Jigsawh, there are multiple reasons why this can happen. From bad soldering, cracked solder connection, to a bad manufacturing of the part. None of this is uncommon. Of course dropping it and " fell 3-4 times the same day" does not help it any:-), the least likely reason is this "used it once with my wet hand." The number one reason for it are cheap and unsafe aftermarket chargers. I suggest to always get an original charger. Hope this helps, good luck.