one of them is already puffed majorly I can see it through the HARD CASE! I have never ran them more than 6 minutes never keep them in a too hot or too cold area. And I only charged them at 5 amps! And always had them charged balanced as well! I am really bummed this was my first set of lipos and I was told these guys were the best... I also had the lvc on my spartan on as well. Any ideas? Is it safe to use in this condition?