Low powered variable voltage E-Cigarette batteries under perform at higher power settings.

This article investigates the battery performance of six brands of variable voltage electronic cigarettes (ECs) and finds that all batteries undersupply power when powering an atomizer during simulated vaping, particularly at higher power settings. This behavior is not consistent with battery internal resistance and is suspected to be current-demand related. The authors conclude that studies seeking to associate EC power with psychological, physiological, or toxicological effects should measure the actual power supplied to avoid negative bias, especially at power settings above 8.5 watts. They also recommend that the FDa should include verification of product performance claims in the market approval processes and recommend inclusion of tests that evaluate basic device performance across the entire range claimed by the manufacturer.

Floyd EL, Subedi S, Wagener TL, Johnson DL, Oni TM. Low powered variable voltage E-Cigarette batteries under perform at higher power settings. Inhalation toxicology. 2020;32(3):110-114. doi:10.1080/08958378.2020.1748145