Special report analysis of portable power station industry Portable power station, also known as large power bank, outdoor power supply, is a small energy storage device with built-in lithium battery and can be used with solar panels.  /*! elementor-pro – v3.17.0 – 01-11-2023 */ .elementor-widget-table-of-contents .elementor-toc__header-title{color:var(–header-color)}.elementor-widget-table-of-contents.elementor-toc–collapsed .elementor-toc__toggle-button–collapse,.elementor-widget-table-of-contents:not(.elementor-toc–collapsed) .elementor-toc__toggle-button–expand{display:none}.elementor-widget-table-of-contents .elementor-widget-container{min-height:var(–box-min-height);border:var(–box-border-width,1px) solid var(–box-border-color,#9da5ae);border-radius:var(–box-border-radius,3px);background-color:var(–box-background-color);transition:min-height .4s;overflow:hidden}.elementor-toc__header{display:flex;align-items:center;justify-content:space-between;padding:var(–box-padding,20px);background-color:var(–header-background-color);border-bottom:var(–separator-width,1px) solid var(–box-border-color,#9da5ae)}.elementor-toc__header-title{font-size:18px;margin:0;color:var(–header-color)}.elementor-toc__toggle-button{cursor:pointer;display:inline-flex}.elementor-toc__toggle-button i{color:var(–toggle-button-color)}.elementor-toc__toggle-button […]