2 Battery – Battery Saver

2 Battery - Battery Saver screenshot 1 2 Battery - Battery Saver screenshot 2 2 Battery - Battery Saver screenshot 3 2 Battery - Battery Saver screenshot 4 2 Battery - Battery Saver screenshot 5

Latest Version: 3.18

Updated February 25, 2015

What's New:

  • fixed crash errors for some devices

App Description

Does the phone run out of battery quickly? Does the phone always die at crucial moment? This app extends many extra hours to the battery life by managing Internet connection intelligently and in the background.

More Than 10,000,000 Downloads!

You don’t need to manually turn on/off the Internet connection anymore. This app extends battery life by using a smart algorithm to turn on/off the Internet connection, reduce battery consumption and data usage, but still keep the important background data synchronized.

  1. Auto manage 3G/4G/WiFi connection in the background
  2. Show battery level and usage in the status bar
  3. Efficient & easy to use

What customers are saying:

Installed 2 Battery Pro & got 5 DAYS. UNBELIEVABLE! Spent hours on setup for xx & only about 5 minutes with 2 Battery Pro. Would not have believed this was possible if I had not experienced it myself. (Marvin Jackson)

I had another, “easier”, battery saver installed on my new Neo V on Jan 18th. It consistently turned on background traffic and connection to mobile network costing me about 1MB/24h. 2 Battery saved my data package, not 1 Kb wasted! Needless to say battery performance improved by 30%-35%.Thank you! (Foivos L)

My battery life on HTC sensation is around 3-4 days now compared to 24 hrs before All other apps which I tried before, suck big time. Thumbs up! (patrick)

This is great. I had xx which worked well, but this makes it last literally like 3 hours longer. (Kelby)

Or take time to configure the settings to get the most out of it and the longest battery usage time!

Try PRO version for 24 hours and get a refund if you don’t like it.


  • Manage Internet connection intelligently in the background
  • Configurable enable intervals and settings
  • Detailed battery usage curve and information
  • Support whitelist and blacklist
  • Support night mode (PRO-only)
  • No ads (PRO-only)
  • Battery icon theme is changeable
  • Fully charged notification and low battery warning
  • Build-in screen filter to further reduce the screen brightness
  • Auto turn off the screen when you put the phone upside down on the table or into the pocket
  • Home screen widgets, battery level, quick settings
  • Display battery usage and time since last unplugged, estimated battery run out time, battery health status, voltage, temperature, etc. information


  • requires DashClock Widget by Roman Nurik
  • estimated battery run out time
  • detailed battery information
  • battery icon theme (battery icon & level, battery level)

Sony SmartWatch 2

  • warning when phone battery is low
  • phone battery app and widgets for battery level and remaining time
  • support low power mode
  • Smart Connect extension for SmartWatch 2

SmartWatch 1

  • warning when phone battery is low
  • phone battery app & widget
  • LiveWare™ extension for SmartWatch


AppNext 2013 best app ever awards

We have been selected as a Google I/O 2011 Developer Sandbox partner, for its innovative design and advanced technology.


  • Arabic – Feras Gazzawie
  • Croatian-Bruno Švorinić
  • Czech-Michal Fiurášek
  • Dutch-Niko Strijbol
  • French-Johan Jaworski
  • German-Michel Müller
  • Hungarian-Gulács Attila
  • Indonesian-Dwi Utomo
  • Italian-Michele Mondelli
  • Japanese-Yuanpo Chang
  • Korean-장승훈
  • Polish-Grzegorz Jabłoński
  • Portuguese-Wagner Santos
  • Romanian-Stelian Balinca
  • Russian-Идрис a.k.a. Мансур, Ghost-Unit
  • Slovak-Patrik Žec
  • Spanish/Swedish-Tomas Sylverberg
  • Turkish-Kutay KuFTi
  • Vietnamese-Trần Thanh Bình

Become a beta tester? Please join 2 Battery (http://goo.gl/vcHKs7) Google group.

