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

£89.95 In stock
Charge Force

juice pack

Made for Galaxy S8
Charge Force

juice pack

Made for Galaxy S8
Enjoy extra battery life for the Samsung Galaxy S8. The juice pack battery case extends your talk time to over 33 total hours* and maintains the ability to recharge your phone and battery case anywhere wireless charging systems are available.
What is charge force?

Add Accessories Save when bundled with this product

  • PRO cable | USB-A to USB-C - 1m
    Add PRO cable | USB-A to USB-C - 1m £19.95+£15.95
    High-performance, heavy-duty PRO cable with a USB-C connector to charge and sync your smartphone or other USB-C devices.
  • PRO cable | USB-C to USB-C - 1m
    Add PRO cable | USB-C to USB-C - 1m £19.95+£15.95
    High-performance, heavy-duty PRO cable with a USB-C connector to charge your laptop, smartphone, or other devices with a USB-C port.
wireless charging battery case Samsung Galaxy S8

2,950mAh built-in battery

The rechargeable battery case provides more than 33 total hours of battery with the push of a button, while Charge Vault technology enables our industry-leading, juice pack batteries to hold their charge for an extended period of time so they are always ready right when you need it.

Universal wireless charging

Compatible with Qi and other wireless systems, this juice pack battery case works with virtually any wireless charging pad, including those found at airports, cafes, cars, or anywhere else that has wireless charging available. Never fuss with cables again.

Secure magnetic positioning

This juice pack case includes Charge Force technology with built-in magnets to enhance your wireless charging experience at home, the office, in the car, and on-the-go. The case magnetically aligns with mophie charge force mounts to hold your phone in place as charging begins on contact.

wireless charging battery case Samsung Galaxy S8

Reliable high-density battery

mophie products are built to last. Our batteries contain first-class lithium-ion polymer cells that are examined and tested to deliver the most efficient charge, while integrated, fail-safe circuitry prevents over-charging and controls temperature to prevent overheating.

Priority+ fast charging

Connect the phone’s charger and USB-C cable to the juice pack case to charge your Samsung smartphone at the fastest speeds possible. mophie Priority+ charging allows pass-through charge & sync while connected to a computer. Your Galaxy S8 recharges first, and then the juice pack battery recharges itself.

Low-profile design

High-impact protection built into the case’s design includes raised corners that provide edge-to-edge screen protection and internal bumpers that add extra cushion to the edges and corners of the hard shell for unrivaled protection against drops and hard falls.

Tech specs

  • Battery Capacity


  • Compatibility

    Galaxy S8

  • Dimensions

    2.89 x 6.3 x 0.69 in (73.34 x 160 x 17.57 mm)

  • Weight

    3.7oz (104.9g)

  • Product Skus


  • Warranty

    2 Year Warranty

  • In the Box

    juice pack case, Quick-start guide

  • Manual

    Download here

  • Legal

    View here

Frequent Questions

  • How do I wirelessly charge my juice pack case?
    Simply place the juice pack case on 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, the juice pack case and phone will charge together.
    What wireless chargers will my juice pack 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, on airline flights, in furniture products with wireless charging, and in consumer vehicles that support wireless charging.
    Is the juice pack case’s wireless charging compatible with Samsung’s Fast Charge Wireless Charging Pad?
    Although the juice pack case will wirelessly charge from a Samsung Fast Charge Wireless Charging Pad, it will charge at standard wireless charging speeds, not at 1.4x Fast Charging speeds.
    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?
    If 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 cable included with your phone. You can plug the cable into the wall adapter included with your phone or any power source with a USB out. 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.
  • Will Samsung Adaptive Fast Charging work on my phone when I’m charging the phone and juice pack case together from the Samsung Adaptive Fast Charging wall charger?
    Yep. Your phone will Fast Charge from the Samsung Adaptive Fast Charging wall charger while it’s inside the juice pack case.
    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 check the status indicator 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 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 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?
    All Wi-Fi and LTE functions on the Galaxy S8 and Galaxy S8 Plus are unaffected by the juice pack case. However, the juice pack case may interfere with NFC performance.


