What is an RDA? RDA or Rebuildable Dripping Atomizer is an an RBA with a deck with posts to anchor the coils and provide the electrical connections to the battery (mod) that heats the coils. The deck is covered with a cap (an outer shell) that screws on with threading or slides on with o-rings. RDAs have no tank section to hold e-liquid. They’re designed for e-liquid to be dripped from a bottle, drop by drop, directly onto the coils and/or wicks (usually after removing the cap, which is then replaced after dripping). Sometimes the decks have a well under the coils that holds a small amount of e-liquid, usually less than 1ml.
RDAs can produce astonishing amounts of vapor, especially when outfitted with exotic multi-coil builds at ultra-low resistance (0.05-0.2) and vaped at sufficiently high power (100+ watts), typically on unregulated mechanical mods (although the “arms race” in regulated mods toward ever-higher power may change that). In fact, RDAs are the stars of "cloud-chasing" competitions now held around the world.
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