It's a coated insert to guard in opposition to shorts in the event you had harm on your battery wrap, however you should Constantly inspect your batteries prior to using and make sure the wrap isn’t broken. If it is you need to rewrap it, Video clip The reaction is https://riveruldvn.tkzblog.com/34765912/5-easy-facts-about-how-to-buy-a-vape-online-under-21-described