JuiceDefender Personalization


Packed with features and fully customizable, JuiceDefender optimizes power consumption to give you extra hours of precious battery life.

JuiceDefender Automatic


JuiceDefender runs by itself, improving battery life behind the scenes by intelligently managing the battery-draining components of your phone.

JuiceDefender Easy-to-use

Easy to use

Tired of wandering through menus all the time? JuiceDefender simplifies and automates battery saving through an easy to use interface.

Get JuiceDefender from the Android Market

It's Free.

Droid with megaphone

A powerful yet simple battery manager app

Being online at any time and any place is what smartphones are all about. But this continuous connectivity comes with a pretty annoying drawback: high power consumption, hence short battery life.

JuiceDefender extends your battery life by intelligently and transparently managing the most battery-draining components of your Android device, like 3G/4G connectivity and WiFi.

It is ready to go right after installation: the preset modes are the perfect way to easily gain precious hours of battery life - it's literally as easy as one tap!

And if you want to go under the hood, you can tweak everything to your unique needs, because JuiceDefender is also fully customizable through a clean and intuitive user interface.

Once configured, JuiceDefender runs by itself, improving your battery life in a fully automated manner.

Try it for a few days and see for yourself - it's free!

Start saving battery today - install JuiceDefender now!

With JuiceDefender you can easily keep power consumption under control (e.g. disabling connectivity when the battery runs low), schedule regular synchronization events, enable or disable connectivity for specific apps, auto-toggle WiFi depending on your location, and much more.

Run at full capacity when you need it, save battery when you don’t!


  • 5 preset profiles (from default mode to full customization)
  • easy and intuitive user interface (ads free!)
  • 2 home screen widgets
  • mobile data toggle automation
  • 2G/3G toggle automation**
  • WiFi toggle automation + auto-disabling option
  • location-aware WiFi control (e.g. enable WiFi only at home/work, disable it otherwise)
  • battery consumption optimization (e.g. when screen off, battery under threshold, etc.)
  • comprehensive connectivity scheduling (regular schedule, night time/peak time, week days/weekends)
  • connectivity control for specific apps (e.g. when Pandora is running, leave connectivity on no matter what)
  • CPU scaling when phone is idle**
  • full activity log

* some features require JuiceDefender Plus or Ultimate

** might be unavailable if not supported by your ROM

JuiceDefender Screenshot JuiceDefender Screenshot

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JuiceDefender Reviews

Should you Download JuiceDefender? Yes! Must Have Android App! [Android Tapp]

This app works some simple but clever magic. [cnet]

Easily double your Android battery life and even triple or quadruple it. [TheDroidDemos]

I went from 16 hours of use to 48 with a Nexus One. I wholeheartedly recommend this app. [DroidDog]

The slick interface turns what some consider a daunting task into a point and click process. [GigaOM]

JuiceDefender’s creator seems to have put in real work at making his app more transparent and useful. [lifehacker]

Its automated adjustments can make a noticeable difference in your phone's daily stamina. [PCWorld]

Who said there’s no such thing as a free lunch? [Life of Android]

I'd recommend JuiceDefender Ultimate wholeheartedly. It definitely works. And hey, think about how much you're saving compared to an extended battery! [androidcentral]

It's worth every penny. [The Android Authority]

The clever management system will squeeze every drop of juice. [GizmoCrunch]

You will be impressed by the amount of battery that you actually save! [Best Android Apps Review]