What charger are you using? What is your charging method - for example, do you take the batteries out of the plane to charge, and do you watch the batteries continuously as it is charging?

Many of the things I have read about LiPo's say that they should never be charged in a plane, or around anything flammable, that they should be visually inspected between uses, etc.

It is my feeling that batteries used for RXs are much less likely to be abused (and therefore should be safer) than those used to power brushless motors, but I don't know this for certain.

Leonard