Main Content

power cases

Best Buy customers often prefer the following products when searching for Power Cases.

Browse the top-ranked list of Power Cases below along with associated reviews and opinions.

Browse the top-ranked list of Power Cases below along with associated reviews and opinions.

Main Results
  1. Top comment

    "This is a good reliable charging case....We're not really sure how much protection this case provides, but just based on how it looks and feels, it appears to give a fairly significant layer of security against typical bumps, drops, etc., but I wouldn't go so far as to say it's as good as a high end case designed solely and specifically for the purpose of protection"

    "This is a good reliable charging case."

    Hear more from customers

    Product Description

    Flip the switch on this mophie juice pack air, and give your iPhone 7+ or 8+ extra power for talking or scrolling through social media. The hard-plastic construction adds additional protection without adding weight. Simply slide your phone into the mophie juice pack air, connect it with the lightning charger and get up to 28 hours of additional calling power.
    Your price for this item is $79.99
    Save $20
    The previous price was $99.99
    Top comment

    "This is a good reliable charging case....We're not really sure how much protection this case provides, but just based on how it looks and feels, it appears to give a fairly significant layer of security against typical bumps, drops, etc., but I wouldn't go so far as to say it's as good as a high end case designed solely and specifically for the purpose of protection"

    "This is a good reliable charging case."

    Hear more from customers

    Product Description

    Flip the switch on this mophie juice pack air, and give your iPhone 7+ or 8+ extra power for talking or scrolling through social media. The hard-plastic construction adds additional protection without adding weight. Simply slide your phone into the mophie juice pack air, connect it with the lightning charger and get up to 28 hours of additional calling power.
  2. Top comment

    "Does a great job...last a long time...Very good battery case!...While not officially sanctioned by Apple, this Mophie case fits the iPhone 7 snug as a glove, and at the same time provides double the capacity of battery power as a battery pack, plus allows you to charge wirelessly with any Qi enabled charging pad (such as the Insignia pad we picked up on the same trip)"

    "Very good battery case!"

    Hear more from customers

    Product Description

    Add additional talk time to your iPhone 7 or 8 with this mophie Juice Pack smartphone case. It shields your smartphone from the elements and drops thanks to the polycarbonate material and rubberized supports while providing access to the ports and the camera. With an integrated battery that works with Qi charging systems for wireless charging, this mophie Juice Pack smartphone case keeps your phone running for longer.
    Your price for this item is $55.99
    Save $44
    The previous price was $99.99
    Top comment

    "Does a great job...last a long time...Very good battery case!...While not officially sanctioned by Apple, this Mophie case fits the iPhone 7 snug as a glove, and at the same time provides double the capacity of battery power as a battery pack, plus allows you to charge wirelessly with any Qi enabled charging pad (such as the Insignia pad we picked up on the same trip)"

    "Very good battery case!"

    Hear more from customers

    Product Description

    Add additional talk time to your iPhone 7 or 8 with this mophie Juice Pack smartphone case. It shields your smartphone from the elements and drops thanks to the polycarbonate material and rubberized supports while providing access to the ports and the camera. With an integrated battery that works with Qi charging systems for wireless charging, this mophie Juice Pack smartphone case keeps your phone running for longer.
  3. Top comment

    "Great for a gift...Not bulky at all...Great Battery Case...One last point is the Apple smart battery case hardly ever got hot compared to a third-party case I had brought off of eBay which did get very hot if even in a pocket for a few minutes"

    "Great Battery Case"

    Hear more from customers

    Product Description

    The Smart Battery Case for iPhone 7 gives you extra battery life with the look and protection of an Apple-designed case. Combined with the Smart Battery Case, iPhone 7 provides up to 22 hours of battery life for browsing the web, up to 24 hours of watching HD video, and 26 hours of talk time.¹ The Smart Battery Case also works intelligently with your iPhone to charge simultaneously when you’re plugged in, so both case and iPhone will have more than enough battery life to get you through the day, and then some. The soft elastomer hinge and one-piece design make it easy to put the case on and take it off. You can even connect it to any Lightning accessory, such as the Lightning Dock. And iOS 10 allows you to see the battery status of your iPhone 7, your Smart Battery Case, and even your Apple Watch, all in one place. Available in black and white.
    Your price for this item is $99.99
    Top comment

    "Great for a gift...Not bulky at all...Great Battery Case...One last point is the Apple smart battery case hardly ever got hot compared to a third-party case I had brought off of eBay which did get very hot if even in a pocket for a few minutes"

    "Great Battery Case"

    Hear more from customers

    Product Description

    The Smart Battery Case for iPhone 7 gives you extra battery life with the look and protection of an Apple-designed case. Combined with the Smart Battery Case, iPhone 7 provides up to 22 hours of battery life for browsing the web, up to 24 hours of watching HD video, and 26 hours of talk time.¹ The Smart Battery Case also works intelligently with your iPhone to charge simultaneously when you’re plugged in, so both case and iPhone will have more than enough battery life to get you through the day, and then some. The soft elastomer hinge and one-piece design make it easy to put the case on and take it off. You can even connect it to any Lightning accessory, such as the Lightning Dock. And iOS 10 allows you to see the battery status of your iPhone 7, your Smart Battery Case, and even your Apple Watch, all in one place. Available in black and white.
  4. Top comment

    "I love this case...No issues so far...Good protection, good battery life....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"

    "Good protection, good battery life."

