Slight correction. Most people just refer to the battery box as a mod or box mod. As for what is a good box mod. There are so many and different sizes. It's easier to decide when you buy it based on what you want. I wanted good battery life up to 50w but found 100w mods dying out too quickly for my liking so went for the triple battery mods like the rx200. Battery life is my main decision maker, with the battery output comes the bonus of higher wattage support. Never bothered about the colour or weight (heavy handed) as I find the rx200 and the like very light weight until you put them in a pocket. Best quality of a mod I have seen is the YiHi range but I find them excessively expensive for what you get. DNA200 mods tick all the boxes but they average £120. I have a primary mod DNA200. Weekend rx200 and reserve for when thing go side ways (new limitless 24, griffin 25, clieto, RDTA v2 and supreme 7ml for tanks...like to have options when I reset my hardware collection and for mod I have a Laisimo L1 (love the screen) with a 'few' batteries). I had more tanks but my baby bro is new to vaping and has already taken my backup kayfun v5, clieto and Crown 2 tanks...still trying to learn how to say no to the baby bro but fail consistently well but he knows never to mess with my Ruthless Ez duz it on ice 120ml bottles).
