FDA Takes Action on Youth E Cigarette Usage With Warning Letters to Retailers Oncology Nursing Society EGO T CE4 Vape Pen Review. The Build Design, Performance, and More About EGO T CE4 Vaporizer UPENDS VAPING New eGo T Ce4 Electronic Cigarette 29,000 L.L. Battery capacity: 650 mAh Portable pen style Smoke in public places Harmless to others and the environment Save the smoking cost of nearly 80% As e cigarette use grows, more research needed on long term effects of vaping American Heart Association Electronic Cigarette eGo CE4