I have had two cell phone charges 'die' and most recently a rechargeable flashlight's batteries exploded while plugged in. I'm guessing power surge? Also have trouble with lights going out intermittently but working a day or two later?
Power surges in the dash are destroying cell phone chargers, etc. on 2008 Toyota Sequoia
i would have your alternator checked for overcharging. something you would not notice all the time. a usual indicator is burning out headlamps prematurely.