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iFixIt Tears Down FBI Tracking Device

The cool folks at iFixIt got their hands on an FBI car-tracking device.  What did they do?  Tore it down and documented it, of course.

Tracking Device Teardown

The long tube is the battery pack. It holds four lithium-thionyl chloride D-cell batteries.  The service life is rated at 10 to 20 years!  You won't find those batteries at your local Radio Shack!