What you have is an eGo-T. Totally Wicked carries Joyetech products. So, it's a good enough version of what it is. Just a basic eGo battery with an eGo-T atomizer.
The eGo-T was my first kit. I moved on quickly. It wasn't terrible, just not quite enough umph. But, the battery can be used with other atomizers and cartomizers also. It can be used with any 510 or eGo threaded atty/carto.
However, since it's not variable voltage, you'll need to make sure to get LR (low resistance) atties/cartos to use with it. It works best with 2.0 ohms (for me anyway).
And, even the eGo-T atty is ok if you get a Twist, or other variable voltage battery, to use with it to give it a little more heat.