Supercapacitor from VINATech Radial EDLC's face challenges when exposed to a combination of high temperature and high humidity over an extended period of time that is outside the defined operating limits. As a consequence, a black substance develops as a typical characteristic at the (-) pin, which irreversibly destroys the conductor paths located in the vicinity of the component. We also speak of the betting phenomenon. This phenomenon is manufacturer-independent, to the best of our knowledge all manufacturers are affected. This is a fundamental technological problem. After years of intensive research, VINATech has developed a permanent shutdown measure for its 2.7 V and 3 V supercapacitors, for which a patent has been applied for. After more than one year of continuous cycle tests at 65°C and 90% relative humidity, no wetting was detected. The WEC series is pin-to-pin compatible to the well-known VEC series and other super capacitor series. https://elecena.pl/product/15366100/wec3r0-256qg-super-capacitor-25-f-3-v-16-x-25-mm 2018-12-16 https://elecena.pl/product/15366100/wec3r0-256qg-super-capacitor-25-f-3-v-16-x-25-mm 2021-05-03 https://elecena.pl/product/15366100/wec3r0-256qg-super-capacitor-25-f-3-v-16-x-25-mm 2025-12-11 https://elecena.pl/product/15366100/wec3r0-256qg-super-capacitor-25-f-3-v-16-x-25-mm 2026-01-23