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Why is UL certifying e-cigarettes?

There has been an increase in fires and injuries relating to e-cigarettes in recent years, attributed to poor quality or misused lithium batteriesi.

UL is certifying e-cigarettes to enhance consumer safety. UL 8139 provides manufacturers with the appropriate requirements and methodology to confidently evaluate, test and certify e-cigarette and vaping devices for electrical and fire-hazard safety as a system.

What is the scope of UL 8139?

UL 8139 evaluates the safety of the electrical system, including batteries, chargers, and protection circuits and controls, in electronic cigarettes and vaping devices, also known as ENDS (electronic nicotine delivery systems). The requirements include:

  1. Determining that lithium cells are operated within their safety windows
  2. Assessing the Battery Management System [BMS] for both normal use and foreseeable misuse
  3. Evaluating compatibility among interconnected systems as a whole
  4. Factoring in wide environmental parameters and conditions expected
  5. Testing for mechanical stress reasonably expected in use/misuse
  6. Requiring a mechanism that directs venting away from the inhaler
  7. Supplementing marking and instructions for safe use

Is UL testing the consumables?

UL 8139 does not apply to the consumables, such as e-liquids and other aerosol substances, wicks, and other particulate matter, and also does not consider the physiological and psychological effects of any consumables used with the product.

Does the standard apply to products with removable battery cells?

The standard does not evaluate the performance of e-cigarettes with removable battery cells.

Does the battery need to be certified?

The standard provide three solutions for addressing the cell requirements.  Cells shall comply with at least one of the following:

  1. The Standard for Lithium Batteries, UL 1642; or
  2. The Standard for Household and Commercial Batteries, UL 2054; or
  3. The Standard for Secondary Cells and Batteries Containing Alkaline or Other Non-Acid Electrolytes – Safety Requirements for Portable Sealed Secondary Cells, and for Batteries Made From Them, for Use in Portable Applications, CAN/CSA-E62133 and UL 62133.

Where can I find a list of UL certified e-cigarettes?

You can verify UL certified e-cigarettes by going to the UL Online Certifications Directory.  You have various search options including Company Name or Standard Number.

Where can retailers and manufacturers submit e-cigarettes for testing?

Please submit your request or email Ctech@ul.com.

What is the certification process?

The certification process for UL 8139 is typical of any product test at UL:

    • Product Submittal
      • Applicant sends the product to UL for initial assessment
    • Product Investigation
      • UL engineers thoroughly test and inspect the product to determine compliance with requirements
    • Authorization to use the UL Mark
      • Once compliance is determined, the Applicant is authorized to use the UL Mark for products manufactured at agreed upon manufacturing locations
    • Field Services Inspections
      • Throughout the lifetime of the UL certification, products undergo regular inspections at the manufacturing facility to verify continued compliance

Back to UL 8139 Electrical Systems of Electronic Cigarettes >>

i According to the Electronic Cigarette Fires and Explosions in the United States (2009 – 2016) report by the U.S. Fire Administration, there has been an increase in e-cigarette fires and explosions resulting in personal injury and/or property damage. Poor quality and misused lithium batteries are the main causes of e-cigarette fires and explosions.