Disclosed herein is a test apparatus and a control method thereof, particularly a test apparatus capable of inactivating an operation of an in vitro diagnostic device when it is impossible to perform a test, by allowing a user to intuitively recognize the current state of a battery provided in the in vitro diagnostic device by calculating a power consumption rate of a battery provided in the in vitro diagnostic device when an in vitro diagnostic device is used and determining a current amount of power of the battery based on the calculated power consumption rate, and a control method thereof. The test apparatus comprises a storage configured to store information related to a battery provided in the test apparatus, a controller configured to calculate a power consumption rate of the battery changed according to an operation of the test apparatus based on the stored information of battery and configured to determine a current amount of power of the battery based on the calculated power consumption rate of the battery； and a display configured to display the current amount of power of the battery and at least one piece of information related to the operation of the test apparatus based on the determined current amount of power of the battery.
