Yes indeed, you never leave a charging lipo unattended and always put them in a fire bag when charging. Lipo's do have a history of catching fire and need to be watched as they charge. They will also catch fire in a crash if the right set of circumstances is present. They are good batteries, however they must be respected and monitored at all times. I might be on the extreme side, but I store mine in a fire proof box in between trips to the flying field, but then again, I work in the fire protection field. Good Luck, Dave