Keep Your Phone Juiced To The Max With The Best Portable Chargers We’ve Tested

Keep Your Phone Juiced To The Max With The Best Portable Chargers We’ve Tested

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Updated 9:50 AM EDT, Fri May 28, 2021

Benjamin Levin/CNN

(CNN) —  

Even when working from home, a power supply can be hard to come by, what with your computer, monitor, WiFi hub and other gadgets and gizmos hogging those sparse outlets. And when you’re on the go, a solid power source is especially a necessity. The solution: a portable charger to keep your phone, tablet and more juiced to the max.

So to help identify the best options for avoiding that dreaded “low battery” notification, we spent several weeks testing portable chargers — draining devices, charging them up and calculating capacities. Ultimately, we found three winners that each stole the show in their own way:

The Anker PowerCore 13000 hits all the marks in an ideal portable charger. Where it shone most was in charging capacity. It boasts 13,000 mAh (maH is a measure of how much power a device puts out over time), which is enough to fully charge an iPhone 11 two and a half times. Plus, it has two fast-charging USB Type-A ports so you can juice a pair of devices simultaneously. While not at the peak in terms of charging capacity, at just $39.99, it’s a serious bargain for so many mAhs.

The ultraportable Belkin Power Pocket 5K is almost the exact same size as an iPhone SE, but weighs even less. And, proving the old adage “big things come in small packages” correct, it packs enough power to fully charge an iPhone 11 from its singular USB Type-A port. The $29.99 price tag is really the icing on the cake.

The Belkin Boost Power Pocket 5K goes hand-in-hand with iPhones thanks to the inclusion of a Lightning port along with the USB Type A port. That means you can use the same cord to charge your phone and refill the battery. Not only that, but it’s approved through Apple’s MFi certification program. At $39.99, you’re paying a little more for the compatibility, but we think many users will find this worth it.

Benjamin Levin/CNN

Simply put, the Anker PowerCore 13000 packs a ton of value.

You can charge a lot with this thing — and quickly. The PowerCore 13000 has enough capacity to fully charge an iPhone 11 two and a half times, or two Samsung Galaxy S20s from empty to more than 90%. And you won’t be sitting by idly for too long, either, as the PowerCore 13000 takes just 41 minutes to charge an iPhone 11 to 50%, tied for fastest charging in our testing.

While the PowerCore 13000 doesn’t fully live up to its promise of 13,000mAh (we found it delivers 7918mAh), it hit a respectable 61% of what’s advertised — a percentage that put it about average among all the batteries we tested. In other words: None of the portable chargers we tested fully lived up to their claims, and the PowerCore 13000 still has more charging capacity than most others we tested. (You can read more about how we measured mAhs by scrolling down.) Plus, it’s just a few more bucks than the Belkin Pocket Power 5K for more than double the mAhs ($31.99 and $29.99, respectively).

The side of the battery houses three ports: two fast-charging USB Type-A ports and a micro-USB port to charge the battery itself. When we charged an iPhone 11 and a Nintendo Switch simultaneously, the battery barely heated up. Four LED lights alert you to the charger’s remaining battery life, with a button on the edge to turn the lights on.

The charger’s matte plastic design feels nice to the touch and resists smudging surprisingly well. It’s about the size of a full wallet, so it’s easy to carry around. And it’s durable: The charger survived our drop tests, which included a 3-foot drop onto grass and a 1.5-foot drop onto carpet, with neither external nor internal damage. (You can read more about our durability testing below.)

Overall, not only does the Anker PowerCore 13000 pack major mAhs, but it’s got two ports to spread the love and is fairly small and durable making it chock-full of value at $39.99.

Benjamin Levin/CNN

When we first encountered the Belkin Power Pocket 5K, it was hard to believe its size: just 5 inches long, 2.5 inches wide and a half-inch thick. There are few places this battery won’t fit, yet many devices it’ll charge.

It was the smallest and the lightest charger we tested; you might even mistake it for the phone in your pocket. This portable charger is really the definition of a personal power bank, easily whipped out of a pocket and held alongside your mobile device.

