The #1 Selling Mobile Battery Case Brand in the U.S.*
Tech specs
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Battery Capacity
3,300mAh
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Compatibility
Galaxy S8+
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Dimensions
3.11 x 6.72 x 0.74 in (79.07 x 170.73 x 18.8 mm)
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Weight
4.1oz (116.2g)
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Product Skus
3994
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Warranty
2 Year Warranty
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In the Box
juice pack case, Quick-start guide
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Manual
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Legal
*Hours of battery are estimated by adding the mAh capacity of the juice pack battery to that of the Samsung Galaxy S8+ internal battery.
Frequent Questions
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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.
Answers
Why is the juice pack so slick? It will definitely fall out of anyone's hand. Why didn't you add ANY grip to the juice pack? Where is an app to monitor the juice pack FROM the S8+ while it is running?
Thanks for reaching out! The juice pack for the Galaxy S8+ is made with our standard black matte material. There is no app to monitor the amount of charge on your juice pack. To check the status of your juice pack simply push the status button located on the back of your juice pack. The status LEDs will indicate its charge level. Four LEDs means that the juice pack is fully charged, while one LED means the juice pack is almost dead. If you would like a visual of what is being described please visit http://www.mophie.com/shop/galaxy-s8/juice-pack-galaxy-s8-plus?a92=12 and download our user manual located under Tech specs.
Date published: 2017-06-13
How much drop protection does this provide when I'm switching to this from the Otterbox Defender that's on it now?
The juice pack for the Galaxy S8 Plus has high-impact protection built into the case’s design that includes raised corners to 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.
Date published: 2017-06-14
Is there going to be a case released for the Galaxy Note 8? I know a lot of people that are holding off on other cases to get one
We're already hard at work! Sign up to get notified about the Galaxy Note8 at: www.mophie.com/innovation.
Date published: 2017-11-02
Can I use Android Pay/Samsung Pay using while this case is in use?
All Wi-Fi and LTE functions on the Galaxy S8 Plus are unaffected by the juice pack case. However, the juice pack case may interfere with NFC performance.
Date published: 2017-08-09
Top part has cracked how to get a replacement bottom battery part is fine
Oh no! We're sorry to hear that! We'd be happy to assist you with a replacement under warranty. Please give us a call at 888-866-7443.
Date published: 2018-02-23
What would happen if I plug my Samsung charger cable thru the case charging port and I put my phone on the Mophie charging pad will it charge the devices faster?
No it, will not charge the phone any faster. It will only pull power from one source at a time.
Date published: 2017-09-11
I just got this case and am having trouble charging it wirelessly. I'm using a Samsung Qi wireless Fast Charger and the phone charges, but not the case. Do I have to charge the case with a USB cable or should wireless be working?
The juice pack is compatible with most Qi wireless chargers. Please reach out to our Technical Support team at 888-866-7443, as they can best advise on what the issue may be.
Date published: 2018-07-16
My case recently stopped working, it will charge the CASE first which is already wrong, then it won't even charge my phone afterwords. Is there a way to reset it. Help!
Oh no! We're sorry to hear that Jake. Please contact our Technical Support team at 888-866-7443 as they can best advise on what this issue may be.
Date published: 2017-11-09
When charging the phone with the case will the phone quick charge? This is not when connected to the wall, this is just the case charging the phone.
No, the juice pack does not support quick charge.
Date published: 2017-08-14
Can you take on an airplane
You sure can!
Date published: 2018-05-21
Can you apply and use a magnetic vent clip or dash clip with the mophie case without ruining it?
We do not recommend using the juice pack for the Galaxy S8+ with 3rd-party magnetic mounting systems. The magnets in the case will firmly attach it to mophie charge force mounts, but we cannot guarantee that they will adequately hold when used with a 3rd-party magnetic system. Check out our charge force mounts here, http://www.mophie.com/shop/docks
Date published: 2017-06-19
Do you send to mexico?
