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The most important thing to do is to match the battery’s output to your phone’s input. For example, if you have an iPhone, be sure the battery has its own Lightning connector or supports USB-A-to-Lightning or USB-C-to-Lightning cables. Wireless charging has become popular because it allows you to power up compatible devices without a cable. Qi is the dominant standard for compatible Android phones (up to 18W) while Apple iPhones rely on MagSafe charging (up to 15W). iPhones will charge wirelessly on Qi chargers, but only at 7.5W. In terms of charging, this massive power bank can charge an iPhone 15 more than five times. It can charge a big Galaxy S23 Ultra's 5,000mAh battery three-and-a-half times. Best of all, it charges at the fastest speed available on most of your favorite phones (excluding Oppo/OnePlus's unusual SUPERVOOC battery). EnergyCell’s portable charger is as basic as power banks get, with just a micro-USB input, a USB-A output and no support for any fast-charging standards. What’s more, it’s slow. The USB-A output is specified as 10W, but in our tests we measured the output at between 7W and 9W depending on the phone. A 15-minute charge only raised the level on our test smartphone by 7%.
The Sanag portable charger ships with a 10,000mAh battery which should suffice for most users. Along with the built-in cables, you can also use the USB-A and USB-C ports onboard to charge external devices. With that out of the way, let’s discuss the other features. The USB-C cable can be used to charge an Android phone or an accessory. iPhone users can use the lightning cable and the micro-USB cable can turn out to be useful if you have an older accessory. As for the fourth cable — it’s a USB-A cable that can be connected directly to a wall charger to recharge the power bank itself. We find that medium power banks, around 10,000mAh, tend to deliver the best balance of portability and capacity. In our tests, they’re also more likely to live up to their claimed capacity. They tend to have multiple ports for charging more than one device at once, and enough energy to charge two smartphones. A Best Buy medium power bank is a great all-rounder.
Don’t get stuck without a charger for your gadgets. We’ve picked out the best power banks to help you recharge while you’re on the go
Everybody on our gift list who got a new iPhone is going to get an Anker Nano Power Bank (22.5W) this year. This cute little charger is perfectly sized to sit beneath your favorite smartphone, plugged into the USB-C port with a little plug that opens out or hides away for a sleek look. Meanwhile, a 10,000mAh battery can give today’s flagships two full charges. A 20,000mAh battery can charge a flagship four times, or two phones two times. Some power banks have enough juice to power laptops. Of course, a higher capacity often translates to a heavier, larger, and more expensive battery. When it comes to purchasing a power bank, there are a few important factors to consider. Let's dive into them:
Brand Reliability: When it comes to portable power banks, it's essential to choose a trustworthy brand. Brands like Anker have a solid reputation for producing safe and high-quality products, ensuring your devices are charged efficiently and without any risks. Many of the best power banks come with a mid-range capacity, as it's a great balance between portability and convenience.If you're prone to forgetting your cable, some power banks can recharge your phone wirelessly. You'll just need to place the smartphone on the charger and press a button to start – you may have to reposition it to get perfect alignment, although there are magnetic models (more on those below) for the latest iPhones that'll always snap into the correct position. Magnetic power banks You don't need all those extras: The Anker Prime power bank is pricey, and if you don't care about monitoring charge Wattage or days of battery life, find another option.
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