I believe someone in this thread mentioned this in passing, but I'd like confirmation.
Is the Echo true 3.
7V? That is, like the Riva SE and KGO (at least the one I got from Hoosier E-Cig Supply) and
unlike the 3.2V eGo (and most fat batts).
Also, I'd be interested in comments about the
taste from the Echo cartos, e.g., relative to eGo-T attys/tanks (which
don't impress me) on the one hand ... and Smok Tech dual coil, Bloog MaxX Fusion, Leo, or Boge 2.0 cartos (all of which
do impress me).
Bloog MaxX Fusion auto batts also are excellent (e.g., no primer puff or sound activation). The problem I (and others) have these days with automatic batteries is that (by necessity) they are
unsealed. I've killed several Bloog and Leo (original unsealed version) batteries with juice dripping through the battery end hole of the cartos.

I love that! "An english bloke"! Scott Bonner (igetcha) is one of the two most prolific and famous video reviewers in vaping (along with GrimmGreen). [FYI: I would never tease a newbie about something like this. But, johnny, you ain't no newbie.

Who ya been watchin' during the past year? MoobyGhost reruns?]