I have always respected the technology, and have been flying electrics since 07 without incidence. I may have been cavalier in the way is stored them, but it was my thought that if a lipo was going to catch fire, it would do so during the charging cycle. With my lipo fire that happened 2 hours later, is something you cannot plan for. However as I remember, I marked these batteries as practice batteries as I did not think they held their voltage well right off the bat. However I flew them the day before and they did awesome, so there was not really any warning sign. However from now on, if I suspect any battery of having an issue, it will be discarded immediately. I may also think about buying and replacing my batteries every year as another precaution.