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While it’s big compared to some of the others on this list, this chunky model is the best power bank to invest in if you want a versatile and impressive battery to charge up your laptop, iPad, phone and everything in between. You need power for your phone: The 3,000mAh battery inside is plenty to keep your Apple Watch going, but that isn't enough power to get you even halfway charged on an iPhone 15, and even less on bigger phones. Capacity: The capacity of a power bank is measured in milliampere-hours (mAh), but this can be a little misleading because the amount of power you get out depends on the cable you use, the device you are charging, and the charging method (Qi wireless charging is less efficient). You will never get the maximum capacity. We try to provide an estimate of what you’ll get in terms of charges for devices. To test charging times and claims, we charged a Samsung Galaxy S23 Ultra and an Apple iPhone 15 to determine how many charges each battery offers these devices. We chose a common smaller battery phone as well as our best phone overall for this purpose. The best power banks we have tried have all come from Anker, but that doesn't mean Anker is the only brand you should consider. All of the power banks on this list passed our testing, traveling with us on the road and powering our devices at home. Anker is the best, but these batteries from Baseus and Otterbox performed well.
The Anker Prime series of Power Banks, including the Anker Prime 27,650mAh Power Bank (250W) and the Anker Prime 20,000mAh Power Bank (200W), are for people who truly love to geek out on power banks. If you came looking for the absolute best power bank you can buy, this is the best we've tried. One USB-A port (18W) and one USB-C (18W). Can charge most smartphones two or three times (10,000 mAh). The three basic rules that have kept me safe (thus far) through testing dozens and dozens of batteries are:
DeWalt 10,000mAh 2-Port Powerbank 215-1643-DWE
If you loved the clear craze that gave us a wave of translucent electronics in the 1990s, then you will immediately see the appeal of Shargeek’s power banks. A see-through case provides a clear view of the ports, chips, and bundled rechargeable Samsung Li-ion batteries inside this portable charger. The color display gives you a detailed readout of the voltage, current, and power flowing in or out of each port. If you dig into the menu, you can find stats showing temperature, cycles, and more. You don't have a magnetic phone: You don't need an iPhone to enjoy the magnetic charging, but you'll need a case that lines up your phone with Apple's MagSafe wireless configuration, or else your phone won't charge properly. The Anker Nano is only 5,000mAh, but that doesn't mean it can fully charge a 5,000mAh phone battery like you'll find in the Galaxy S23 Ultra. Power banks are about 60-70% efficient, depending on the phone's technology, so this power bank is good for charging an iPhone 15 to nearly full, but that big Ultra will only get about 65% charge. The most important question to consider when buying a power bank is what will you be charging? If you are charging a small smartphone and that's all, a simple power bank will suffice. If you plan on charging a laptop occasionally as well, or many devices at once, you'll want something with more power and more features. A big power bank with 20,000mAh or more will deliver almost five charges for an iPhone 13 – and we’d recommend this size if you want to charge bigger batteries like those in an iPad or laptop. These are also about as big as you can bring on a flight (more on that below).
That means I could twist my phone sideways into landscape mode and use the Baseus power bank as a portable stand for Apple's new StandBy mode, which is one of my favorite features on iOS 17, and certainly the one I use the most often.There are plenty of combination power bank and some other device, but the Tylt Bottle 2 actually makes sense because we're usually carrying an insulated water bottle anyway, so we might as well screw a battery onto the bottom. With a 5,700mAh capacity, the Tylt Bottle 2 is just enough to get us through a very busy day, or keep the phone powered while we play games at the cafe.
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