BQ51013B: Communicate battery status

Part Number: BQ51013B

Hi,

Im a final year undergraduate.

we are trying to build a wireless charger for implantable devices. Transferring the power and the charging part is almost done. Now we are focused on to communicate battery states to the surface. in BQ51013 there is backscatter communication mode, but its not free to use for the user. Is their any possibility to transmit users data through this Ic. If not Is their any WPC IC which have a spare communication channel.

Thank you.