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The best iPhone X battery cases for 2021

The iPhone X kickstarted a major redesign of Apple’s iPhone range, and that design is still broadly kicking about in the iPhone 12 — even if Apple has made some changes to the formula. But just because it still looks good, doesn’t mean the 2017 hardware isn’t starting to creak a little. While the high-end processor is still probably doing fine, it’s likely your battery is starting to give.

If that’s the case for you, and your battery is really struggling to make ends meet, you could replace your battery. Or, if you’d rather not have someone open your beloved phone, maybe invest in a battery case. These power-full cases do add some thickness to your sleek device, but they’re an excellent way to provide extra juice on the go. Here are some of the best iPhone X battery cases still available today.

Mophie Juice Pack Access Battery Case — 2,000mAh

Mophie’s Juice Pack cases are the gold standard where battery cases are concerned, so we’re delighted it’s still offering the Juice Pack Access for the iPhone X. It doesn’t come with the largest capacity around and offers just 2,000mAh — about a third of some of the largest battery cases. But that’s still enough to boost your battery life significantly, and what you lose in extra battery power, you gain in a slimmer profile and an extremely high-quality build. A series of LED lights on the back shows how much battery you have left, and you can click the power button to turn on charging. It’s made from tough polycarbonate, which means it’s also pretty protective. However, it’s certainly not cheap.

Casely Geo Rose Gold Marble Power Case — 4,100mAh

Cases can be used to add a new style to your phone’s design, and that’s true where Casely’s Power 2.0 battery cases are concerned. This case has Casely’s mind-bending Geo design, in rose gold with a marble effect, and it’s just absolutely stunning. It’s fully headphone jack compatible (so you can plug your Lightning headphones in through the case), and it charges on your Lightning cable and supports wireless charging. It’s solid and protective, and while it’s quite expensive, the 4,100mAh battery is pretty huge, and the style speaks for itself. Not a fan of the design we’ve picked? Check out Casely’s full collection and choose one more to your style.

Punkjuice Waterproof Battery Case — 3,600mAh

Waterproof cases are still relatively uncommon, but waterproof battery cases are almost non-existent. Our team was surprised to find this waterproof battery case from Punkjuice. According to the company, it’s your ultimate battery protector; it’s reportedly waterproof, dirt-proof, drop-proof, and snow-proof. It may not be the most fashionable looking case— it adds a bit of a chin around the bottom of your phone and increases bezel around the edge. However, it will add a significant amount of protection and 3,600mAh of additional battery. The four LEDs on the back of the pack indicate how much battery usage is available. This case may be more of an investment for users due to its higher cost. 

$90 from Punkjuice

Feob Battery Case — 6,500mAh

Maximize your battery case for the most valuable price. Consider the Feob battery case for its low cost and enormous battery capacity of 6,500mAh. We expect that will be enough of a charge to keep you going on a long ride or a trip outdoors until you’re able to charge up again. A battery with this capacity does create a bulky look for your device. However, Feob does note that this case won’t add the large chin you’ll find with other battery cases. LEDs indicate your battery levels, and you won’t ever have to take off the case to connect your iPhone to your computer.

$24 from Amazon; $41 from Walmart

Alpatronix BXX Qi-Enabled Battery Case — 4,200mAh

This is an excellent choice for a utilitarian battery case. The wireless charging-enabled Alpatronix case has a subtle exterior but packs a massive battery capacity punch. This device is programmed to charge your phone first and battery pack second, so you can still use your wireless charger reliably. The 4,200mAh-rated battery is expected to support about 12 hours of talk time, and the design protects your phone against drops. There are a few downsides to keep in mind: the case charges by Micro USB connection, and while you can still connect to your PC with that, that means no Lightning cable headphones. While the company says the design is subtle, it still features a bulky chin at the bottom of the device. That said, this device is reliable and will keep your smartphone protected. And the icing on the cake is that it comes with a free iPhone X tempered glass screen protector too.

$38 from Amazon; $45 from Walmart

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