A surgical system and method is provided generally including a portable surgical instrument, a battery assembly, and a battery charger. The battery assembly is removably coupled to the portable surgical instrument and is configured to wirelessly transfer electrical power to the portable surgical instrument. The battery assembly is also removably couplable to the battery charger and is configured to wirelessly transfer electrical power to the battery charger and wirelessly receive electrical power from the battery charger. The portable surgical instrument and the battery charger are configured for simultaneous bi-directional communication of data with the battery assembly via the transferred or received electrical power.
