$22.99 The eGo Twist 650 or 1000mAh replacement batteries. Simple twist the end cap base to choose your voltage 3.2 - 4.8 volts. Please read the full description below for information on the 5 click on/off safety feature. Rechargeable with only Joyetech eGo/eGo-T/eGo-C USB Battery Chargers. The eGo Twist battery does not include charger.