Power banks range wildly in size and capacity, and the right one depends on how you actually travel rather than the biggest number available.

Match Capacity to Your Trip

A 10,000mAh bank comfortably charges a phone two to three times, which covers most single-day outings. Longer trips or charging multiple devices call for 20,000mAh or higher, though that adds noticeable weight and bulk.

Features Worth Paying For

Fast charging support that matches your phone’s charging standard makes a real difference in how quickly you top up. If flying, check airline battery capacity limits before buying, since very high-capacity banks can be restricted from carry-on luggage.

Choosing based on your actual trip length avoids carrying more bulk than you will ever really use.