Sucks, but you get what you pay for. With their packs so cheap, you are going to get a bad one every now and then. For the cost of the packs, it ain't worth the hassle. What do you expect for half price lipos? Customer service?

By the way, I love my zippy packs and yes, I have gotten a bad one before. Just chalk it up as a loss and move on. Buy another and you still haven't spent what it cost to get a name brand pack...

Just saying...