What is the Battery Life Expectancy of the TSA Luggage Lock? Denise March 07, 2020 03:18 Follow Under normal use, the battery should hold a charge for up to 6 months. (Normal Use = Roughly 5 activations per day.) Related articles How do I know when the battery is getting low? Why won't pressing the fingerprint sensor wake up my BenjiLock? How to program your Benjilock® By Hampton (Master User) Why won't my BenjiLock open even though the Blue LEDs appear around the Fingerprint Sensor? What Type of Battery does the TSA Luggage Lock Use?