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mophie juice pack®

Samsung Galaxy® S III protective case with built-in rechargeable backup battery (White)

Item #: 833JPSGS3W

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Running around town or running to catch a plane, there's one thing you don't need — a smartphone with a depleted battery. Good luck finding an open outlet to recharge your phone in an airport, store, or city street! Enter the mophie juice pack. This protective case features a built-in battery with enough power to keep your Samsung Galaxy S III going for hours after its battery has run out.

mophie juice pack for samsung galaxy S III

Double your smartphone's battery life

Slip your Galaxy S III onto the juice pack connector and close the case. It's now connected to a built-in rechargeable battery that can greatly increase your reserve of power — enough for up to 9 additional hours of talk or Internet use, or up to 32 more hours of audio playback. You can set the juice pack to keep your smartphone continuously charged, or with a button press recharge it all at once.

An all-access case

The juice pack has a USB charging cable that can connect to a computer or USB-compatible power adapter. And good news — you can sync your Galaxy S III through the air's charging cable. Integrated pass-through buttons let you control volume, mute, and power on/off.

Product Highlights:

  • for Samsung Galaxy S III smarphone only
  • full case protection with openings for camera lens and headphone jack
  • pass-through on/off, volume and mute controls
  • LED charge indicator
  • toggle between active charging and standby
  • simultaneously recharges battery and smartphone with USB charging cable (included)
  • 2300mAh built-in rechargeable lithium polymer battery
  • pass-through headphone jack cable
  • 3-1/16"W x 5-15/16"H x 3/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

mophie juice pack® Reviews

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What's in the box?

Download owner's manual

  • Protective Samsung Galaxy S III smartphone case w/ built-in battery pack
  • 31" USB charging cable (w/ a USB type-A connector on one end and a microUSB type-B connector on other end)
  • User Manual

Product Research


Mophie Juice Pack (for Samsung Galaxy S III): The Mophie Juice Pack combines a protective case and rechargeable battery for your Samsung Galaxy S III smartphone. The Juice Pack has a built-in rechargeable battery which extends the battery life of your Galaxy S III for hours. The Juice Pack also provides an ultra-slim design with the complete protection of a form-fitting hard shell case. With the Juice Pack , you'll be able to easily access all of your controls, microphone, camera speaker, and headphone jack. It also has acoustic sound enhancing speaker ports for a richer, fuller sound quality.

Extended Battery Life: Since it is designed to extend the battery life of your Galaxy S III by up to 100%, the Mophie Juice Pack is the ultimate Galaxy S III battery case for travel or business. The Juice Pack is great for when your Galaxy S III is drained of power or you simply one to extend its battery. When the Galaxy S III is connected to the Juice Pack , a battery symbol will appear on the screen and you will hear a chirp from the Galaxy S III; this indicates that the Galaxy S III is charging and/or using the power from the Juice Pack rather than from the Galaxy S III itself.

  • Talk Time: up to additional 9 hours on 3G or up to 7 additional hours on 4G
  • Internet Use: up to additional 9 hours on 4G or up to additional 11 hours on WiFi
  • Audio Playback: up to 32 hours
  • Video Playback: up to 8 hours
Note: If your Galaxy S III is drained of power, the Juice Pack will first charge your Galaxy S III. If your Galaxy S III is fully charged, the Juice Pack will act as your primary battery and no power will be lost from the Galaxy S III's internal battery until the Juice Pack is depleted

Rechargeable Battery: The Mophie Juice Pack features a rechargeable lithium-polymer battery rated at 2300mAh. The Mophie Juice Pack battery can easily be recharged by connecting the Juice Pack to a power source using the included micro-USB cable. The USB cable can be plugged in to your computer or any wall-plug style power source with USB output. You can either charge the Juice Pack with the Galaxy S III inserted or charge them separately. The Juice Pack comes charged and ready to go, but after the initial use, normal charging will take only 2 to 3 hours for maximum power.

Note: The Juice Pack is rechargeable for over 500 full cycles. So, you can charge your juice pack 10% of the way 10x before it counts as a complete cycle. After 500 cycles, its fully charged capacity will be less than 75% of the capacity when it's new.

Sync & NFC Compatible: You can sync your Galaxy S III to Google Play without removing it from its Mophie Juice Pack via the included micro-USB cable. The Juice Pack will also charge while connected to your computer and syncing. The Mophie Juice Pack is also completely S Beam and NFC compatible, so don't worry about the protective case getting in the way of sharing with your friends.

Standby Mode: The integrated power switch allows you to put the Juice Pack in standby mode, so you only use the battery when you need it. In standby mode, the Juice Pack still allows charge and sync capabilities through the micro-USB port and still offers the complete protection of a case.

4 LEDs: Four LEDs on the bottom of the smart battery case keep tabs on how much power is left in the Juice Pack battery. The LEDs also keep you updated on the Juice Pack charging status when it's plugged in. The LEDs located on the back of the device will blink when charging. As the Juice Pack becomes more charged, the LEDs will indicate how full it is, but one LED will remain blinking until completely full. To check the battery status of the Juice Pack , press the button located on the bottom of the case. When pressed, the LED lights will illuminate for several seconds. Four LEDs means that the Juice Pack is fully charged, and one LED means that it is almost empty.

Protection Circuitry: The Mophie Juice Pack features built-in short circuit, over-charge, and temperature protection.

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