RBA stands for Re-Buildable Atomizer. An RBA is an advanced vape with a deck for user-installed coils and wicks, called “builds.” The term RBA can refer to removable decks for vape tanks, or for any atomizer with a build deck, like an RDA, RDTA, RTA, or genesis. Over the years, the term Rebuildable atomizer has become more common for the category term, but it’s simply what RBA means.