ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

An electrochemical device includes a housing, an electrode assembly, and a first electrode. The electrode assembly is accommodated in an accommodation cavity of the housing. The first electrode includes a first plug-in portion. The first plug-in portion extends away from the accommodation cavity and protrudes beyond an outer surface of the housing. The first plug-in portion is configured to be snap fitted to a first jack of an external device. The first plug-in portion is provided with a groove or an elastic bulge. The groove or the elastic bulge of the first plug-in portion is configured to be snapfitted to a first elastic bulge disposed protrusively on an outer wall of the first jack or the first groove provided on an inner wall of the jack respectively..