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

$49.95 In stock

power reserve

Made for Devices with a micro USB connector

power reserve

Made for Devices with a micro USB connector
Lightweight and compact design with a convenient key ring & integrated charging cables means your smartphone is always ready for a charge whenever you need.

Add Accessories Save when bundled with this product

  • Power that comes along for the ride.

    Keep the power reserve connected to your keychain for charging on-the-go. Up to 60% extra battery means this is the perfect solution for your smartphone and the compact design makes it easy to carry wherever you're going.

  • Quick release button

    Effortlessly disconnect from your key chain to charge your device. No Sweat.

    Quick release

    Up to 60% Extra battery

    Get that boost of reserve power when your battery is seriously low and you need it most.

    60% extra battery

    LED power indicator

    Push the power indicator button to display the charging status and current battery life.

    LED power indicator
  • Be sure to always
    travel light.

    Equipped with an integrated, hidden yet flexible micro USB cable, this extremely small and rechargeable battery pack is always ready for a quick departure. Just release your power reserve from the key ring to expose the cable and start charging.

WARNING: Cancer and Reproductive Harm -

Tech specs

  • Battery Capacity


  • Compatibility

    Devices with a micro USB connector

  • Dimensions

    1.50 x 2.84 x 0.55 in (38.1 x 72.1 x 14.0 mm)

  • Weight

    1.97 oz (55.9 g)

  • Product Skus

    2323, 2417, 2418

  • Warranty

    2 Year Warranty

  • Manual

    Download here

  • Legal

    View here


Where could I purchase a replacement keychain? I lost the keychain piece but still have my mophie battery, and I really want to continue using it! 

Asked by: Grant H
We do not have replacement key chains available for purchase but we would be happy to offer a replacement through our warranty. Please visit to get the ball rolling on your warranty claim.
Answered by: Victoria O
Date published: 2017-05-19

Is this item compatable with iPhone?

Asked by: TPowell58
No, the power reserve is only compatible with devices that charge via micro USB.
Answered by: Victoria O
Date published: 2018-10-21

Trying to register product having trouble with Serial Number 

Asked by: Paupaufuent
We'd be happy to assist you with registration. Please give us a call at 888-866-7443.
Answered by: Anne T
Date published: 2018-04-30

I lost the keychain today and my mophie is a gift so I don't know if there's a warranty. Where can I get a new keychange please? I was about buying a new mophie but can't find it anywhere :( ... Thanks for feedback

Asked by: ABLB
Oh no! We're sorry to hear that. Please contact our Customer Support team at 888-866-7443 as they can assist you with a solution.
Answered by: Anne T
Date published: 2019-06-27

I recently purchSed this item, and maybe I’m doing it wrong, but I can’t get it to work more than a few seconds. I charge it fully, turn on the device, plus it into my phone and it shows it is charging for a few seconds and then stops. Help! :)

Asked by: Lindsey B
Hmm. We'd be happy to look into this. Please give us a call at 888-866-7443 to discuss what the issue might be.
Answered by: Anne T
Date published: 2018-03-21

Does this came with Type C port?

Asked by: Nasirsiddique
No, it does not.
Answered by: Anne T
Date published: 2018-05-02

Where is the data as to how much a charge this external battery gives to a smartphone?  2X? .5X? I have no sense as to what 1350 mAh.  Thx

Asked by: Arlene
The power reserve will offer an iPhone 6 plus/ 6s plus about 50% extra battery.
Answered by: Victoria O
Date published: 2018-02-17
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power reserve is rated 3.0 out of 5 by 2.
Rated 5 out of 5 by from Compact life saver I work as a programmer and bought this 2 months ago cycling around Dublin after work, for my iphone 6s. Life saver when my phone battery started to go. Really fast and very reliable. Best recharging product as its so light and small
Date published: 2017-07-02
Rated 1 out of 5 by from Not working I like the slink appearance and I had one before so I’d like to order one more for my friend. Unfortunately this one is not working
Date published: 2018-09-10
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