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mophie juice pack air

iPhone® 4/4S protective case with built-in rechargeable backup battery (Black)

Item #: 833JPAI4B

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Running around town or running to catch a plane, there's one thing you don't need — an iPhone with a depleted battery. Good luck finding an open outlet to recharge your phone in an airport, store, or city street! Enter the mophie juice pack air. This protective case features a built-in battery with enough power to keep your iPhone 4 or iPHone 4S going for hours after its battery has run out.

Mophie juice pack air iPhone 4 4s

The juice pack air has openings for your iPhone's camera lens and hadphone jack, and pass-through control buttons along the sides.

Almost double your iPhone's battery life

Slip your iPhone onto the juice pack air's 30-pin connector and close the case. It's now connected to a built-in rechargeable battery that can greatly increase your reserve of power — enough for 6 additional hours of talk or Internet use, or up to 36 more hours of audio playback. You can set the juice pack air to keep your iPhone continuously charged, or with a button press recharge your iPhone quickly when you need it.

An all-access case

The juice pack air has a USB charging cable that can connect to a computer or USB-compatible power adapter. And good news — you can sync your iPhone through the air's charging cable. Integrated pass-through buttons let you control volume, mute, and power on/off. An included adapter lets you plug your headphones into your device through the case.

Product Highlights:

  • for iPhone 4 and iPhone 4S only
  • protective case with openings for camera lens and headphone jack
  • pass-through on/off, volume and mute controls
  • LED charge indicator
  • toggle between active charging and standby
  • simultaneously recharges battery and iPhone with USB charging cable (included)
  • 1500mAh built-in rechargeable lithium polymer battery
  • opening for headphone cable
  • 2-1/2"W x 5-1/16"H x 11/16"D
  • weight: 2.5 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee

mophie juice pack air Reviews

Average Customer Review:

3 Reviews

mophie juice pack air

Written by: Anonymous from Visalia, ca on March 2, 2014

Crutchfield Customer Review (What's this?)

I love this. My old one seemed a little bigger than this one. I have dropped already and held up to it!!!

Pros: Almost 100% charge when clicked on

Cons: Sometimes have to take case off for good pics

Works perfectly!

Written by: Anonymous from Laguna Niguel, CA on October 15, 2013

Crutchfield Customer Review (What's this?)

The product is exactly as described. Works flawlessly and looks amazing!


Cons: The case is smooth and not tacky at all.

Love the juice pack air!

Written by: Ken from Virginia on June 23, 2013

Does what it says it will; looks good, and doesn't weigh very much. Great product!



Hands-on research

What's in the box?

Download owner's manual

  • Protective iPhone 4/4S case w/ built-in battery pack
  • 31" USB charging cable (w/ a USB type-A connector on one end and a USB type-B connector on other end)
  • User Manual

Product Research


Mophie Juice Pack Air (for iPhone 4/4S): The Mophie Juice Pack Air combines a protective case and rechargeable battery for your Apple iPhone 4 or 4S. The Juice Pack Air has a built-in rechargeable battery which extends the battery life of your iPhone 4/4S for hours. The Juice Pack Air also provides a comfortable ergonomic design with the complete protection of a hard shell case with protective rubberized backing. With the Juice Pack Air, you'll be able to easily access all of your controls, microphone, speaker, camera, and headphone jack. It also has acoustic sound enhancing speaker ports for a richer, fuller sound quality.

Note: You will need to remove your iPhone 4/4S device from the Mophie Juice Pack Air in order to connect your iPhone 4/4S with an Apple certified product with a 30-pin dock connector. You will also need to remove your iPhone 4/4S from the Juice Pack Air to connect your iPhone 4/4S to a home audio or car stereo component which allows iPhone playback through its USB port.

Extended Battery Life: Since it is designed to almost double the battery life of your iPhone 4/4S, the Mophie Juice Pack Air is the ultimate iPhone 4/4S battery case for travel or business. The Juice Pack Air is great for when your iPhone 4/4S is drained of power or you simply one to extend its battery. When the iPhone 4/4S is connected to the Juice Pack Air, a battery symbol will appear on the screen and you will hear a chirp from the iPhone 4/4S; this indicates that the iPhone 4/4S is charging and/or using the power from the Juice Pack Air rather than from the iPhone 4/4S itself.

  • Talk Time: up to 6 hours on 3G or up to 12 hours on 2G
  • Internet Use: up to 5 hours on 3G or up to 9 hours of WiFi
  • Audio Playback: up to 36 hours
  • Video Playback: up to 9 hours
Note: If your iPhone 4/4S is drained of power, the Juice Pack Air will first charge your iPhone 4/4S. If your iPhone 4/4S is fully charged, the Juice Pack Air will act as your primary battery and no power will be lost from the iPhone internal battery until the Juice Pack Air is depleted

Rechargeable Battery: The Mophie Juice Pack Air features a rechargeable lithium-polymer battery rated at 1800mAh. The Mophie Juic Pack Air battery can easily be recharged by connecting the Juice Pack Air to a power source using the included micro-USB cable. The USB cable can be plugged in to your computer or any "Works with iPhone" wall-plug style power source with USB output. You can either charge the Juice Pack Air with the iPhone 4/4S inserted or charge them separately. The Juice Pack Air comes charged and ready to go, but after the initial use, normal charging will take only 2 to 3 hours for maximum power.

Note: The Juice Pack Air is rechargeable for over 500 full cycles. So, you can charge your juice pack 10% of the way 10x before it counts as a complete cycle. After 500 cycles, its fully charged capacity will be less than 75% of the capacity when it's new.

Standby Mode: The integrated power switch allows you to put the Juice Pack Air in standby mode, so you only use the battery when you need it. In standby mode, the Juice Pack Air still allows charge and sync capabilities through the micro-USB port and still offers the complete protection of a case.

4 LEDs: Four LEDs on the bottom of the smart battery case keep tabs on how much power is left in the Juice Pack Air battery. The LEDs also keep you updated on the Juice Pack Air charging status when it's plugged in. The LEDs located on the back of the device will blink when charging. As the Juice Pack Air becomes more charged, the LEDs will indicate how full it is, but one LED will remain blinking until completely full. To check the battery status of the Juice Pack Air, press the button located on the bottom of the case. When pressed, the LED lights will illuminate for several seconds. Four LEDs means that the Juice Pack Air is fully charged, and one LED means that it is almost empty.

Protection Circuitry: The Mophie Juice Pack Air features built-in short circuit, over-charge, and temperature protection.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Product reviews from the Crutchfield Labs

You want your iPhone to keep going as long as you do, wherever your day takes you. Mophie juice packs give you a protective case and a built-in battery with enough power to keep your iPhone 4 or 4S...

What are the Labs?

Customer Q&A

Looking for more? Check out the next model in this lineup.

Mophie Juice Pack Plus for iPhone

Get even more battery backup

The mophie juice pack plus® offers these features:

2000mAh built-in rechargeable lithium ion battery

adds up to 8 hours of talk, or 44 hours of audio playback

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