Article: You can usually find this information in the users manual or instruction booklet that came with your vape pen. Integrated batteries typically take the form of an elongated tube or cylinder (which attaches to the cartridge, or the part that heats the e-liquid), whereas removable batteries are housed inside casing of the pen itself. The majority of vape pens use "510-Thread" batteries, which have a universal design that makes them compatible with different cartridges. Your vape pen's battery may feature colors, text, or other markings distinguishing it from the cartridge. First, plug the AC adapter into a nearby electrical outlet. Then, insert the large end of the USB cable into the adapter and connect the smaller end to the corresponding port in your pen. Depending on the model you're using, you may need to unscrew the battery from the cartridge in order to access the charging port. Always use the charger and cable that came packaged with your vape pen. Different units sometimes run on higher voltages, and too much juice could cause your pen to overheat or even explode. Never attempt to charge your vape pen with a laptop, mobile phone, or any other device that could potentially be damaged in the event of a short or surge. Charging times for different batteries can vary from 1-4 hours. You'll know your battery is fully charged when the indicator light turns green or begins blinking steadily. On certain models, the charging light will shut off when the battery reaches 100%. Situate your vape pen away from any nearby flammable objects (such as blankets or upholstered furniture) while it's charging to reduce the risk of fire related to overheating. Once your battery is fully charged, remove it from the charger unit and screw it back onto the cartridge to begin vaping again. When you've depleted your vape pen's battery to a certain level, a red light will appear on the LED display. Remember: red means "stop." Hold off on using your vape pen again until it's been charged. Attempting to use your vape pen in a low-battery state could lead to shorts, battery death, or other defects. If your battery stops holding a charge or begins draining faster than usual, take it as a sign that it's time to replace it.
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See if your vape pen has an integrated or removable battery. Hook your vape pen up to its charger using the included USB cable. Wait for the battery to finish charging completely. Watch for the red light that tells you it's time to recharge your battery.