S7 Active Exploded! (See pics)

There's a thread about this already, literally the one made just before yours so, in the future why not read the past day's posts before creating a new thread 'cause most forums including this one really don't like multiple threads on the same topic. ;)

And technically no, it didn't explode, the battery kept itself together as designed thankfully. If it had caught fire for some reason then it would probably have actually exploded - as it is, the gases were trapped inside the battery assembly so it just bloated up bubble-like.
 
Yup use a good charger and maybe avoid fast charge unless you really need it and don't use cheap chargers and you should be fine