This battery features PCB protections, locking functionality and a spring loaded connection. Designed for evenly distribute power and connection to your batteries and cartridges as well as attachments, the Atmos Nail Replacement Battery is extremely efficient and convenient. Perfect for vaping season, this battery provides long lasting battery life throughout the day so you won’t ever have to worry about recharging. Perfectly compatible with a cordless 510 charger, the Atmos Nail Replacement Battery is the perfect addition to your collection. At an affordable price, make sure to get one today!