Your missing the way that all vv mods work.. Even provaris are chip limited by amperage. I'm not gonna debate it because it's already been done, but what device puts out 6v @ 4 amps with a single battery.. None unless your going to much higher priced DNA mods.
You have to used stacked to reach full output in the zmax, this is by it's design.
Your only providing 4.2v no matter what amps the battery can handle. The chip can only boost 4.2v to 6v when under 2.4 amps. Above 2.4 amps you need to provide it with stacked voltage of 6.4-8.4v : the chip can then easily ramp down to provide max power 6/15 up to 4amps current.
Single battery is 2.5 amps max, use ohms law, optimal ohms is 2.4 providing 6v/15w @ 2.5 amps
See -
https://docs.google.com/spreadsheet...xZLVd5aDkwUEJEZXc&f=true&noheader=false&gid=1
Not sure how your testing that but the vivi 2.4 is getting 6v /15w
I wish!! It's only outputting 3.7V at 5.4W on the 2.4 ohm Vivi with a fully charged battery!
Stacked is 4 amps max.
You guys missed that part of the thread probably.
Please review my blog - "this knowledge is literally power to vapers"
http://www.e-cigarette-forum.com/forum/blogs/jeremyr/5666-knowledge-literally-power-vapers.html
And stacked info I've found -
http://www.e-cigarette-forum.com/fo...ng-info-stacked-batteries-regulated-mods.html