may I recommend the battery that I've used in my Vamo v2, v3, v5, Evic, Zmax v3 and Cana DNA30. It is a Panasonic NCR18650PF, 10amp CDR. They have been in use since Feb 2014 and still today work for a full 24 hours (excluding ~8 hrs sleep),
vaping ~5-10 ml daily. I've had 4 that I use in rotation and 6 more waiting for the original 4 to die. Since the Vamo's max output current is 5 amps the PFs are a good match. I love 'em think you will also. Google Orbitronics