The Yocan Evolve-D has a powerful 650mAh battery that provides long-lasting performance. On a full charge, you can expect the battery to last for several vaping sessions, depending on your usage habits. The battery should last throughout the day with moderate use for most users. However, heavy users may need to recharge the battery more frequently. Fortunately, the Yocan Evolve-D features convenient USB charging, allowing you to recharge the battery quickly and easily whenever required.