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mophie - Juice Pack External Battery Case for Samsung Galaxy S8+ - Black

Keep your Samsung Galaxy S8+ charged and protected with this mophie juice pack battery case. Its rubberized interior guards against drop impacts, and its 3300 mAh battery adds 60 percent more power to your phone. This mophie juice pack battery case's forward-facing speaker ports maintain the stereo output quality of your device.
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    What's Included

    • mophie Juice Pack External Battery Case for Samsung Galaxy S8+

    Ratings & Reviews

    Overall Customer Rating:
    91% of customers would recommend this product to a friend (146 out of 162)


    Designed for use with Samsung Galaxy S8+ cell phones

    For a precise fit.

    3300 mAh capacity

    Delivers reliable backup power to your phone.

    Wireless charging technology

    Charge by simply placing the case on any wireless charging base or with the phone's included USB-C cable and wall charger.

    Lightweight construction

    Minimizes bulk for simple portability.

    Priority+ charge & sync

    The phone charges first, and then the juice pack battery.

    Scratch-resistant design

    Protects your device against accidental damage.

    Built-in magnets

    Align with any mophie charge force mount for a perfect charge every time.

    Impact drop protection

    Safeguards against harm caused by accidental drops.

    LED power indicator

    Displays battery charge levels and charge status.

    Customer rating

    Rating 4.4 out of 5 stars with 162 reviews

    would recommend to a friend



    Most relevant reviews

    See all customer reviews
    • Rating: 2 out of 5 stars



      this is my first morphie product. i just bought this 3 days ago for my s8 + pros: i like the nice look and design, it has a nice matte finish on it and i love the feel of it in my hand. this may be a con but not for me, it will make the phone feel heavier, which i kind of like( personel preferences). it support wireless charging and has a magnet to allow the device to stick to battery pack or wireless charging pad. con: the price may turn off some, the case is a bit bulky and you need to reach in to get to the finger print button. my biggest problem is the battery life,i tested it multiple time and it can only charge my phone to 80% most of the time, sometimes even less. i expect more from a 100 $ device. this is a less than average battery case, pricy, not a good battery life, there are cheaper option with better battery capability on the market.

      No, I would not recommend this to a friend

    • Rating: 1 out of 5 stars

      Didn't Fit Galaxy S8 Plus Too Tight

      • My Best Buy® MemberMember

      I have used Mophie packs on my Galaxy S5, and Galaxy S7 Edge. I bought one for my new S8 Plus, and had to return. It was extremely difficult to slide the pack onto the S8 Plus, often popping off before I could completely install. Once I did get it installed, my phone constantly started to reboot on its own to the Boot Menu and/or Safe Mode. The volume rocker was so tight, I couldn't adjust the volume, and it was forcing my volume down to stay compressed, which caused the reboots. When I removed, I noticed that front part of the pack which presses against the back of the phone was bowed up, possibly causing the too tight fit. Almost seemed as though the case was swollen. Perhaps a bad battery ? Had to return, and get a non charge case. I was extremely disappointed, as my previous experiences with Mophie were great.

      No, I would not recommend this to a friend

    • Rating: 5 out of 5 stars

      Very happy with my purchase.

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      This is a must have for any heavy GS8+ user, you'll always have a full days and more power for your phone. The way it works, is you charge your phone through the port on the battery case, and once that's fully charged, the battery case will then proceed to get charged. When your phone is getting low on power, you press and hod the button on the battery case for three seconds, and it'll then charge your phone. Also a good thing to note is, to never place this battery case on a magnetic surface other than any wireless chargers you may have, because doing so will charge the phone and not correctly which in turn will damage the battery case and possibly the phone. Use chargers that are made for this case or phone.

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      Can be misleading at times

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      I absolutely love this battery pack with my S8. It basically charges my phone to full with 35% left, kinda heavy but it's a battery and a case so what can you expect. Love the way it wraps around my phone whilst keeping the roundness of the phone. If you haven't noticed there are speaker grills on the bottom that angle the sound towards you instead of away from you, so helpful. The preview one tap thing can sometimes be misleading as it shows one led sometimes but when you hold the button down it's actually full. Other than that amazing product.

      I would recommend this to a friend

    • Rating: 4 out of 5 stars

      Good but has some tradeoffs

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      This is perfect while on a vacation especially if you take lots of photos. Had plenty of power for the entire day, including listening to music and surfing the socials. The only complaints would be that it's a little slick while holding and when using on a samsung charge pad, it must be perfectly aligned for it to charge. The extra weight is acceptable for the extra battery power when needed without carrying anything extra.

      I would recommend this to a friend

    • Rating: 3 out of 5 stars

      Nice but heavy. My unit was defective

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite Plus MemberElite Plus Member

      This is a really battery case. I like the priority charging capability where it charges your phone first and then case. I have mophie wilreless battery pack and car vent mount as well. This case goes really well with them. Only downside is this is a bit heavy case but you get used to it after sometime. Also, my unit was defective. It wont hold charge. Once fully charged, it will get discharged fully in few hours even if it is not used.

      I would recommend this to a friend

      • Brand response


        Please reach out to our customer service team for warranty information.

    • Rating: 5 out of 5 stars

      Great protection and charging at the same time

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      Best case and charging capability at the same time. This is my third mophie case. Only because I buy one wherever I get a new phone. Because of this charging case I saved money due to not buying the phone protection plan. I have dropped my all my phones by accident on concrete, asphalt, etc. And my Mophie cases have always saved my phones from damage. Lastly the convenience of charging my phone easily is great.

      I would recommend this to a friend

    • Rating: 4 out of 5 stars

      Great cell phone case

      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      Really good cell phone case. It is heavy but helps protect the camera and is easy to understand how much battery you have and how to charge your phone with the case. I like that it is not a trickle charge like some cell phone battery pack cases but is only in use when you decide to use it. Only complaint is that it does not charge your phones battery completely. It only charges it about 60-65%.

      I would recommend this to a friend

    Product images, including color, may differ from actual product appearance.