Just in Case

Best Battery Cases for iPhone 8 and 8 Plus


January 5, 2018 Buying Guides By Photo by Mophie

Last Updated January, 2018: We’ve added additional picks and insights. Prices and links have also been updated.

Editor’s Pick: Mophie Juice Pack Air

The Juice Pack Air is a solid charging case that’ll add an extra to 2,525mAh to your iPhone. It has a minimalistic design and works with Mophie’s other Charge Force accessories. It’s also compatible with other Qi wireless charging stations, so you don’t have to take the battery off your iPhone to charge. In addition to being more rugged than the other cases, this case allows you to charge the iPhone when you want. So even if your case is fully charged, and your phone is dead, the case won’t automatically charge your phone until you press a button on the back.

Upshot: It’s compatible with Qi wireless chargers and won’t charge your iPhone when you don’t want it to.
Features: drop-resistant, front-facing speaker ports, LED indicator lights
Materials: silicone
Number of Color Options: 5

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Introduction

With our ever-growing dependence on smartphones, few things are more debilitating it dying with no wall outlet or charger nearby. But now the trouble might well go beyond the missed phone call or reduced Netflix time if you’re flying: the TSA is banning powerless devices on international flights coming into the United States. Considering that you could be forced to abandon your phone, or even be detained for questioning, an iPhone battery case is a wiser investment than ever — Android users check back soon. Though we’ve brought you five great cases before, newcomers are popping up all the time from manufactures both widely established and up and coming.

The Picks

Best Budget: Anker PowerCore Case 2200mAh

If you own an iPhone 7 or 8, Anker’s PowerCore case packs enough juice to almost double your phone’s battery life. Unfortunately, there’s no model for the 7 Plus or 8 Plus (yet). It has a slim design compared to other battery cases, and only adds an extra 0.23-inches to the phone. On the downside, because the case has a built-in Lightning dongle, but charges via its micro-USB port, in order to charge the case and the iPhone at the same time, the Lightning dongle has to be plugged into the iPhone while the micro-USB is charging the case — basically it’s more complicated than the normal process of charging your iPhone. Also, the case doesn’t support wireless charging.

Upshot: Ultra slim design, very affordable
Features: 2200mAh extra power, 18-month warranty
Materials: silicone
Number of Color Options: 1

Best for Apple Loyalists: Apple Smart Battery Case

Apple’s case has a battery size of 2365mAh, slightly more than the above Anker PowerCore Case. The case charges via the Lightning port, which is convenient for pass-through charging. It also lets you use Lightning accessories, like Lightning headphones, while the case is on the iPhone.

Upshot: reliable and won’t require any extra cords to charge
Features: soft microfiber lining, pass-through charging and accessories
Materials: silicone
Number of Color Options: 3

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Editor’s Pick: Mophie Juice Pack Air

The Juice Pack Air is a solid charging case that’ll add an extra to 2,525mAh to your iPhone. It has a minimalistic design and works with Mophie’s other Charge Force accessories. It’s also compatible with other Qi wireless charging stations, so you don’t have to take the battery off your iPhone to charge. In addition to being more rugged than the other cases, this case allows you to charge the iPhone when you want. So even if your case is fully charged, and your phone is dead, the case won’t automatically charge your phone until you press a button on the back.

Upshot: It’s compatible with Qi wireless chargers and won’t charge your iPhone when you don’t want it to.
Features: drop-resistant, front-facing speaker ports, LED indicator lights
Materials: silicone
Number of Color Options: 5

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Best Rugged: Mophie Juice Pack Flex

The Juice Pack Flex is very similar to the above Air. It costs the same. It has the 2,525mAh extra battery. It supports Qi wireless chargers. And you can control when the case actually charges your iPhone. The main difference is that the Flex is a more rugged case. It’s built with Mophie’s Iso-Flex technology, which better absorbs and disperses the impact of a fall. It adds a little extra bulk, but this is the case you want if you tend to drop your iPhone a lot.

Upshot: It’s compatible with Qi wireless chargers and won’t charge your iPhone when you don’t want it to. It’s also the most rugged option.
Features: drop-resistant, front-facing speaker ports, LED indicator lights
Materials: silicone
Number of Color Options: 1

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Best Modular System: Otterbox Universe Case and PolarPro PowerPack

Otterbox is well known for its rugged cases and while the Universe Case is no different, offering a level of drop protection, it’s much slimmer than your normal Otterbox case. On the flip side, the case is compatible with Otterbox’s modular charging system PolarPro. When you buy a separate PolarPro battery pack (2100 mAh), it’ll magnetically attach to the Universe Case and charge your phone. This keeps the design of the case minimalistic and slim, while giving you the option to charge your iPhone whenever. The issue is you’ll have to remember to charge the PolarPro PowerPack beforehand and you’ll also have to remember to bring it with you.

Upshot: The case is slimmer than most and, together with the battery pack, both cost the same as most other cases.
Features: LED indicator lights, modular charging system
Materials: glass-filled polymer
Number of Color Options: 4 (case), 1 (battery pack)

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