I am very thankful that I had the LipoSack as I am sure that our house would have been severely damaged without it. I heard the battery venting and I grabbed it and ran it outside to a cement area and the explosion was unbelievable! I was charging a one month old 2S 4800mah and all of the settings were correct. From what I can tell, the balancer malfunctioned and the charger just kept charging. Anyway, I am very thankful for the LipoSack.