So. I have had an Anker powercore for years now, and it has gotten water in it SO many times. The first time was when I was camping, and left it out in the rain ALL night, and the next day, when I found out, I was really sad. It, unsurprisingly, wasn't working. At the time, I had no idea how to open the thing, so I basically mauled it with a knife. It eventually opened, so I scraped at the curcuit board with a knife, and my keys, and it just started working again. I was overjoyed. Since that time, (a little over a year ago now) I have left it out in the rain, and completely submerged it in water, more than 5 times, each of them, I just get out my keys, and scrape at the circuit board, and it starts working. Such amazing build quality, and robustness is amazing in such a cheap product! Great work Anker, keep it up!