It would be very hard pressed for the battery to suddenly cause this damage. You can inspect the shrink to see if any metal is showing other than the buttons on top and bottom of each cell. You can also run a voltmeter across the cells to make sure they are the same. As long as these things are good, run it. A 7.2v pack cannot suddenly combust all of your electronics, unless you shorted it out.
Horizon Hobby Spektrum Product Manager
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