From my research, a lipo can puff from being over drawn, to small a battery for the motor, from being left fully charged, from fast charging, etc. Personally if I had a puffed lipo I wouldn't bring it in the house. I rag on my 30 year old all the time about charging in the house. AND I caught him charging a puffed lipo not long ago, IN the house. Talk about Russian Roulette.

You guys may remember this nihm explosion, that was him.