If your Evolve Plus wax pen isn't performing the way it should, check out our replacement batteries and make your vape run like new. The batter includes an innovative built-in silicone wax container for storing your extra wax. Evolve Plus Battery Features: *Use: Concentrates *Micro USB Charging *Built-In Dab Jar (in base of battery) *Battery Capacity: 1100mah What's in the Box: 1x - Evolve Plus Battery by Yocan