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juice pack

Made for Galaxy S4
$99.95    $49.95
Power and protection seamlessly integrated to create the ultimate case solution for your Samsung Galaxy S4. The 2300mAh battery will provide up to 80% extra power with the flip of a switch while the protective hard-shell case keeps your phone safe from daily wear and tear.

  • You're covered all day, everyday.

    Its slim design makes it easy for the juice pack to become your everyday case while still providing complete protection from your busy lifestyle. A smooth finish and pass-through buttons flawlessly blend the design of the case with your Galaxy S4. To make sure you always head out with two fully charged batteries, charge your S4 and juice pack simultaneously with the included micro-USB cable.

  • Continuing innovation from the makers of the original juice pack.

    Thousands of engineering hours and meticulous testing have resulted in mophie creating the highest battery density, most efficient power management solutions available today. The juice pack made for Galaxy S4 is no exception. Designed to keep your phone fully protected and providing up to 80% extra battery, this juice pack is slim enough to easily fit into any pocket or handbag.

  • Added features for ease of use.

    The juice pack was designed with ease of use in mind. A standby switch lets you charge your phone only when you need it. Recharge both devices simultaneously by connecting your juice pack and phone to any USB wall plug. Connect to a computer to charge, sync and download photos and other files.

    Four LED lights on the back let you keep tabs on how much power is left in the juice pack battery, and, when charging, will keep you updated on its status.

Technical specs

  • Product dimensions 2.92 in x 5.91 in x 0.66 in
    Weight 4.59 oz
    Compatibility Galaxy S4
    Battery capacity 2300mAh
    Warranty 1 Year Warranty
    Manual Download here
    Product SKUs 2325, 2326, 2335, 2336
    Package contents juice pack, micro USB cable
    Patents View here

Frequent questions

  • How does it work?
    The mophie juice pack has a rechargeable lithium battery inside. When you slide your phone into the case, a connector at the base plugs into the micro-USB port at the bottom of your S4. When your phone gets low on battery power, just flip the standby switch on the back of the juice pack from red to green to start charging your phone. After using up all the power in the juice pack, just recharge it with the included micro USB cable for more on-the-go power. It's as easy as that.
    How do I charge the mophie juice pack?
    Simply connect the juice pack to a USB power source, like a wall charger, car charger or your computer, with the included micro-USB cable. You can charge the juice pack while it's on or off your phone. If you charge with the case on, it will also charge your S4!
    Can I sync my S4 while the juice pack is on my phone?
    Yes! You can charge and sync your S4 without removing the juice pack via the included micro-USB cable. Pretty cool, huh?
    How do I get the most battery power out of the juice pack?
    Correctly using the standby switch will give you the best battery boost. The S4 uses extra power to be on a constant charge, so charging only when you need power is the best way to use the case. We recommend waiting to charge until your phone is down to 20% or less. Limited use of your phone while charging will also increase the percentage of battery the juice pack will give you.
  • How many charge cycles do you get out of the juice pack? Or, in other words, how long will the case last?
    The juice pack is rechargeable for over 500 full cycles. A full cycle is when the case is charged from 0% to 100%. Partial cycles, like charging from 25% to 100%, will not count as a full cycle until all of the partials equal 100%. It's only after 500 cycles that the battery in the juice pack will be less than 75% of the original capacity. This is normal for any product with a lithium battery.
    Will I always receive double the battery life with the juice pack?
    It is not guaranteed that you will receive double the battery life. The amount of additional battery you will receive from the case depends on a variety of factors that are different for every user.
    Will the juice pack charge any other Android phones?
    No. This juice pack is compatible only with the Samsung Galaxy S4. You can, however, use one of our powerstations to charge virtually any other smartphone!