Thanks for reaching out! Here is a list of all of our retailers: http://www.mophie.com/retail-partners
You can also search by region down at the bottom of the page. We hope that helps, and thanks for your interest in mophie.
Date published: 2017-09-19
no matter what charge cord or charger I use even wireless doesn't work with this case all it says is weak charge detected or it starts charging then stop repeating the process over and over and never charges
We're sorry to hear that, Scott. Please give us a call at 888-866-7443 so that we can discuss a solution with you.
Date published: 2018-01-15
How long does the case take to charge (s8+ case)
The juice pack itself will take 3-4 hours to fully charge.
Date published: 2017-09-16
People in here are saying that they bought the case, but why does it show to me "product coming soon" ?
The juice pack for the Galaxy S8+ is currently unavailable on our EU site. Keep checking back with us for updates!
Date published: 2017-08-02
When will this be available?
No news yet! Keep checking back with us and sign up for our newsletter to stay up to date on new products and releases, www.mophie.com/newsletter
Date published: 2017-06-15
When you guys are going to have the Note 8 case available for purchase?...thank you!
We haven't announced anything for the Note 8 just yet, but stay tuned and join www.mophie.com/innovation.
Date published: 2017-11-02
Who has tried using Samsung pay with thier Mophie case? I bought a batterie case on Amazon that is about the same thickness as the mophie and it did work both places i used the NFC Scanning. I want a Mophie for the wireless charging and 2 year warranty
The juice pack will not impede LTE or WiFi signals, but due to the need for NFC to be used in very close proximity, your ability to use NFC will vary on the application it is used for, and the strength of both the signal from your phone, and the signal from the other device. As we do not test the case for functionality with NFC, we cannot guarantee that this will work in all instances.
Date published: 2017-07-24
What is the thickness of the mope with the device inside?
The juice pack for the Galaxy S8 plus is 3.11 x 6.72 x 0.74 in (79.07 x 170.73 x 18.8 mm).
Date published: 2017-05-31
Have you considered putting some intelligence in the case and an app to manage the charging state? After buying an iPhone and Apple battery case for my wife where you manage the power source from the phone, managing the charging manually seems antiquated.
Thanks for the suggestion. We'll be sure to pass this along to our team!
Date published: 2017-10-23
I have the juice pack case for my s8+, I have had it since September of 2017 and now it wont hold a charge or charge fully, how can I get a warranty replacement?
Hey Nate! We're sorry to hear that. We'd be happy to assist you. Please contact our Customer Support team at 888-866-7443 to see if your device is eligible for a replacement under warranty.
Date published: 2018-03-20
Can the case charge the phone wirelessly? My phone's USBC connection no longer works so it can only charge wirelessly.
It sure can!
Date published: 2018-01-06
I've read several reviews that state that the Juice Pack for the Galaxy S8+ doesn't come with the headphone adapter. All the other Mophie cases I've bought in the past do come with this adapter. Why the change?
As the headphones that come with the Galaxy S8+ are compatible with our juice pack no headphone adapter is needed.
Date published: 2017-07-19
I got my juice pack for my S8+ and was so excited only to discover there is no power button for the phone. I have the Bixby and volume buttons but no power button. It is just a cut out and my finger can't even reach it. Is this normal? Thanks
No, there should be a pass-through button on the juice pack. Please reach out to our technical support team at www.mophiewarranty.com to get a warranty replacement.
Date published: 2017-06-13
Is an otg adapter not supposed to work? Mine doesn't work on my case if so.
Use the USB-C cable supplied with your Galaxy S8 or Galaxy S8+ phone to charge your juice pack case by connecting it to the USB-C wall adapter included with your phone, or a USB-C car charger. This will allow the case and phone to charge at the fastest speeds available from the adapter or charger.
If you feel your juice pack is not working as it should, Please contact our Technical Support team at 888-866-7443, as they can best advise on a solution.
