For a case with a separate, attachable combination lock — the kind that clips through the zip pulls rather than being built into the shell — replacement is simple: just buy and attach a new TSA-recognized lock, checking specifically for the genuine red-diamond marking rather than assuming any combination lock will do.
For a case with an integrated lock built directly into the shell or zip housing itself, replacement is more involved and generally requires either a manufacturer-supplied replacement part matched to the exact model, or a specialist luggage repair service capable of fitting a new integrated mechanism.
If an integrated lock jams and a repair isn’t practical or available, a separate attachable TSA lock can often be added alongside the non-functional integrated one, using the zip pulls directly, as a practical workaround rather than replacing the case entirely.
Check with your airline and read the label before you follow anything here. Lithium battery watt-hour limits, liquids allowances and lock policies differ by carrier and by country, and change over time — the figures published by the airline or security authority you are actually traveling with take precedence over anything written on this site. A power bank or spare battery is carried exactly as its manufacturer and your airline specify, never estimated. We report what is published — a watt-hour rating, a size limit, a lock's official recognition — and this site describes the equipment only: nothing here is a guarantee about what a specific checkpoint will allow on a specific day.
Last reviewed 26 August 2026