The charging capacity of the Power Pocket 5k is modest, but it did come closest to living up to its claimed output out of all the models we tested. While its maximum capacity is stated to be 5,000mAh, we measured it at about 3,655mAh. That’s 73% of the expected value, which is 12% better than average in our testing. While its capacity isn’t huge, it’s more than enough to bring an iPhone 11 or Samsung Galaxy S10 battery back to full life. The only significant downside we could find was the charging speed: It takes a little more than 51 minutes to charge an iPhone 11 to 50%.

The Anker PowerCore 13000 features four battery-indicating LEDs on its side alongside a button to turn them on. Around the corner are the ports: a single USB Type-A along with a micro-USB port to charge the battery with the included cable. Like the PowerCore 13000, the Pocket Power 5K received no superficial or internal damage during our drop testing. And you can rest assured that even if you do break it, it comes with a two-year warranty along with a generous $2,500 connected equipment warranty (which covers unlikely electrical damage to tech that was properly plugged into the Pocket Power 5K).

The wee-as-can-be Belkin Pocket Power 5K is impressive for its size. Although the capacity isn’t huge, it’s more than enough to fulfill the needs of most personal devices and small enough to keep in your pocket everywhere you go.

Benjamin Levin/CNN

The Belkin Boost Charge Power Pocket 5K offers a bit less capacity than the Belkin Power Pocket 5K, but it’s a match made in heaven for iPhones — and it charges faster, too.

Along one side of the Belkin Boost Charge resides a USB Type-A port and a Lightning port (MFi-approved) to charge the battery. This is the big deal here — that’s the very same kind of port that your iPhone has. In other words, as long as you have a cable to charge your iPhone (we’re going to assume you do), you have a cable to recharge your battery, too. Consolidating cables is a big win in our book. This charger also pairs better alongside a phone because it’s lighter than the Anker 13000 and sports more of a rectangular shape, so it fits a bit more snug in the hand.

The Boost Power Pocket 5K has more than enough juice to fully charge an iPhone 11. It also took a little more than 45 minutes to charge an iPhone 11 to 50%, which is faster than the Belkin Pocket Power 5K by six minutes. The capacity of the BOOST Power Pocket 5K is advertised as 5,000mAh and, during our testing, we measured about 3,415mAh. That’s nearly 70% of the advertised value, making it one of the top three batteries we tested in terms of living up to its promise (the average was about 61%).

All in all, the Belkin Boost Charge Power Pocket 5K is a terrific personal charger for your iPhone. With both MFi certification and cable consolidation thanks to the Lightning port, it should really stand out to iPhone users. And at $39.99, it’ll become your iPhone’s best friend.

We ran each and every portable charger through a series of tests. We charged each battery to full, ran it dry juicing up one or several devices, calculated its capacity and compared charging speeds. At the same time, we took a look at properties like weight, size, build quality and visual design. Whether it was a chunky battery that could charge all our tech, or a slim, sleek battery with enough to fill an iPhone, we put these things through the ringer.

Read on to see the breakdowns of all our testing categories.

Battery Life

Battery Size: We noted how many milliamp Hours (mAh) each battery promised. Meets Estimation: This is where we measured how much each battery could actually provide in mAhs. To do so, we charged a variety of devices with each battery, recording how much battery life (aka what percentage) each device gained. When a device was at about 95%, but the battery was not empty, we immediately swapped it for a different device. Once a battery was empty, we calculated how many mAhs it provided in total across all the devices it charged and then divided the promised total by the recorded value. This allowed us to figure out what percentage of its promised total each battery provided. We used a 0.3M Nomad Universal Cable, plugged into a battery’s USB-A port (fast charging if available), to charge each device. The device pool we chose from for charging was: iPhone 11, iPhone 8, Fire HD 10 tablet, Nintendo Switch and Bose QuietComfort 35 II. Design

Design and materials: We researched what materials each battery was made of, as well as how many color options are available. We also felt out the quality of each battery’s build. Visually, we checked out how each device looked alongside a variety of tech, noting if it appeared too big or small beside it, as well as if you could hold a battery and a phone in the same hand or pocket. The device pool we chose from for this was: iPhone 11, Fire HD 10 tablet and Nintendo Switc

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