Hoping someone can clarify some battery questions regarding this device....
Is there anything you need to do in Escribe to properly setup your batteries? For example, I noticed that when I charge it, it never goes above 99%. Then when it reached 0% during use, it still works. My other DNA 200 device has a built in battery and it automatically shuts off at about 12%, this one does not seem to do that.
The DNA200 seems to use both the watt hours and the battery voltage to calculate the battery percentage aka battery bar.
I believe I read somewhere that you should not let the batteries drain all the way, and that is probably why my other DNA mod shuts it off at 12%. If I am using it all the way at 0%, does it make a risk that the battery may explode?
Not to worry about regulated mods draining your batteries too far down. They won't let you drain them too far down, unless it malfunctions. You can set the DNA to stop draining at a higher voltage too by adjusting the cell cutoff.
Can you insert different sets of batteries in the device or once you set it in Escribe, you have to stick with same 3 batteries? For example 3x 3000Mah then 3 x 2500Ma
You can, but the battery bar/percentage is going to act slightly differently between the two sets. Unless you change the watt hours with EScribe each time. Personally I wouldn't bother changing EScribe each time.
What would happen if you insert 2 2500 Mah batteries and 1 300Mah?
Not generally a good idea since as they drain, the voltages will be different from each other. If it is an emergency, would it work? Yes, it would probably be fine. The biggest danger is one battery draining too low. But the DNA won't let that happen anyway.
EDIT: If I use 3 x 3000Mah, what should the proper config be in the Mod Manufacture settings around battery?
Three 3.7v cells in series would be 11.1v. Three 3000mah batteries in series is still 3000mah. If your battery bar isn't working right, the calculated watt hours is probably a bit too high. So if you want, adjust down a bit and check the gauge.