A friend of my wife called yesterday because a rechargable battery she was charging had burst into flames and she had to put it out with plant soil. Good thing she didn't leave it to charge overnight...
I was asked to help figure this out. So I started asking about the charger and the batteries. It turned out the rechargable battery (presumably an AA cell) arrived earlier the same day from...
Don't get batteries and phone chargers from unknown sources. These can burn your house down.