Battery safety is one of the three most important factors in safely vaping. With years of examples of people carelessly putting themselves and others at risk battery safety has become very important and something that even a beginner vaper should understand. It is easy to dismiss this as "oh well it's just a battery" and you feel comfortable around batteries because you have them in everything you own, almost. This isn't the same exact situation though. Vaping puts a very heavy strain on battery cells.