I think no matter how careful we all are sooner or later if one works on trucks and equipment .

You will have a battery explode in my case it was only the second or third in my whole life.

So in around 35 years I guess it was not to bad .

I can`t understand my poor coworker who was 50' away inside thought a propane tank exploded and was hiding under his desk.

Not really what just happened had all the cables disconnected I had charged the first battery seemed just fine.

moved the charger to the second battery ( Cables on Correct) Turned on the charger and Kaboom . I thought the charger exploded .

It didn`t seem that loud blew off the top and one of the sides

 

Hindenburg was full of hydrogen....