It indicates an expandable section or menu, or sometimes previous / next navigation options. Are banks closed on a national day of mourning? When are banks closed? Bank transactions on holidays ...

Of course, you're getting limited power here, but you should be good to charge most phones with the power bank's 5,000mAh capacity. It also has a USB-C port that can be used for recharging the power ...

But when your electricity does go out, having a personal portable power station can help you keep your phone on and the space ...

Or even having reliable just-in-case backup power when yours, for whatever reason, turns off. And to harness that sort of ...