Despite @JonathanReez’s comment, the risk from checked batteries is real. It’s relatively small - but higher than never having a cargo hold fire.
I had a sealed lead acid (motorcycle) battery that I took legally as carry-on on a NZ domestic flight. It was stupidly and improperly rejected by checkin.
I hid it in an airport garden and it was collected by someone else in due course.
They subsequently carried it as check-in luggage on the same route.
I gave them the correct IATA magic words and exemption codes to write on the wrapper - as required by the rules.
The battery arrived OK BUT it was evident that it had been checked during transit. Presumably it would have been removed if it had not met rules.
IATA code must be good juju :-).
“什么都不做 "会发生。
移除电池会发生。