I noticed none of them are advertising an amp rating on them except for CanVape who advertises 4amp. I wrote them to see if they had tested it and found it to be a true 4amp unit but they chose not to reply.
According to this post from the iVapeguy (iVape.net) the Lambo 4.0 is a 2.5amp unit, same as all the previous LTs. Apparently the only difference is the ability to read resistance. http://www.reddit.com/r/electronic_cigarette/comm...
Errol
Good information. I've seen several vendors stating that they (the 4.0s) are able to push low res and DC attys. I wonder how they are capable without an upgraded switch. Lies perhaps?