the transport frame has engagement elements configured to engage and hold a battery - operated electronic device via its battery compartment and / or securing elements for the battery compartment cover only . the engagement elements optionally may be movable apart to secure the device , for example by a lever - actuated cam against spring biasing . the transport frame optionally may be mounted in a fixture , for example at a testing location , the transport frame and fixture being configured in complementary fashion whereby the transport frame is mountable in the fixture for any desired purpose , for example to facilitate testing of the device at the fixture location .