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mophie juice pack reserve®

External battery for 30-pin connector iPhone®/iPod®

Item #: 833JPRSRVE

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Original Price: $34.99

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mophie juice pack reserve

Small enough to keep in your pocket with your keys

Picture this: you're at a sporting event and your iPhone 4 needs a recharge. Or you're in a plane and your iPod is about to run out of power, leaving you tuneless. Wouldn't it be great to just reach into your pocket and pull out a spare battery? With the mophie juice pack reserve, you can — and you don't have to mess around with a bunch of cables, either.

The compact juice pack reserve is made for on-the-go use. Its USB charging cable folds neatly into the casing. Flip the top to reveal the 30-pin connector for your Apple portable. Just slip it into your pocket, handbag, or backpack, and you're ready to go — or just hang it off your belt loop or keychain. A built-in LED indicator lets you know the battery's charge status.

Note: Not for use with an iPad®

Product Highlights:

  • for iPhones and iPods with 30-pin connector
  • LED charge indicator
  • attached keychain
  • integrated USB charging cable and 30-pin connector cable
  • 700mAh built-in rechargeable lithium polymer battery
  • 3-1/16"W x 1-5/16"H x 5/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • not recommended for use with iPads

mophie juice pack reserve® Reviews

Hands-on research

What's in the box?

Download owner's manual

  • Portable battery charger (for 30-pin iPod/iPhone)
  • User Manual

Product Research


Compatibility: The Mophie Juice Pack Reserve is an external battery pack designed specifically for Apple iPods and iPhones with a 30-pin dock connector. The Juice Pack Reserve battery pack supplies power to your compatible Apple device and charges its battery. Compatible with the following iPods and iPhones with 30-pin connector.

iPod iPhone iPad
video (5th gen) 2G Not recommended.
 classic (80/120/160GB) 3G
nano (1st/2nd/3rd/4th/5th/6th gen) 3GS
touch (1st/2nd/3rd/4th gen) 4
Note: Does not support Apple devices with new Lightning connector.

Built-in Connectors: The Mophie Juice Pack Reserve features a built-in Apple 30-pin dock connector with a protective cap and a flexible USB (type-A) connector. Both connections stay hidden until you are ready to charge the battery pack or connect your Apple device.

Rechargeable Lithium-Polymer Battery: The Juice Pack Reserve features a rechargeable lithium-polymer battery rated at 700mAh. You can connect the Juice Pack Reserve to your computer's USB (type-A) port or any "Works with iPhone" wall-plug style power source with a USB (type-A) out, including the standard Apple USB/AC adaptor (sold separately). The battery pack is rechargeable for over 500 full cycles. Partial cycles don't count as full, so you can charge your juice pack 10% of the way ten times before you get to a complete cycle.

Note: You cannot charge the Juice Pack Reserve battery pack and your Apple device at the same time.

Smart Battery Technology: Smart Battery technology automatically turns power on when the Juice Pack Reserve is connected to your device and turns off when disconnected.

LED Indicator: You can track the Juice Pack Reserve's battery power status at a glance with its integrated LED power indicator. During a charge, the LED power indicator will blink red, then transition to orange, then green and will remain blinking until completely full.

  • Green: Full charge
  • Orange: Half charge
  • Red: Low charge
  • No LED: Connect to power

Protection Circuitry: The Juice Pack Reserve external battery pack features built-in short circuit, over-charge, and temperature protection.

Key Ring: The Juice Pack Reserve battery pack features a convenient key ring, so you can keep it with you on the go.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.