I’m a new Android user, I’ve the Xperia X10 mini pro, and like almost all Android users I’m a little bit concerned about battery life.

A friend of mine usually tells me that I should not be concerned about that, as one usually have easy access to a usb port or to a power outlet. Well that is really a good point I’m still concerned about battery life in my Xperia mini pro.

I’ve installed juice defender, (the ultimate [paid] version), and configured it to connect using the wifi first and the 3G if there is no wifi available.

OK, it also have another option, which wifi location, this feature, remembers where wifi is available (using the GSM location of your phone) and only turn the wifi on, when it is near the point it “remembers” wifi is.

For this to work you need to “train” your phone, by manually enabling wifi, at locations where it is available, after two or three times it is suppose to remember it, but that is not working for me. And yes I have enabled location services in my Android settings.

I’ve also installed Y5 battery saver, which does only the job location feature of Juice defender is supposed to do, but it seems to be working now.

I have configured Juice Defender to give priority to wifi, it means, try first to connect via wifi and only if it is not available try 3G data, I think Y5 battery saver should block the wifi where it remembers is not available, and only let Juice Defender enable it where it is available.

I’m still testing it, and will let you know the results of my tests in future posts.

Update 04/02/2011: You may want to read Saving Android battery with Tasker. That gave me better results than Juice Defender.