If you are interested in helping us to translate this app to your native language, please let me know.

Older Versions



Added on May 26, 2012


  • no more show the notification icon if you select the “no icon” battery icon theme
  • removed Facebook from the default whitelist
  • only support Android 2.2 and greater devices


Added on June 15, 2012


  • bug fixed: battery level icon is not updated on Moto device
  • new auto screen off FAQ



  • fixed bug: some devices will auto enable the auto screen off option after rebooted
  • changed the default of battery power notification options to unchecked, and default sound to silent



  • fixed bug: some devices will auto enable the auto screen off option after rebooted
  • changed the default of battery power notification options to unchecked, and default sound to silent


Added on August 3, 2012


  • new transparent battery icon theme
  • tap the battery information area will show battery information (health, voltage…) in big text
  • show “battery life extended” and “battery run out time” information in bold
  • further optimize battery power consumption
  • fixed bug: should disable Utility menu item if app is disabled
  • smart watch: should not show the charging icon if app is disabled
  • fixed crash errors


Added on August 8, 2012


  • new transparent battery icon theme
  • tap the battery information area will show battery information (health, voltage…) in big text
  • show “battery life extended” and “battery run out time” information in bold
  • further optimize battery power consumption
  • fixed bug: should disable Utility menu item if app is disabled
  • smart watch: should not show the charging icon if app is disabled
  • fixed crash errors


Added on August 13, 2012


  • fixed bug: stop at the screen that only shows Wait


Added on August 24, 2012


  • also manage the WiFi connection in the background
  • show battery use information if you tap the battery icon on main window
  • show managed connections information on the main window
  • don’t auto enable the auto screen off function when 1×1 screen off widget added
  • require CHANGE_WIFI_STATE permission for toggling Wi-Fi
  • further optimize battery power consumption
  • removed “Pause when roaming” setting
  • fixed bug: not update 2×1 widget when plugging or unplugged
  • bugs fixed


Added on August 26, 2012


  • also deactivate the Auto screen off device administrator when app is disabled
  • fixed bug: the Delay to enable function may not work


Added on August 31, 2012


  • fixed drain battery too fast issue for some devices
  • fixed bug: should not show wifi-only message for some wifi/3G tables


Added on September 21, 2012


  • new screen filter 1×1 widget
  • auto backup (use Android Backup Service) 2x Battery settings to remote cloud storage, and restore settings when you reinstall 2x Battery
  • On the “Optimize battery life” window, you can tap check boxes to enable/disable the warnings for specific features
  • fixed memory leaks problem
  • bugs fixed


Added on October 5, 2012


  • new “Delay to disable” function
  • improved whitelist function that enables you to add foreground app (e.g. iHear Radio) into the list
  • support WiMax/4G devices
  • require CHANGE_WIMAX_STATE and ACCESS_WIMAX_STATE permissions for managing WiMax connection
  • French localization
  • new “Select language” function
  • fixed: should not turn on airplane mode when you are in a phone call
  • fixed: in night mode, should not turn on airplane mode in the background when tether or whiteapp is running


Added on November 2, 2012


  • new battery usage window. It can be invoked by tapping the big battery icon from 2x main window
  • also manage 4G connection for Samsung/Motorola devices
  • require CHANGE_4G_STATE and ACCESS_4G_STATE permissions for managing 4G connection
  • further optimize battery power consumption
  • added a manual page about the usage of main window
  • Korean localization
  • Romanian localization
  • add EnableAppAction/DisableAppAction actions for 3rd apps to call
  • minor bugs fixed


Added on December 21, 2012


  • show notification in native ICS style, bigger icon and more detailed battery info
  • new “Notify when stopped” setting
  • new 5,10 seconds options for “Delay to enable”/”Delay to disable” setting, PRO-only
  • further improve the power consumption
  • disable refresh network and set airplane mode functions for Android 4.2+ devices
  • fixed: should not turn on the airplane mode when in call
  • fixed: app will flash when you run it on Android 4.2+
  • Italian, Japanese, Russian, Swedish localization


