From the TSA’s own description of a recent false positive:
The passenger was an engineer and said he built the battery to power his DVD player for the long flight to Hawaii. After recognizing that the item could be seen by other passengers as a threat, the man surrendered it to Supervisory TSO Raiford Patterson and was allowed to board the flight.
Miniluv would be proud. This thoughtcriminal learned to love Big Brother before joyfully accepting his sentence—government confiscation of his property.