I've been running the IPV2s for the last 5 months and its the perfect size for me. I was about to pull the trigger on a IPV3 Li V2 until I saw a video and the thing was the size of a brick! Are there any actual smaller TC boxes that are comparable in size to say the IPV2s or Hanamod box that have replaceable 18650 batteries dual or single and can do at least 100 watts? It seems like box mods arent following common technology, instead of putting bigger things into smaller packages their putting bigger things into bigger packages...