Just an update.... I went ahead and ordered a SmokeStik battery and pack of cartos. The battery fits in the Direct E-Cig charger, and works. The SS cartos work well on the Direct E-Cig, and the Direct E-Cig atty fits and functions on the SS battery well... 
The only difference I see between the SS battery and Direct E-Cig is that the hole in the SS battery is MUCH larger than the pin-hole size in the Direct E-Cig. I would be more apt to drip in the Direct E-Cig atty/ automatic battery if I wanted to because of this.
I actually like the SS cartos with high full flavor. They hit well with a nice amount of vape and throat hit. MUCH better than the Direct E-Cig cartridges. Now, for the cost of an SS battery and cartos, I have a nice set for the times when I want to vape ingognito in public...
Mystery Solved...
Thanks Everyone!!
The only difference I see between the SS battery and Direct E-Cig is that the hole in the SS battery is MUCH larger than the pin-hole size in the Direct E-Cig. I would be more apt to drip in the Direct E-Cig atty/ automatic battery if I wanted to because of this.
I actually like the SS cartos with high full flavor. They hit well with a nice amount of vape and throat hit. MUCH better than the Direct E-Cig cartridges. Now, for the cost of an SS battery and cartos, I have a nice set for the times when I want to vape ingognito in public...
Mystery Solved...