BQ25713: BQ25713 - IS this the right part? help selecting other parts for a complete wireless 3cell Li-Polymer charger for wheeled robotics

Part Number:BQ25713

Background -

I work on swarms of wheeled robots(hundreds).  Im sick of plugging them all in when they run out of charge so Im starting to design a wireless 5v charger for a 3cell battery. (rc unprotected ) 

Question in detail -

I need a simple as possible I2c solution to control the charge, balancing and measuring(fuel gauge)  of a 3 cell battery and ideally 15watt fast charging.  The robot has I2c and other pins if necessary but low power and low device count would be fantastic.

I have not had much luck on finding an example circuit that has all these features