    Hear more from customers

    Product Description

    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.
    Your price for this item is $99.99
    Top comment

    "I love this case...No issues so far...Good protection, good battery life....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"

    "Good protection, good battery life."

    Hear more from customers

    Product Description

    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.
  5. Top comment

    "Seems to work OK...Works as it should...Great case with battery...All around top notch wouldnt expect less from Mophie You can get cheaper cases that do the same thing but they will not do it as FAST, as well and as dependably as the Mophie case"

    "Great case with battery"

    Hear more from customers

    Product Description

    Give your Samsung Galaxy S8 protection and backup power with this mophie juice pack battery case. Its 2950 mAh battery extends your phone's power by up to 60 percent, and its rubberized support pads provide reliable impact protection. Recharge this mophie juice pack battery case on a wireless charging base or with your phone charger.
    Your price for this item is $99.99
    Top comment

    "Seems to work OK...Works as it should...Great case with battery...All around top notch wouldnt expect less from Mophie You can get cheaper cases that do the same thing but they will not do it as FAST, as well and as dependably as the Mophie case"

    "Great case with battery"

    Hear more from customers

    Product Description

    Give your Samsung Galaxy S8 protection and backup power with this mophie juice pack battery case. Its 2950 mAh battery extends your phone's power by up to 60 percent, and its rubberized support pads provide reliable impact protection. Recharge this mophie juice pack battery case on a wireless charging base or with your phone charger.
  6. Top comment

    "I LOVE my Mophie...It's a nice case...Charges with ease even with phone installed....This is a great case as I work from my phone all day and used to charge my phone 3x a day"

    "Charges with ease even with phone installed."

    Hear more from customers

    Product Description

    Provide extra power for your iPhone X with this mophie Juice Pack Air battery case. Its 1720 mAh capacity and smart technology deliver a safe, quick charge, and the outer band and rubberized pads offer a secure cover for your device. This mophie Juice Pack Air battery case has a compact design and raised bezel for lightweight, reliable protection.
    Your price for this item is $79.99
    On Sale
    Save $20
    The previous price was $99.99
    Top comment

    "I LOVE my Mophie...It's a nice case...Charges with ease even with phone installed....This is a great case as I work from my phone all day and used to charge my phone 3x a day"

    "Charges with ease even with phone installed."

    Hear more from customers

    Product Description

    Provide extra power for your iPhone X with this mophie Juice Pack Air battery case. Its 1720 mAh capacity and smart technology deliver a safe, quick charge, and the outer band and rubberized pads offer a secure cover for your device. This mophie Juice Pack Air battery case has a compact design and raised bezel for lightweight, reliable protection.
  7. Top comment

    "A NICE SOLID CASE...As good as always...Great battery pack, but not automatic....Is a great case that offers great protection, my phone would be destroyed by now if wasnt for this case, the extra battery helps you a lot, it offers a great charge up to 40% which is great"

    "Great battery pack, but not automatic."

    Hear more from customers

    Product Description

    Enjoy your Samsung Galaxy S9 Plus more with this 2700 mAh mophie juice pack battery case. Its high-impact protection secures your device against damage in accidental bumps, and the Qi technology supports wireless charging systems. This black mophie juice pack battery case has raised corners to help shield your phone’s display.
    Your price for this item is $79.99
    Save $20
    The previous price was $99.99
    Top comment

    "A NICE SOLID CASE...As good as always...Great battery pack, but not automatic....Is a great case that offers great protection, my phone would be destroyed by now if wasnt for this case, the extra battery helps you a lot, it offers a great charge up to 40% which is great"

    "Great battery pack, but not automatic."