Date published: 2018-10-31
Hi there, Want to buy Juice pack for S8 plus in Australia and no one seems to carry it other than eBay and some onther unofficial retailer's. If I buy from them, does they carry factory warranty? If not, do you ship to Australia?
We suggest checking out our Global Retail Partners at: http://www.mophie.com/retail-partners. You can also scroll to the bottom and search your region. We hope this helps, and thank you for your interest in mophie.
Date published: 2017-11-20
Does the mophie interfere with the file transfer and camera download feature when charging or connected to you computer
No, the juice pack for the Galaxy S8+ does support syncing.
Date published: 2017-06-13
I'm looking for a battery case with a flip cover for my Samsung 8 plus
At this time, we do not offer a flip cover for the Samsung S8+
Date published: 2018-09-04
How is the lay on table design of the case? Is the juice packs lip big enough to protect my S8+ from a face down drop? Also can I still use Samsung Pay with this case?
The juice pack for the Galaxy S8+ has a low-profile design with high-impact protection built into the case’s design which 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.
The juice pack will not impede LTE or WiFi signals, but due to the need for NFC to be used in very close proximity, your ability to use NFC will vary on the application it is used for, and the strength of both the signal from your phone, and the signal from the other device. As we do not test the case for functionality with NFC, we cannot guarantee that this will work in all instances.
Date published: 2017-11-17
It's for a Samsung galaxy s8+ I dont see it on your website .
Yes, this juice pack is designed for the Samsung S8+
Date published: 2017-09-27
Reviews
juice pack is rated
out of
5 by
79.
Rated 5 out of
5
by
Tamarasellstx from
Battery never runs out
The first one I received didn't work but I called and they sent me another one and it works great!! Wouldn't know what to do without my extra battery.
Date published: 2018-11-07
Rated 5 out of
5
by
Nickie from
Great warranty service
Bought this Mophie at the recommendation of the Sprint salesperson. It worked great for 18 months, when the buttons stopped aligning with the phone power and volume buttons. Called Mophie for warranty service, and the company replaced the unit with a new one immediately. Highly recommend this company.
Date published: 2018-10-14
Rated 5 out of
5
by
Dre84 from
Love it!!!
Had it 3 month and can't live without it, wish I had bought it sooner.
Date published: 2018-09-20
Rated 5 out of
5
by
George Bar1960 from
Great design, protection and battery life.
Owned one before for Samsung 7 edge and HAD to have one for my Samsung 8+.....I never leave home without it.......I use my phone ALL day long including games and I never run out of battery......AMAZING!!!
Date published: 2018-01-11
Rated 5 out of
5
by
900hphemi from
Excellent fit and quality!!
I purchased the Mophie case for my Samsung Galaxy S8+, Fit and finish is top notch and with extra power on reserve I never have to look around or try to find a power source. Thank you Mophie!!
Date published: 2017-09-22
Rated 5 out of
5
by
Kellytx1 from
Keep my phone charged
I am a heavy user, by the end of the work day my phone is at 97%. My only complaint is it ugly. You need to make some stylish ones.
Date published: 2017-09-19
Rated 5 out of
5
by
mama from
love the extra power and protection!
my s8+ and s7edge+ last TWO days of constant use with youtube, internet, tune in radio and audio books. i work overnights and blutooth my earphones to the smartphones which sucked up alot of battery juice. now i dont end up with 5% battery left on my way home, i have better than 50% (more like 65%). getting one for my note 8 as SOON AS it comes out. drop protection is excellent! dropped s8+ with mophie battery case on concrete floor 4 feet, case came apart but snapped right back together and the phone was just fine!! would love to see a way to securely attach a lanyard!
Date published: 2017-09-05
Rated 5 out of
5
by
mal9917 from
Awesome phone case!
I love this case. It is on the heavy side, but provides good protection and love the extra battery life that it provides. Another excellent product by mophie!
Date published: 2017-09-05



