A surgical system comprising: a handpiece comprising: a body, a handpiece controller, and a handpiece connector operatively coupled to the body and comprising a handpiece voltage terminal and a handpiece data terminal with each connected to the handpiece controller, and a first coupler; and an autoclavable battery comprising a housing, a rechargeable cell for storing an electric charge, a battery controller, and a battery connector operatively coupled to the housing and comprising a battery voltage terminal and a battery data terminal with each connected to the battery controller, and a second coupler configured to rotatably engage the first coupler; wherein the second coupler is further configured to receive the first coupler along an axis at an initial radial position where relative axial movement between the battery and the handpiece is permitted, and to permit rotation of the battery relative to the handpiece from the initial radial position to a first secured radial position and a second secured radial position where relative axial movement between the battery and the handpiece is constrained; and the handpiece terminals (76A, 76B) and the battery terminals (80A, 80B) are arranged such that rotation from the initial radial position to the first secured radial position brings the handpiece voltage terminal into engagement with the battery voltage terminal to transmit power between the cell and the handpiece controller, and rotation from the first secured radial position to the second secured radial position brings the handpiece data terminal into engagement with the battery data terminal to communicate data between the battery controller and the handpiece controller while maintaining engagement between the handpiece voltage terminal and the battery voltage terminal. a handpiece comprising: a body, a handpiece controller, and a handpiece connector operatively coupled to the body and comprising a handpiece voltage terminal and a handpiece data terminal with each connected to the handpiece controller, and a first coupler; and a body, a handpiece controller, and a handpiece connector operatively coupled to the body and comprising a handpiece voltage terminal and a handpiece data terminal with each connected to the handpiece controller, and a first coupler; and an autoclavable battery comprising a housing, a rechargeable cell for storing an electric charge, a battery controller, and a battery connector operatively coupled to the housing and comprising a battery voltage terminal and a battery data terminal with each connected to the battery controller, and a second coupler configured to rotatably engage the first coupler; a housing, a rechargeable cell for storing an electric charge, a battery controller, and a battery connector operatively coupled to the housing and comprising a battery voltage terminal and a battery data terminal with each connected to the battery controller, and a second coupler configured to rotatably engage the first coupler; wherein the second coupler is further configured to receive the first coupler along an axis at an initial radial position where relative axial movement between the battery and the handpiece is permitted, and to permit rotation of the battery relative to the handpiece from the initial radial position to a first secured radial position and a second secured radial position where relative axial movement between the battery and the handpiece is constrained; and the handpiece terminals (76A, 76B) and the battery terminals (80A, 80B) are arranged such that rotation from the initial radial position to the first secured radial position brings the handpiece voltage terminal into engagement with the battery voltage terminal to transmit power between the cell and the handpiece controller, and rotation from the first secured radial position to the second secured radial position brings the handpiece data terminal into engagement with the battery data terminal to communicate data between the battery controller and the handpiece controller while maintaining engagement between the handpiece voltage terminal and the battery voltage terminal.