NEW!IEC 62576:2018 is available as IEC 62576:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62576:2018 describes the methods for testing electrical characteristics of electric double-layer capacitor cells (hereinafter referred to as capacitor) to be used for peak power assistance in hybrid electric vehicles. This second edition cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:a) information on applicability of this document has been added in Clause 1;b) the definitions of some terms in Clause 3 have been improved;c) the description of test procedures in Clause 4 has been clarified;d) information on endurance cycling test has been added (Annex E).