What is the Battery Life Expectancy of the TSA Luggage Lock? BenjiLock Care Team December 19, 2018 20:50 Updated 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? What type of Batteries are Airline Passengers allowed to carry? How many users/fingerprints can BenjiLock TSA store? What Type of Battery does the TSA Luggage Lock Use? Why didn't I receive keys with my TSA Luggage Lock?