Excuse me butting in here but I understand the ELT runs off a lithium battery?
We are expected to provide a recycling point for lithium batteries (in our retail shop) and the safety advise even on used lithium batteries is that both ends - +ve and -ve - must be covered with insulating tape.
All that to say, lithium batteries need careful handling, so I wonder if that's being taken into consideration by the maintenance crews?
Just saying......!