Do I Have To Switch Off My 21st Century Smoke Electronic Cigarette When Unused?

No, there is no switch. Only when you inhale or draw through the electronic cigarette is the battery activated. When you stop drawing air through the e cigarette the device turns off automatically. Like any rechargeable battery though, an unused product will slowly drain and eventually need to be recharged. Since the battery never ignites or heats up, it is safe to store immediately after use. An enclosed card included with each order states: If the electronic cigarette is not in use for a long period of time, it is best to unscrew the battery. There is a slow drain when connected.