How Long to Charge a Vape Pen? A Comprehensive Guide How to Know If Your Disposable Vape is Fully Charged Vape Wholesale Global How to Charge Your Vape: A Step by Step Guide How Long to Charge a Cart Battery? Charging Times by Size + Troubleshooting (2026) Unplug your vape when it's fully charged to reduce the risk of fire. Rechargeable vapes contain batteries which can overheat when left charging for too long and that means fire risk.