correct SOC value?

Thank you.