The next battery pack you buy should have USB-C Power Delivery. In addition to being able to charge most phones faster (like an iPhone from 0% to 50% in 30 minutes), a PD port can put out enough juice to charge a laptop or a Nintendo Switch on the go, no power outlet required.
Anker’s newest pack packs 20,000mAh of capacity into a surprisingly small package, and while its 18W USB-C port isn’t ideal for large laptops, it should be powerful enough to extend the runtime of smaller laptops and tablets. Get it for $48 today with promo code ANKER4181.