What percentage of battery life is added when the juice pack is used? For example, my old juice pack for my S4 added about 70% battery life.

Asked by: scthawki
The juice pack for the Galaxy S8 offer up to 80% extra battery.
Answered by: Victoria O
Date published: 2017-07-31

Is this waterproof same as s8 phone?

Asked by: Jean1220
No, the juice pack for the Galaxy S8 is not waterproof.
Answered by: Victoria O
Date published: 2017-07-26

It says coming soon and still not available in the UK. When do we expect the release

Asked by: Hamza
We are hard at work! Explore the stages and sign-up to get notified as we create our next generation products for the Galaxy S8 and S8+ by visiting
Answered by: Victoria O
Date published: 2017-05-30

I understand that the Mophie case is not itself waterproof. But, does having it attached to my phone impact the IP rating of the phone? In other words, does the Mophie case cause the Galaxy S8 to lose it IP rating or waterproof feature?

Asked by: d0truji
Results may vary.
Answered by: Anne T
Date published: 2018-08-20

Will the magnet deactivate my credit cards?

Asked by: Steph1173
No, it should not deactivate your credit cards.
Answered by: Anne T
Date published: 2018-04-15

Is there a replacement for the top portion of this device.

Asked by: MR MARIO
We'd be happy to get you a replacement. Please contact Customer Support at 888-866-7443 as they can assist you with a replacement under warranty.
Answered by: Anne T
Date published: 2018-04-15

When will more colors come out?

Asked by: Veronica
We currently do not have any information available on future color options for the Galaxy S8 juice pack. Keep checking our site and sign up for our newsletter at for new and exciting, soon to be released products.
Answered by: Victoria O
Date published: 2017-05-30

I bought an s8 and am interested in a charging case that has a wallet feature. Is this a thing where can I get one.

Asked by: Nikie
We currently do not offer a wallet feature for the juice pack at this time.
Answered by: Anne T
Date published: 2018-10-15
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juice pack is rated 4.3 out of 5 by 57.
Rated 5 out of 5 by from Great product! Bought this before my disneyland trip and it was perfect. I didn't have to keep going to the hotel top charge my phone I simply charged the case over night and it lasted all day
Date published: 2018-11-06
Rated 5 out of 5 by from I had it for about a week and holding some tools v I had for about 10 days and it is working Great for my personal use
Date published: 2018-11-05
Rated 5 out of 5 by from Great product Very helpful!!! A lot of people ask me about it. That why this is my 2nd one.
Date published: 2018-10-30
Rated 5 out of 5 by from Amazing!!! By far the Best phone case I've ever bought. Just love it.
Date published: 2018-10-23
Rated 5 out of 5 by from Amazing I love the cover it helps a lot when I watch the NFL games and it been a long day the battery starts to died you just click it on and you are good to go
Date published: 2018-10-13
Rated 5 out of 5 by from works great I recieved my s8 mophie under warranty, as my last one was defective after 2 months. i have had this mophie for a couple weeks so far and it works great!! it even charges better than the last one and arrived to me a day earlier than expected.
Date published: 2018-09-24
Rated 5 out of 5 by from Excellent quality great customer service &warranty I am on my third new phone in as many years and this is my third mophie - I can't get a new phone without this product - I run so many apps that the phone battery gets sucked down quickly but all I need to do is press the button and I get another few hours. The build quality is great and I know first hand that this company stand behind their product - I dropped my phone and broke my first mophie - they replaced it within days! And then my second juice pack stopped charging (after 2 years) and they replaced that one... Love this company - and especially like that the magnetized the case so I can use qi charging - this is the perfect device!!
Date published: 2018-09-14
Rated 5 out of 5 by from Great back up battery I cannot keep a battery charged on my phone, this, saves the day. 2nd Mophie, loved the 1st as well.
Date published: 2018-09-04
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