Think of voltage as the power provided by your battery.
Think of resistance of an atomizer as how much power your atomizer is drawing out of your battery.
So, the higher the voltage of an e-cig, the more potential power it has. And LOWER the resistance of your atomizer, the more power it's drawing from the battery.
A Kr808 is 3.7v. A 510 and an eGo are both 3.2v. I am unsure which the Vgo is, but one of those two.
A typical Kr808 cartomizer is somewhere around 2.5-3 ohms (ohms = resistance). A 510 atty is 2.5ohms. An LR 510 atty is 1.5ohms.
These things together indicate the total power you are
vaping at, in wattage. To find the wattage you are
vaping at, multiple the voltage by itself, and divide by the resistance of your atomizer.
Example: A 3.2v 510, running a 2.5ohm atomizer.
3.2 x 3.2 = 10.24
10.24 / 2.5 = 4.096 watts
And then there is mAh, which indicates the total power of the battery. This indicates battery life per charge. So the 510 is 180mAh, the Kr808 is 280mAh, and eGo is 650mAh. The Vgo is probably close to the eGo in mAh.
The higher the mAh, the safer it is for the battery to run LR atomizers.
But there's another element in all this. And that is Amps. Your battery has a certain amount of available amperage, which is basically how much power it can safely provide at any given moment.
The Amperage is most standard e-cigs is 1 amp, or 1.5 amps.
But LR atomizers require 2.5 amps to run safely. This is why eGo's and similar "cone-style" e-cigs sometimes die running LR's, even though they have enough mAh. They don't have sufficient amperage to do so safely.
That said, many people run LR's on their eGo's and Vgo's and never have a problem. But, for the flip side of that, I killed a brand new eGo battery in a week, by running LR's on it.
If you want to run LR's, I would strongly suggest you get a mod. But in that case, you need to learn more about safe batteries to use. If you are interested in mods, take as much time as you need figuring this out. It's important to your safety.
Here's a really good guide by Rolygate that talks about amps, voltage, batteries, etc. It's aimed at mod-users, but you'll learn stuff anyway. I've read it several times!
http://www.e-cigarette-forum.com/forum/ecf-library/129569-rechargeable-batteries.html
