Caution defective batteries could blow up

EDIT: Lithium ion batteries are "high tech" devices that can be sometimes kaput well. I assume my battery was an isolated incident which is flunked by the quality control. Warhscheinlich an internal short circuit or the like, or deep discharge can damage the battery (although that at S4 can not really happen).
After all, he did not explode, what can happen! Inflation is still better than explode. After the customer of Mumbi has contacted me and refunded my money and even sends a leather bag as a gift, I guess that you can apologize individual cases thoroughly. I remain despite good customer service at 1 star rating, sorry. Rating is at 4.8 / 5 yes high enough :)

IF BATTERY less capacity seems to have AS THE ORIGINAL BATTERY S4, CAUTION!

--------
I bought the battery for easy Höhrer charge. It appeared however from the outset not actually store more charge (which possibly was also due to the apps more electricity). After a few months I realized, however, that was down the glass cover with the gesamtent touchscreen forward! Have first get a big shock, because I'm very careful to deal with the Galaxy S4, and have found after a short time that the battery has bloated! It has never been exposed to frost or other, there was only charged many times. After inserting the original battery I could push back the screen again.