Now that there are more Echo users it was suggested we start a thread for the New Echo. It is an awesome PV and deserves its own thread. The Standard Echo comes with either the 650 or 1300 automatic batteries. It has a 3 ml carto that holds closer to 3.5 on a new one and 3 ml on refills. The carto is designed to last for at least 100 refills. The battery is awesome and lasts me for 18 hours of vaping and the carto lasts me 12 hrs until I have to refill. I thought I would repeat some of that for new people joining the thread.