Ms. HollyBerry any idea if you bought a gen 1 or gen 2 kr808? Here's a brief description of the differences and the run time:
Gen 1- Start at 4.2v under load and work themselves down to 3.7 (and lower) as they are used. Vapor 4 Life has newer batts (king diamond and stealth series) that use a new cell design that enables it to hold it's voltage longer than it's predecessors. Here's where the averages get difficult, these batts come in different sizes. All with a 2.2ohm carto averages are- Shorty 119 minutes, Regular 158 minutes, XL 247 minutes
Gen 2- First introduced by Bloog, but now many companies offer them. They are regulated to 3.6v and have a slightly higher mah (220mah on a shorty compared to the gen 1 at 180mah) to them. These are the best option (and why the companies that sell them sell these cartos) for the new horizontal coil cartos for the kr808. 3 sizes again, all with a 2.7ohm horizontal carto- Shorty 161 minutes, Regular 202 minutes, XL 272 minutes average
If it's an unregulated batt (gen 1), wouldn't suggest using horizontal coils on them, but you can use a large variety of other cartos on them. With the regulated batt (gen 2) you're best bet is using the horizontal coil, though you can use other cartos with them, the lower voltage will hamper their performance compared to the unregulated batt. If you check out my blogs have a few comparisons of the new v4l and bloog mf batts.
Rawrscary sir you'll be surprised how many companies have people in china in the ecig world. Bloog is not the only one....