The #1 Selling Mobile Battery Case Brand in the U.S.*

$99.95 In stock
Charge Force

juice pack FLEX

Made for iPhone 7
Charge Force

juice pack FLEX

Made for iPhone 7
The juice pack FLEX features mophie Iso-Flex technology to protect your phone against drops, hard falls and all the other accidents that just seem to happen. In addition, the case has enough power to extend your talk time to over 27 hours* and features charge force wireless power to enable effortless charging using virtually any wireless charging technology.

wireless charging case iPhone 7 - back - magnetic battery

Advanced 2,525mAh Battery

Equip yourself with the power your phone needs to keep up with your busy life. The protective juice pack FLEX battery case delivers up to 100% extra battery to extend the life of your iPhone 7 to a total of 27 hours*.

Charge Force Wireless Power

Compatible with Qi and other wireless charging technologies, you can recharge your phone and juice pack case by using virtually any wireless charging pad, including those found at airports, coffee houses, and in many new cars. Never fuss with cables again.

Rugged Iso-Flex Protection

mophie Iso-Flex technology is an advanced polymer material incorporated in the case’s frame to absorb and disperse energy on impact; providing rugged protection against drops, hard falls and all the other accidents that just seem to happen.

wireless charging case iPhone 7 - back

Secure Magnetic Attachment

Use the juice pack FLEX case with any mophie charge force wireless accessory and enjoy effortless wireless charging at home, the office, in the car, and on-the-go. The magnetic mounts hold your case and phone in place and charging begins on contact.

Priority+ Charge & Sync

Use the included micro USB cable to enable Priority+ pass-through charge & sync when connected to a computer. The phone always charges first, followed by the juice pack battery, whether you’re charging wirelessly or with the included micro USB cable.

LED Power Indicator

Take on your day with confidence knowing you can start charging your phone anywhere with the push of a button. Press to turn the juice pack battery on/off or to display battery levels and charge status. Know before you go.

WARNING: Cancer and Reproductive Harm -

Tech specs

  • Battery Capacity


  • Compatibility

    iPhone 7

  • Dimensions

    6.07 x 2.87 x 0.68in (154.06 x 73.01 x 17.34mm)

  • Weight

    3.81 oz (108g)

  • Product Skus


  • Warranty

    2 Year Warranty

  • In the Box

    juice pack flex battery case, quick start guide, USB A to USB micro B cable

  • Manual

    Download here

  • Legal

    View here

Frequent Questions

  • What is mophie “Iso-Flex” technology?
    The mophie juice pack FLEX battery case features an Iso-Flex frame. Iso-Flex is an advanced polymer material designed to provide superior protection against drops and hard falls by absorbing and dispersing energy on impact rather than compressing and rebounding like a typical elastic or rubber material. The Iso-Flex frame also features raised corners that offer additional protection against scratched and cracked screens.
    What does “MIL-STD-810” mean?
    The juice pack FLEX case has been designed and built to comply with U.S. military standards for resistance to drops and hard falls.
    How do I wirelessly charge my juice pack FLEX case?
    Simply place the juice pack case on the mophie wireless charging base or any Qi-compatible charger. (mophie charge force products will automatically align the juice pack case for a proper charge.) Wireless charging will automatically begin when the case is aligned on the charger. If your phone is inside of the case it has priority and will charge first, then the juice pack case will charge.
    What wireless chargers will my juice pack FLEX case work with?
    The mophie juice pack case is compatible with all mophie charge force products. It will also wirelessly charge from any Qi-compatible wireless charger, and is compatible with other wireless charging technologies, such as those used at coffee houses, restaurants, in furniture with wireless charging, and in consumer vehicles that support wireless charging.
    How does the extra battery work?
    When you slide your phone into the juice pack case, a connector at the base of the case plugs into the port at the bottom of the phone. Press the status button on the back of the case for 3 seconds to start charging your phone. After using up all the power in the juice pack case, just recharge it for more on-the-go power. If you want to stop charging the phone, press the status button again for 3 seconds.
    What is the best method for charging my phone using the juice pack case?
    Assuming that your phone and juice pack case are both fully charged, we recommend waiting until your phone has 20% battery left. When the phone’s in the red, press the juice pack case’s status button for 3 seconds and let the case to do the heavy lifting. The phone requires more power to charge past 80%, so if you want to get the greatest battery boost from the juice pack case, we suggest putting it back into standby mode until your phone battery is low again. This isn’t the end-all-be-all, but we like it.
  • How do I charge my juice pack case when I’m on the go?
    After using up all the power in the juice pack case, connect it to a power source using the included micro USB cable. You can plug the cable into your computer or any power source with a USB out, like the USB wall adapter included with your phone. You do not need to remove your phone from the juice pack case to charge. In fact, leaving your phone in the juice pack case while charging will charge both your phone and the case together.
    Why aren’t the LEDs blinking while my juice pack case is charging?
    After you begin charging the juice pack case, the LED status indicators will start blinking to indicate charging. The lights will turn off after 30 seconds allowing for a good night’s rest. Remember to press the status button to check the battery’s charge status before you take your juice pack case. When all four LEDs are lit, your juice pack case is fully charged.
    How many charge cycles can I get out of my juice pack case? Or, in other words, how long will the juice pack case last?
    You can recharge your juice pack case for over 500 full cycles. A full cycle is when you recharge the case from 0% to 100%. Partial cycles, like charging from 25% to 100%, will not count as a full cycle until all of the partials equal 100%.

