System and Method of Power Estimation for Wireless Power Transfers

A wireless power transmitter performs power monitoring based on detection of power transfer initiation and termination request messages inherent to a wireless power transfer protocol. By linking the power monitoring to the messages in the wireless power transfer protocol, the wireless power transmitter is capable of monitoring power without requiring the introduction of additional, special purpose hardware or circuitry, thereby reducing the cost, size, and complexity of a wireless power transmitter and/or receiver implementing these techniques.