Added on December 27, 2012


  • changed the default value of “Notify when stopped” option to false
  • bugs fixed


Added on February 1, 2013


  • further optimize the power consumption
  • new “Stay awake” settings
  • new notification “Priority level” setting for Jelly Bean or greater devices
  • don’t show redundant small battery notification icon for Jelly Bean or greater devices
  • Czech, lovak, Spanish, Vietnamese localization
  • fixed: not turn on the airplane mode at night in some cases
  • fixed: don’t show the STOP notification when WiFi is active and both “Manage WiFi connection” and “Stop when Wi-Fi on” options are unchecked



Added on February 8, 2013


  • fixed bug when the “Stay awake” option is checked


Added on March 2, 2013


  • new icon
  • new quick toggle/setting buttons. You can enable it by going to Settings > Notification. Only for Jelly Bean (4.1+) devices
  • new 2×1 widget style, also show temperature and the last update time
  • new screen off widget style



  • new “Function guide”, “Battery history” and “Help” menu item
  • don’t show the extra line when the notification action buttons option is unchecked
  • fixed bugs and force close errors


Added on May 23, 2013


  • added more notification action buttons, also enables you to directly toggle wifi/data/bluetooth options
  • new “Keep data when in call” setting
  • new “Data usage” quick system setting
  • require BLUETOOTH/BLUETOOTH_ADMIN permissions for bluetooth notification action buttons
  • Croatian, Dutch, Indonesian, Polish, Portuguese, Turkish localization
  • fixed: should show date/time format according to system’s settings
  • fixed: failed to launch mobile data settings
  • bugs fixed


Added on July 29, 2013


  • DashClock integration allowing you to see battery information on lock screen
  • new Whitelist side-menu item
  • support Android 4.2+ rooted device for toggling the airplane mode
  • support Android 4.1+ rooted device for toggling the mobile data option
  • require superuser/WRITE_SECURE_SETTINGS permissions for 4.1+ rooted devices
  • Slovenian localization
  • fixed bugs and force close errors


Added on September 26, 2013


  • new “big number” and “blue circle” battery icon theme. They are only available for PRO version
  • Thai localization
  • new “Start app log”/”Stop app log” menu items for App log window
  • updated FAQ page


Added on October 17, 2013


  • more options for “Enable interval”, “Delay to enable” and “Delay to disable” settings. Only available for PRO users
  • support Sony SmartWatch 2
  • add “Video Introduction” link on About page. Settings > About
  • bugs fixed


Added on November 22, 2013


  • new “Blacklist” function. It will disable the Internet connection when blacklisted app is running
  • new FAQ about how to fix “not restore WiFi connection when screen is on” problem
  • fixed: show wrong value when you select 30s or 45s for the “Delay to enable” setting
  • fixed: failed to restore WiFi connection for Samsung S4 device
  • fixed: still show battery notification icon on some Android 4.3 devices even though “No icon” theme is selected
  • bugs fixed


Added on November 28, 2013


  • support Android 4.4 (KitKat)
  • fixed: “Delay to enable” does not work when backlist option is enabled
  • fixed: cannot select “no icon” battery icon theme for small screen devices
  • bugs fixed



Added on February 14, 2014


  • new resizable quick settings widget (1×1 ~ NxN). Only available on Android 4.1 or greater devices
  • quick settings notification: show more buttons per row
  • show 2x notification icon on top of list by default
  • new “Also toggle Auto-sync” option. If it’s checked, 2x also turns on/off system’s “Auto-sync” option when it manages the Internet connection
  • show selected sound name for related settings
  • German/Hungarian localization
  • bugs fixed


Added on February 20, 2014


  • fixed crash bug when editing quick setting buttons
  • bugs fixed


Added on March 13, 2014


  • newly designed window theme. A new “Window background” setting is also provided
  • quick settings widget: also enable you to change the icon color
  • newly designed color picker dialog
  • improved the accuracy of “Auto screen off” function
  • fixed: quick settings widget related bugs when you rotate the device
  • fixed: preview widget looks too small on high resolution devices
  • bugs fixed


