Understanding Box MOD Screens: How to Read, Monitor, and Adjust Your MOD
Electronic cigarettes and vaporizers used to be extremely simple devices that took very little knowledge to operate. You had an eGo-style battery and a cartomizer. All you had to do was simply fill the cartomizer with e-juice, and make sure your battery was charged. However, nowadays, it seems as though you need to take a college course to simply operate your ecig device. Although once you get the hang of it, operating your box MOD is rather simple, attempting to use one for the first time can be a truly daunting, frustrating, and intimidating task.
This article aims to provide you with the basic information you need regarding reading the various information on your box MOD’s display screen, how to monitor it, and general rules of thumb in using and adjusting the various settings.
Box MODs vary in complexity, based on the particular make and model you are using. Some offer simple wattage adjustment capability, while others, such as the MOD that comes with the SMOK T-Priv Kit, offer temperature control, ohms meter, battery level indicator, puff counter, and even amps of the battery you are using. Let’s take a look at each of these functions individually.
Ohms Meter:
The majority of advanced bod MODs today are furnished with what is referred to as an ohms meter. An ohms meter simply informs you as to the exact resistance of the 
atomizer coil you are using. Resistances can range from sub-ohm resistances as low as 0.1 ohms, and as high as 3.5 ohms. The resistance indicator on your box MOD’s OLED screen will be indicated by the following symbol: Ω
The reason the resistance of your atomizer coil is important is due to the inverse relationship it has with the wattage you want to set your device to. That is, the lower the resistance, the higher the wattage, and vice versa. For example, an atomizer coil with a resistance of 1.8 ohms will operate optimally at around 7.5W – 8.5W, while a coil with a resistance of 0.5 ohms will work best with a wattage output of 25W – 35W.
Battery Level Indicator:
The vast majority of box MODs on the market today are equipped with an internal battery level indicator. Irrespective of whether the battery is a fixed internal one, or an external removable one, your advanced MOD will be able to ascertain the amount of life left before
needing a charge. The battery level is generally indicated by a symbol representing a battery that is in filled with the color of your screen’s digital writing (generally white or green). As the battery is depleted, the amount of the battery that is filled will slowly deplete, indicating the remaining life. Some box MOD, however, also include a percentage indicator, which displays the precise percentage of battery life remaining—very similar to many smartphones.
To experience optimal performance, it is recommended that you keep your battery charged above the 50% mark, as many devices do not offer the appropriate wattage output as the battery depletes. That is, if your wattage is set to 20W, for example, once the battery is below 50%, the box MOD will not offer a true 20W of power.
Temperature Setting:
Many box MODs today offer temperature control, sensing, and limiting capability. When used with a stainless steel, nickel, or titanium atomizer coil, the device permits you to adjust and set the temperature of the atomizer coil itself. The benefit is that it eliminates 
dry and burnt hits, while also provides for increased flavor intensity.
The temperature setting of your box MOD will be indicated with a number, followed by the letter “F” for Fahrenheit or “C” for Celsius. The letter may or may not have the degrees symbol (“°”) before it. For example, the screen of your device may read: 425°F or 425F. This would indicate that your temperature is set to 425 degrees Fahrenheit.
Typically, increasing or decreasing the temperature setting of the atomizer coil can be done using the “+” and “-” operation buttons. Simply press the “+” button to increase the temperature, and press the “-” to decrease it.
Wattage/Voltage Setting:
Virtually all box MODs that are equipped with a digital display screen includes the capability of increasing or decreasing the wattage output of the device. This relatively 
standard feature is necessary for using your box MOD with various tanks and atomizer resistances. As mentioned above, the resistance of your atomizer coil and the wattage of your device have an inverse relationship. It is, therefore, essential that you are capable of adjusting the power output of your vaporizer so that you can obtain optimal performance, irrespective of the specific coil being used.
The wattage and voltage setting of your box MOD is generally indicated by a number followed by the letter “W” for wattage, and “V” for voltage. For example, your screen may display: “14.1W” and “3.81V,” indicating a wattage of 14.1 and a voltage setting of 3.81. Adjusting the wattage and voltage can be easily accomplished by using the “+” button to increase the power, and the “-” to decrease it.
Puff Counter:
Another very common feature of box MODs is the included puff counter. A puff counter is essentially a timer that is activated the moment the fire button is pressed, and is 
deactivated once the fire button is released. The primary purpose of this feature is to alert you as to the length of your puff, which is beneficial due to the automatic shutoff safety feature that the majority of box MODs are equipped with. In order not to over-drain the battery, preventing overheating of the atomizer coil, and a way in which to limit the length of accidental firing, the automatic shutoff feature is generally activated after 10 seconds of continuous firing. In order for you to be aware of when the cutoff will occur, most box MODs include a puff counter.
Very similar to a stopwatch, the puff counter will be indicated by a timer that is read in 1/10th second intervals, and counts upward. As such, when you first press the fire button the counter will read 0.1S, indicating that the button has been pressed for one tenth of a second. The counter will rapidly increase until you reach 1.0S, which represents the fire button having been activated for one second.
