Power Bank Capacity Explained (mAh Guide) – What Size Power Bank Do You Really Need? Buying a power bank sounds simple until you start looking at the specifications. You will see numbers like 5000mAh, 10000mAh, 20000mAh, and sometimes even larger capacities. For many buyers, these numbers can be confusing. Does a bigger number always mean a better power bank? How many times will it charge your phone? And which capacity is actually right for your needs? If you have ever asked these questions, you’re not alone. In this guide, we’ll explain what mAh means, how power bank capacity works, and…