[HTC One X] vivek_bhoj:
Everyone of us want to maximize battery life of our HOX....

So here are some of the tips for that:

1. Use Android’s Built-in Battery Usage Screen:

There’s a screen built into Android that can tell you exactly what is draining your battery. Go to Settings –> Power –> Battery use to see what has been most of your battery.

You can use Battery Monitor Widget Pro to set alarms to know when charging completes and u can set maximum temperature for battery so that when battery reaches max temp u will get a sound notification.

https://play.google.com/store/apps/developer?id=3c

2. Adjust the Brightness of your phone:

Go to Settings –> Display & Gestures -> Brightness and you can choose Automatic Brightness which usually works fairly well, or you can just turn the brightness down to the lowest acceptable level.

You can also disable Animation & Auto Rotate Screen.

Set Sleep to lesser values like 15 seconds or 30 seconds

3. Disable Wi-Fi, Bluetooth & Mobile Network When You Don’t Need It:

Use Power Dashboard widget to quickly and easily turn on, off or adjust screen brightness, timeout, Wi-Fi and Auto-Sync

4. Disable Google's Location Service:

GPS drains a lot of battery so disable it.

Go to Settings –> Location -> uncheck them

5. Disable Apps that Sync Constantly:

Disable background data transfer as it consumes a lot of data or alternatively sync only essential apps that u need.

Apps like facebook, twitter, mails refresh themselves after a particular interval.

Go to Settings –> Accounts & Sync -> Turn it on or off

you can also change update frequency of apps

6. Disable Sound and Vibration:

Go to Settings -> Sound and then you can disable Dial pad touch tones, Touch Sound, Screen lock sound and vibrate feedback

Secondly Go to Settings ->Language & Keyboard -> HTC Sense Input Settings -> and then disable Sound feedback, vibration feedback and trace keyboard{ if you don't use this feature }

7. Use 2G Network as it drains lesser battery compared to 3G

If you are using internet on Wifi then disable 3G data as it drains more battery compared to Wifi

8. Use HTC's Inbuilt Task Manager to See Which Apps are running:

You can kill those apps which you normally don't use{ though irrelevant in android }

Check this link as to know why Task Killers are irrelevant in Android:

http://www.droid-life.com/2011/06/02/revisiting-android-task-killers-and-why-you-dont-need-one/

Check here to know more about Android Multitasking:

http://android-developers.blogspot.in/2010/04/multitasking-android-way.html

9. Don't use live wallpapers and disable Wallpaper Scrolling and use only those homescreen widgets that you require and you can delete additional homescreens that you don't require{ no need to use all 7 homescreens }

When you are at home, just tap on home button and you will get this screen where you can add or delete homescreens:

10. Use Titanium Backup's{ Paid } Freezing Function:

It prevents the apps from running without uninstalling them and frozen apps are not shown in App Drawer and cannot be launched. {You can defrost if you want}

https://play.google.com/store/apps/details?id=com.keramidas.TitaniumBackup

11. Use custom kernels that support underclocking to:

Reduce processor speed { Underclock } and either choose interactive, ondemand or other governors as it also reduces temperature.

Use app SetCPU for Root Users to set processor speed and governors.

https://play.google.com/store/apps/details?id=com.mhuang.overclocking

Alternatively you also use System Tuner App for this purpose, is free:

https://play.google.com/store/apps/details?id=ccc71.pmw.pro

12. You can use a battery saver app like Easy Battery Saver:

https://play.google.com/store/apps/details?id=com.easy.battery.saver

You can select any of the following modes as per your needs:

13. Use ROM CLeaner Script by Patrics83:

If you are on Sense ROM than you can remove a lot of bloatware from HTC including Rosie Launcher.

http://xdaforums.com/showthread.php?t=1589949

14. Check this link to know more about our HOX's Li-Po Battery:

http://batteryuniversity.com/learn/article/the_li_polymer_battery_substance_or_hype

I hope that you find these tips helpful and have any questions please feel free to ask, I'll try to help you if I can.