    Hear more from customers

    Product Description

    Enjoy your Samsung Galaxy S9 Plus more with this 2700 mAh mophie juice pack battery case. Its high-impact protection secures your device against damage in accidental bumps, and the Qi technology supports wireless charging systems. This black mophie juice pack battery case has raised corners to help shield your phone’s display.
  8. Top comment

    "I love this case...Big fan of Mophie...BEST NOTE 8 Battery Case...If I had one observation, and it's really a non-issue for me, it would be that the case is obviously a little heavier than a standard case/phone protector due to the battery - but again, I don't even consider this a drawback or a negative"

    "BEST NOTE 8 Battery Case"

    Hear more from customers

    Product Description

    Use your Samsung Galaxy Note8 longer with this mophie juice pack case. Its 2950 mAh capacity extends the battery life of your phone by up to 60 percent, and its wireless charging capability is compatible with Qi, PMA and mophie charge force systems. This versatile mophie juice pack case also works with your phone's USB-C charger.
    Your price for this item is $79.99
    Save $20
    The previous price was $99.99
    Top comment

    "I love this case...Big fan of Mophie...BEST NOTE 8 Battery Case...If I had one observation, and it's really a non-issue for me, it would be that the case is obviously a little heavier than a standard case/phone protector due to the battery - but again, I don't even consider this a drawback or a negative"

    "BEST NOTE 8 Battery Case"

    Hear more from customers

    Product Description

    Use your Samsung Galaxy Note8 longer with this mophie juice pack case. Its 2950 mAh capacity extends the battery life of your phone by up to 60 percent, and its wireless charging capability is compatible with Qi, PMA and mophie charge force systems. This versatile mophie juice pack case also works with your phone's USB-C charger.
  9. Top comment

    "Lasts a long time under the roughest circumstances....This case is one of the best it is strong steady durable you cannot go wrong with this case if you drop your phone it will not hurt the phone the case will keep it like new I would recommend everyone to try this case it will not disappoint you I will never buy any other case other than this one you must have this case if you do not have This case go and get it soon it will not disappoint you at all I give it a five star"

    "Lasts a long time under the roughest circumstances."

    Hear more from customers

    Product Description

    Guard your Apple iPhone SE, 5s or 5 against dirt and scratches with this OtterBox Defender Series 41171BBR case that features 3-layer protection with polycarbonate and silicone materials for durability. The included holster simplifies transport.
    Your price for this item is $25.99
    Save $24
    The previous price was $49.99
    Top comment

    "Lasts a long time under the roughest circumstances....This case is one of the best it is strong steady durable you cannot go wrong with this case if you drop your phone it will not hurt the phone the case will keep it like new I would recommend everyone to try this case it will not disappoint you I will never buy any other case other than this one you must have this case if you do not have This case go and get it soon it will not disappoint you at all I give it a five star"

    "Lasts a long time under the roughest circumstances."

    Hear more from customers

    Product Description

    Guard your Apple iPhone SE, 5s or 5 against dirt and scratches with this OtterBox Defender Series 41171BBR case that features 3-layer protection with polycarbonate and silicone materials for durability. The included holster simplifies transport.
  10. Top comment

    "Great battery life!...If you don't need the durability or don't want a bulkier case Otterbox also has a Symmetry case which is slimmer but offers less protection - I've one of those, too, and think that it's a great case as well"

    "Great battery life!"

    Hear more from customers

    Product Description

    Deliver rugged durability to your Samsung Galaxy S7 phone with this black OtterBox Defender Series phone case. A silicone skin and hard polycarbonate shell offer impact resistance for drops, and the thermal-formed screen protector defends against scratches.With its cutouts around the camera and ports, this black OtterBox Defender Series phone case provides effortless functionality for your device.
    Your price for this item is $29.99
    On Sale
    Save $20
    The previous price was $49.99
    Top comment

    "Great battery life!...If you don't need the durability or don't want a bulkier case Otterbox also has a Symmetry case which is slimmer but offers less protection - I've one of those, too, and think that it's a great case as well"

    "Great battery life!"

    Hear more from customers

    Product Description

    Deliver rugged durability to your Samsung Galaxy S7 phone with this black OtterBox Defender Series phone case. A silicone skin and hard polycarbonate shell offer impact resistance for drops, and the thermal-formed screen protector defends against scratches.With its cutouts around the camera and ports, this black OtterBox Defender Series phone case provides effortless functionality for your device.
  11. Top comment

    "Excellent, easy to use, keeps a great charge....I have already dropped the phone a few times and it is doing a better job of protecting than the New Kent case that was slimmer but after a drop resulted in having to get a replacement phone"

    "Excellent, easy to use, keeps a great charge."

    Hear more from customers

    Product Description

    With a high-impact polycarbonate shell, silicone skin and thermal-formed clear membrane, this OtterBox Defender Series 46044BBR case provides 3 layers of defense that safeguard your Apple iPhone 6 Plus or 6s Plus against dirt, scratches and damage.
    Your price for this item is $33.99
    Save $26
    The previous price was $59.99
    Top comment

    "Excellent, easy to use, keeps a great charge....I have already dropped the phone a few times and it is doing a better job of protecting than the New Kent case that was slimmer but after a drop resulted in having to get a replacement phone"

    "Excellent, easy to use, keeps a great charge."