    After 500 full cycles, the battery in the juice pack case may provide less than 75% of its original capacity. This is normal for any product with a lithium polymer battery.
    Does the juice pack FLEX case block the speaker, microphone, camera, or any other ports?
    Of course not. In fact, the juice pack case is designed to act as a virtual speaker box! Sound is redirected from the bottom of the phone to the front, resulting in a richer, fuller sound quality.
    Does the juice pack case interfere with my phone’s antenna reception?
    Not a chance.


When will the Juice Pack Flex be available in the UK?

Asked by: BoxBender
We don't have word yet on availability in your region. Keep checking back for updates!
Answered by: Victoria O
Date published: 2018-02-22

Will the Apple aux cord still work through the charging port with the case on?

Asked by: Jake214
No, as pass-through Lightning technology is proprietary to Apple Inc.
Answered by: Anne T
Date published: 2018-03-04

Is this a Nicad or Lithium battery

Asked by: JG12
The juice pack FLEX is made of a lithium-polymer battery.
Answered by: Anne T
Date published: 2017-11-16

How can I get a juice pack flex for the iPhone 7?

Asked by: ryanryan13
We suggest signing up for our newsletter at to receive the latest updates on product availability. Thank you for your interest in mophie.
Answered by: Anne T
Date published: 2018-02-05

Please give us a clear answer about whether JuicePackFlex for iPhone 7 will be available.   I assume there was a problem with the version that came out a couple of months ago, and that you are working on it, but please tell us if it will be produced again

Asked by: Berniesand
Thanks for reaching out, Bernie. We cannot give a definite answer, as we do not have that information available. There have been no known issues for the juice pack FLEX that we are aware of. If you would like updates on when the product comes back in stock, head to to sign up.
Answered by: Anne T
Date published: 2018-02-05

When will you have in stock for IPhone 8 Plus???

Asked by: Gizelle
No plans on that at this time. Be sure to sign up for notifications for products compatible with the iPhone 8 Plus.
Answered by: Anne T
Date published: 2018-02-09

ETA for IPhone 7 Plus? Thanks.

Asked by: cmcronen
No word on that yet. Be sure to sign up for notifications for product launches at
Answered by: Anne T
Date published: 2017-11-18

So if there is no pass through lightning port, can we not access or music without taking the case off?

Asked by: Jake214
Since pass-through Lightning is proprietary to Apple Inc, we suggest trying out wireless headphones. Otherwise, you will need to remove the case.
Answered by: Anne T
Date published: 2018-12-29
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juice pack FLEX is rated 3.5 out of 5 by 15.
Rated 5 out of 5 by from An excellent product Really efficient as explain online. I really recommend.
Date published: 2018-12-24
Rated 5 out of 5 by from Works great This is the 2nd Mophie product It greatly lengthens my I phone 7s battery power *This is almost a must purchase for me since Apple evidently forces you to update to their newest software ( which causes the battery to run down quickly). At least this is what I experienced right after doing an "Update" that it kept bugging and bugging me to do :( Evidently this helps them sell new phones every couple of years because those that are affected by this so called "update" end up with terrible battery life.. There should be a class action suit against Apple for these tactics... Apple takes advantage of people in my opinion due to these tactics.
Date published: 2018-12-20
Rated 5 out of 5 by from Great product I bought this for my husband and he is very happy with it.
Date published: 2018-12-18
Rated 5 out of 5 by from Love everything about it. Don’t worry about the slight weight difference from the average otter box weight. You won’t even notice the t after a day or so. I would go isoflex right off the hop , if it’s your first one.
Date published: 2018-12-15
Rated 5 out of 5 by from Excellent Product I bought my juice pack about two weeks ago and it is great! It has a hard rubberized case, it has a rather slim design, and it charges wirelessly. I move around quite a bit with my job, so I’m not always able to charge my phone to meet my daily needs. Because of this device, I’m able to charge my phone to 100%. This is my second mophie flex, I have used these devices for the past couple years. It’s worth the money!!!
Date published: 2018-11-18
Rated 5 out of 5 by from Great product! The mophie holds its battery life extremely well and puts less worry on you as you use it.
Date published: 2018-10-08
Rated 5 out of 5 by from Serious protection As a mom of toddlers, my phone gets dropped (at times, chucked) regularly. My husband uses a mophie battery case, but I was always nervous to give-up my protection for additional power. This case is literally the best of both worlds! In the short time I've had my FLEX case, it's protected my phone (and screen) from multiple drops, and provides a consistent charge. And, it charges wirelessly! Very pleased with this product.
Date published: 2017-10-25
Date published: 2018-12-25
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