Review: MaxBoost Atomic S iPhone 5/5s Battery Case

MaxBoost Atomic S iPhone 5/5s Battery Case









  • Provides one full charge to a iPhone 5/5s
  • Easy to use and provides syncing with the Battery Case on.
  • Protection from the back of the phone.


  • No protectiom from the front of the iPhone 5
  • Add a little noticeable thickness.
(Last Updated On: December 13, 2020)

Small capacity smartphones are the best smartphones to use battery cases.

Since those kinds of smartphones use their power capacities up to the fastest and so it’s vital to have a power source ready to recharge them as fast as possible. Power banks can also be useful but even the most portable of power banks means having to hold onto a secondary power source and most people still don’t like that.

This is the MaxBoost Atomic S iPhone 5/5s battery case and it’s one of the best battery cases to charge your iPhone 5 while you’re on-the-go.

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Power Capacity:

Like most battery cases, the power capacity isn’t going to be what you’re going to receive.

This is mostly for 2 reasons. The battery case uses Lithium Polymer batteries and battery cases simply don’t have the same tech to convert power very well. As a result, the real power capacity that your iPhone 5 will be able to receive is about 1,500mAh.

That’s a pretty good power capacity and for the most part, the companies that do make battery cases always have to make sure the initial power capacity of their battery cases must be higher than the smartphone that they need to charge. That’s because that way there’s enough power to be used.

The power capacity of an iPhone 5 is 1440mAh and a power capacity of an iPhone 5s is 1560mAh. As a result, you’ll get 1 full charge for either of those smartphones that you use and that’s mostly what battery cases are useful for.

MaxBoost Atomic S iPhone 5/5s Battery Case 2,400mAh (Output Power Capacity = 1,500mAh)Phone CapacityMaxBoost Atomic S iPhone 5/5s Battery Case Left Over Capacity after One Charge

# of Full Charges for the Device
iPhone 51,500mAh1440mAh 60mAh Left Over

1 Full Charge
iPhone 5S1,500mAh1560mAh-60mAh

Need 60mAh More to Charge to full power

Output Charging:

There’s not much speed when it comes to recharging an iPhone 5 in general because the max charging speed for the iPhone 5 and 5s is 1 Amp and the charging Output that this battery case can output is 5V/1.0A. As a result, you’re going to be able to charge your iPhone 5 at its max charging speed.

Input Charging:

Recharging is done through a Micro-USB input port at the bottom of the battery case and it’s recharged at 5V/1.0A. The battery case itself will recharge to full power in about 2-3 hours since you’re filling up the entirety of 2,400mAh and not just the Output power capacity.

Even though the battery case is capable of charging and recharging itself (PassThough Charging) we don’t recommend doing that too often because it can very well cause damage to the battery case by heating it and that can lead to damaging your iPhone 5 as well.

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Size and Weight:

It’s about the same size as the iPhone 5 but of course, it’s larger since it’s a battery case.

It has a length of 5.5 inches, a width of 2.6 inches, and the most important aspect is the thickness of the battery case with it being 0.7 inches. Yes, it is quite thick, and putting the battery case on your iPhone is going to make a difference when you place your iPhone 5 into your pocket.

With that said, not much else changes with its design because the battery case just weighs 3 ounces.

Functional Components:

The battery case itself is separated into 2 different pieces. The battery case part where the battery actually is and where you place your iPhone and then there’s the bumper that goes over your iPhone 5 once you have it on the battery case

The Lightning charging head will always be in your iPhone 5 ready to charge it and all that you need to do is just press the power button on the back of the battery case.

There are 4 Blue LED power capacity indicators as well. Also on the back of the battery is a kicked stand that you can take out and your iPhone 5 will be able to stand horizontally.

On the front is where there’s a sound chamber opening, and at the bottom is where there’s the headphone jack that should be used with the Headphone Jack Extender. Also at the bottom is the Micro-USB Input port that is used to recharge the battery case and you can also use it for file sharing with devices like your computer.

Overall, you can use your iPhone 5 the same way you would with a normal case or without a case.


Structure and Material:

The battery case is made of plastic and provides most of its protection on the back because that’s where the screen isn’t’ showing. However, the front of the battery is where your iPhone is most at risk because the battery case doesn’t have a bezel to protect your screen from falls.


On the tech side, there’s nothing extraordinary but charging can stop once your phone has reached its full power.


If you’ve got an iPhone 5/5s and want more power throughout your day without sacrificing its portability too much then this battery case is perfect.

It won’t be able to charge past a single charge, even though Maxboost claims that’s what the battery case can do. Even so, just a single full charge is enough to take your phone through the entire day.

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You’ll be able to charge your iPhone 5 to its full power, charging speeds are good for the iPhone 5 with an output of 5V/1.0A.


It’s going to make your iPhone 5 thicker and it is going to feel a lot different in the pocket of your jeans but it tries its best to keep itself slim. You can even share files while you have the battery case on but you need a Micro-USB Cable.


Not the strongest of builds for a battery case and it provides most of its protection from the back and not the front.


It’s very reliable on all of its parts but just know that you’re sacrificing the portability of your iPhone 5 by just a little bit.

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Specs of the MaxBoost Atomic S iPhone 5/5s Battery Case:

  • Power Capacity: 2,400mAh
  • Output: 5V/1.0A
  • Input: 5V/1.0A Via Micro-USB Input Port
  • LED Power Indicators: 4-LED Dotted Power Capacity Indicators
  • Size: 5.5 x 2.6 x 0.7 inches
  • Weight: 3 Ounces


Battery cases are a perfect solution for charging smartphones because they’re cases and they provide power.

If you need charging with your phone at 5%, no wall charger in sight, and no power bank on you, then what better way to have power than literally right in the palm of hands.

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