I hate running out of power. Everybody does. While our gadgets have advanced in many ways, battery technology has been slow to improve. That’s why you’re looking to buy a power bank. A good portable charger is a handy backup that can keep your smartphone, tablet, and maybe even your laptop going for longer. I’ve been testing power banks for many years. I’ve tested more than 100 portable chargers. But you only really need one or two. Most folks should buy one of the first four power banks I recommend, but there are a few other unique use cases, so I’ve included a few extra options. Read the Best MagSafe/Qi2 Power Banks for more magnetic wireless chargers, and Best Laptop Power Banks or Best Portable Power Stations for more power. Updated May 2026: I added a power bank from BMX, more details about capacity, a new FAQ section on charging slowly, removed some older devices, and updated prices. This is the only power bank you need. Anker combines style and substance with this versatile power bank that packs a whopping 25,000-mAh capacity and is capable of delivering up to 165 watts to two devices (100 watts for a single device connected via USB-C). I love the rounded edges, the retractable, flat 2.3-foot USB-C cable up top, and the clever braided 1-foot USB-C cable that doubles as a carry loop. It has a display to show the remaining battery, charging rate in and out, battery temperature, and health. It supports pass-through charging and takes around two hours to recharge. OK, you don’t really need this many stats, but a precise idea of how much power remains is useful and reassuring. I love the built-in cables, because they ensure you’re never caught without one. This is also below the limit for power banks on flights, so you can travel with it. Anker’s Laptop Power Bank fast-charged everything I tested it with, including multiple smartphones, an iPad, a Poco tablet, a MacBook Air, and a Chromebook. You can charge four devices simultaneously without any issues. After