I found the battery and charger.  The charger says the battery is unchargeable.  I've only used a few times.

This kind of thing happens to me a _lot_.  Is it possible for EMP discharges to break a battery?  I ask because I also get ghost keystrokes and mysterious freezups, crashes, and power failures in newly acquired devices, and personally think about wireless stuff a lot so it pops into my paranoia.