JOYE 510 MEGA XL Battery 280mah The JOYE 510 Mega XL Battery is 89mm slightly longer and rated at 280mah. This battery can last twice as long as the regular Joye 510 battery. Vape longer on a single charge! Note: This battery will NOT fit inside the standard PCC Case. For PCC charging of this battery you must use the Mega Personal Charging Case. The manual battery is for the user who wants full control of the electronic cigarette. It allows the user to manually turn on the battery to heat up the atomizer. The longer the atomizer is on, the more vapor produced. The manual battery is generally the more popular option for experienced vapors The automatic battery is usually preferred by the novice electronic cigarette user. The battery has a built in diaphragm that senses air flow. The battery turns on when the user draws on the cigarette and turns off when the user stops. This automatic feature has a built in safety which turns off the cigarette after five seconds. This limits the user the amount of vapor received.