An electromechanical surgical system is provided and includes a hand-held surgical device (100). The surgical device includes a device housing (102) defining a connecting portion for selectively connecting with an adapter assembly (200), the housing being configured to removably receive a battery (156) therein； at least one drive motor supported in the device housing and being configured to rotate a drive shaft； and a circuit board (154) disposed within the housing for controlling power delivered from a battery to the motor. The system includes a battery configured for disposition in the device housing, the battery being capable of powering the at least one drive motor, the battery including at least one display (151). The device housing is configured such that the at least one display of the battery is visible therethrough.