Added on March 17, 2014


  • new “Also check ambient light” option (Settings > Utilities > Auto screen off). Unchecked by default
  • change the default of “Stop when Wi-Fi on” option to unchecked
  • bugs fixed


Added on April 3, 2014


  • you can now specify different screen filter for either day or night mode
  • show daily screen/connection/battery summary report
  • new black theme
  • fixed: show incorrect battery curve when device is power off
  • fixed: battery curve does not show Wi-Fi connection status when Wi-Fi is active and “Manage Wi-Fi connection” option is unchecked
  • bugs fixed


Added on May 14, 2014


  •  fixed crash error when adding 1×1 battery widget on Android 4.1 devices</li>
  •  SmartWatch 2 widget: new 1×1 battery level and 1×1 remaining time widgets. You can add them onto the watch face
  •  SmartWatch 2 app: swipe left/right to toggle the low power mode
  •  enable you to toggle “Enable app” option from SmartWatch’s setting window
  •  new manual about SmartWatch 2. You can find it by going to: Settings > About > Description > Sony SmartWatch Description
  •  bugs fixed


Added on June 27, 2014


  •  further reduce 2 Battery used battery power
  •  improve the accuracy of battery remaining time
  •  battery history window shows up to 7 days battery curve
  •  user guide pages support TalkBack function
  •  screen filter supports KitKat
  •  Arabic localization
  •  fixed: notification shows too many quick setting buttons per row on 7″+ tablets
  •  fixed: should not show 20h as 1d for 1×1 battery widget
  •  SmartWatch 2: fixed widget will disappear problem
  •  bugs fixed and optimizations


Added on August 1, 2014


  • refined UI for showing the battery information
  • new settings for you to specify the screen on/off sound
  • notification always shows battery voltage, temperature, etc. information. Android 4+ devices only
  • don’t show remaining time when charging
  • added battery information widget usage to Widget Description page
  • bugs fixed and optimizations


Added on September 17, 2014


  • new battery icon add-ons which provide you more battery icon themes. Android 4.1+ only
  • all built-in battery icon themes are free
  • new high/low temperature notification
  • customize colors of the battery icon notification
  • battery history window shows grid line and battery level text, add a color legend icon
  • support GPS quick settings switcher for Android 4.2
  • fixed: not auto deactivate the auto screen off function when you manually disable app
  • fixed crash errors on Android 3.x


Added on September 29, 2014


  • apply background tinting to system’s status bar on Android 4.4+ devices
  • bugs fixed and optimizations


Added on October 8, 2014


  • new “Root access” setting. Turn on this option will enable 2 Battery to toggle airplane mode or GPS option on rooted devices
  • only require root permission when “Root access” option is checked
  • don’t request root permission when sending the app log
  • battery notification shows “charging” when device is charging
  • add a Notification shortcut to the side menu
  • new “All running apps” menu option
  • fixed: don’t tint the status bar when it’s hidden
  • bugs fixed and optimizations


Added on November 28, 2014


  • support Android 5 (Lollipop)
  • fixed: ringer mode quick setting switcher does not work on Android 5
  • toggling mobile data won’t work on Android 5 due to the system limitation. We can still help to toggle Wi-Fi or use screen filter for saving the battery
  • fixed: should not enable Notification > Background/Text color options on Android 3.2 or below
  • fixed: battery use window’s legend color view does not display correctly on Android 2
  • bugs fixed and optimizations


Added on December 23, 2014


  • fixed: cannot see the menu text on Android 5 when using the light theme
  • bugs fixed and optimizations


Added on December 30, 2014


  • new “Sensitive notification” setting which enables you to hide battery icon notification from a secure lockscreen. This option is only available for for Android 5+
  • update Hungarian strings
  • bugs fixed and optimizations


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