    Hear more from customers

    Product Description

    With a high-impact polycarbonate shell, silicone skin and thermal-formed clear membrane, this OtterBox Defender Series 46044BBR case provides 3 layers of defense that safeguard your Apple iPhone 6 Plus or 6s Plus against dirt, scratches and damage.
  12. Top comment

    "I Love My Purchase...Fits great on phone...Love this battery case!...For an external battery case I feel that this has a really good grip to it as well as a lighter weight than some others I have seen"

    "Love this battery case!"

    Hear more from customers

    Product Description

    Attach a backup power source directly to your Samsung Galaxy Note9 with this mophie battery case. It protects your phone from damage during drops, and it has a standby switch to add power only when you need it. This mophie battery case has an LED indicator that shows the battery level and charging status.
    Your price for this item is $79.99
    Save $20
    The previous price was $99.99
    Top comment

    "I Love My Purchase...Fits great on phone...Love this battery case!...For an external battery case I feel that this has a really good grip to it as well as a lighter weight than some others I have seen"

    "Love this battery case!"

    Hear more from customers

    Product Description

    Attach a backup power source directly to your Samsung Galaxy Note9 with this mophie battery case. It protects your phone from damage during drops, and it has a standby switch to add power only when you need it. This mophie battery case has an LED indicator that shows the battery level and charging status.
  13. Top comment

    "Long lasting case...Purchased this case because a coworker recommended it, and as we work in a manufacturing environment and he has yet to break his phone, I figured that it was a great case to protect my new phone"

    "Long lasting case"

    Hear more from customers

    Product Description

    Preserve your Samsung Galaxy S8 with this blue OtterBox case. Its rugged design covers your entire phone to absorb shock from impacts. This OtterBox case has a holster that lets you clip your device onto your belt or bag strap.
    Your price for this item is $34.99
    Clearance
    Save $15
    The regular price is $49.99
    Top comment

    "Long lasting case...Purchased this case because a coworker recommended it, and as we work in a manufacturing environment and he has yet to break his phone, I figured that it was a great case to protect my new phone"

    "Long lasting case"

    Hear more from customers

    Product Description

    Preserve your Samsung Galaxy S8 with this blue OtterBox case. Its rugged design covers your entire phone to absorb shock from impacts. This OtterBox case has a holster that lets you clip your device onto your belt or bag strap.
  14. Top comment

    "Can wirelessly charge with no issues...Since the product is constructed from hard plastic, it will break from time to time but that's not a problem as the cases are guaranteed against breakage and the terrific customer service team will send out a replacement in a blink of an eye"

    "Can wirelessly charge with no issues"

    Hear more from customers

    Product Description

    Snap this OtterBox Defender case around your Samsung Galaxy S8 Plus for robust protection. Multiple layers of shock-absorbing material couple and covers keep debris from sensitive ports, jacks and buttons. This OtterBox Defender case resists dust and scratches to maintain the aesthetic appeal of your device.
    Your price for this item is $53.99
    Save $6
    The previous price was $59.99
    Top comment

    "Can wirelessly charge with no issues...Since the product is constructed from hard plastic, it will break from time to time but that's not a problem as the cases are guaranteed against breakage and the terrific customer service team will send out a replacement in a blink of an eye"

    "Can wirelessly charge with no issues"

    Hear more from customers

    Product Description

    Snap this OtterBox Defender case around your Samsung Galaxy S8 Plus for robust protection. Multiple layers of shock-absorbing material couple and covers keep debris from sensitive ports, jacks and buttons. This OtterBox Defender case resists dust and scratches to maintain the aesthetic appeal of your device.
  15. Top comment

    "It last and protects 100%....Since the product is constructed from hard plastic, it will break from time to time but that's not a problem as the cases are guaranteed against breakage and the terrific customer service team will send out a replacement in a blink of an eye"

    "It last and protects 100%."

    Hear more from customers

    Product Description

    Enjoy outdoor adventures without worrying about your phone by using this OtterBox Defender case. Triple-layer protection guards your Samsung Galaxy S8 Plus against shock, scratches and dust, and cutouts with covers maintain your access to ports.
    Your price for this item is $44.99
    Clearance
    Save $15
    The regular price is $59.99
    Top comment

    "It last and protects 100%....Since the product is constructed from hard plastic, it will break from time to time but that's not a problem as the cases are guaranteed against breakage and the terrific customer service team will send out a replacement in a blink of an eye"

    "It last and protects 100%."

    Hear more from customers

    Product Description

    Enjoy outdoor adventures without worrying about your phone by using this OtterBox Defender case. Triple-layer protection guards your Samsung Galaxy S8 Plus against shock, scratches and dust, and cutouts with covers maintain your access to ports.