What are the things which reduces (Android) battery time?

Question

In one of our application we need to use the GPS continuesly ,the purpose is to get the user driving speed. Recently I found that while using the GPS continuesl

Answer 1

Anything that is CPU intense. Each cpu cycle drains more battery life. So programs that run in the background, or anything that needs constant updating (GPS) are going to drain battery life.

Answer 2

Well i found the answer here, Google I/O 2009 - Coding for Life -- Battery Life, That Is

What can I do to increase battery life on my Android device?

Answer 3

Wifi, Facebook Client, Application which runs lot of services in background. Gaming apps may drain your battery.