You will need a Lipo Safety Bag to put the battery in when charging or when not in use to prevent fire. The fire will be contained in the bag if the battery catches fire.

You need a pouch to store your batteries when they're not in use.
During charging (ideally with the Traxxas charger, which adjusts automatically)
do not put them in a suitcase. If you're using a universal charger, be sure to set it correctly.