When using both of the mods together, its always a very very good idea to check the voltages of your batteries frequently. I keep my multi meter at my charging station. Heck I should wire up a box with a voltage meter attached to it, just for checking batteries. That is why I lable all of my 5v batteries, each set with a different letter. The batteries for the 3.7 I write a big "S" on it so that I know it is for my 3.7. It is not good to put a fully charged batt, and a discharged bat into the 5v box. That is how batteries can "vent" and can get a little crazy. These batteries are protected. Keep in mind, a protection circuit can fail, which is why it is always good to be safe with these batteries. This is why I tell my customers not to charge them unattended, and do not leave them in the charger over night.
Great info Mike on the beat cartos. We are going to see that more often now that they are coming up with better cartos, that can last longer. resistance changes over time in an atty or carto, and i think if it starts to under 2 ohms, the circuit will kick in on the 5 volt. This is why the 1.5 dual coils will not work on the 5 volt. I have heard by at least one other vaper of a 5 volt box mod that they do work, but even if it did, it would be way too many watts, and would get way to hot. Every time i have tried one the protection circuit kicked in.
If you have been through the trouble shooting guide, pop in a new carto and give that a whirl. I dont think I included that nice tidbit in my directions.
New stock arrives on Wednesday, and I should have more black 3.7s with master switch in stock and ready to ship by Friday.
I still have a few available. Check the list above, and PM me with what you want, and I will let you know if i can do it.
I have at least one of everthing listed above.
Steve
Low resistance works dynamite on the 3.7
Ain't that the truth! I can be vaping along happily on the 5v and the led starts blinking. Just don't see it coming. On my little 3.7's I can tell when the batt gets to about 3.7-3.8v's.