Persistent mechanoluminescence (ML) with long lifetime is highly required tobreak the limits of the transient emitting behavior under mechanics stimuli.However, the existing materials with persistent ML are completelytrap-controlled, and a pre-irradiation is required, which severely hinders thepractical applications. In this work, a novel type of ML, self-chargingpersistent ML, is created by compositing the Sr3Al2O5Cl2:Dy3+(SAOCD)powders into flexible polydimethylsiloxane (PDMS) matrix. With no need forany pre-irradiation, the as-fabricated SAOCD/PDMS elastomer could exhibitintense and persistent ML under mechanics stimuli directly, which greatlyfacilitates its applications in mechanics lighting, displaying, imaging, andvisualization. By investigating the matrix effects as well as thethermoluminescence, cathodoluminescence, and triboelectricity properties,the interfacial triboelectrification-induced electron bombardment processesare demonstrated to be responsible for the self-charged energy in SAOCDunder mechanics stimuli. Based on the unique self-charging processes, theSAOCD/PDMS further exhibits mechanics storage and visualized readingactivities, which brings novel ideas and approaches to deal with themechanics-related problems in the fields of mechanical engineering,bioengineering, and artificial intelligence