4. Buy an external charger if you don't have one; most drug stores have them. Portable smartphone battery chargers are getting better and less expensive. Most drug store chains have them near the counter, but you will pay more for the convenience. But if you need one right now, that is a good place to look.
Companies such as Anker and Aukey sell high-quality, high capacity chargers on Amazon. Consider buying one before the next storm. Some of the new one have capacities approaching 30,000 mAh, which is enough to charge an phone over five times.
5. Still have power but want to charge a phone quickly without using a wall socket? Plug it into the USB port on your TV. Most newer TVs have one.