Answer: Your coil should last anywhere from 1-4 weeks, depending on the liquid/power setting used.
How do I know my coil/cotton is bad?
Answer: When your coil/cotton goes bad you will notice a change in flavor, a slight burnt taste, or a severe burnt taste.
Why doesn’t my battery last all day?
Answer: There are several things that may cause this, if you are using a single 18650 battery device you may need to upgrade to a battery that holds more of a charge like the (Samsung 25r 2500mah 18650), also check and make sure you are not using the device at its max wattage if you are you may need to carry an extra battery or upgrade to a device that uses more than one battery or a battery of a bigger size. (Ex 26650).