User Tricks #1: Increase Battery Life

Here are 9 easy tricks that you can use to get the most juice out of your Android battery. 

Increasing Battery Life

1. Under-clock your cpu(for root users only). Download->over clocking widget->set cpu speed to lowest value
2. Turn off GPS
3. Reduce the number of start up apps 
4. Restart phone
5. Lower screen brightness
6. Turn off Wi-fi when you are not around any wifi networks
7. Turn off 3G Mobile Data Network - Settings--->Wireless Controls--->Mobile Networks and check the box that says "Use Only 2G Networks.
8. Disable auto Data Sync
9. Download and install "Power Manager"
10. Disable back ground apps - [~JDBDogg]
11. Turn off keyboard backlight (for Dream/G1 only for obvious reasons) with Backlight Off app. Only works on rooted phones. [~Chahk]
12. Turn off any unnecessary noises or vibrations, such as for on-screen keyboard and games. [~AdamPI]
13. Make sure your firmware and apps are up to date, efficiency may be improved. [~AdamPI]
14. Use headphones. [~AdamPI]
15. Turn off Bluetooth. [~AdamPI] 
16. [~Yours goes here].

Keep the list growing guys.