What is the best android cell phone battery enhancer?

I have a nexus s 4G from Sprint. Its an android. I wanna know how to prolong the battery life. The best battery life enhancer.What is the best android cell phone battery enhancer?
I am a sales rep for a wireless company. This will be kind of long, but this is exactly what you need to do, and it will work...



Okay first check some things out first. In your location and security settings do you have any My Location check marked? This is the number one battery drainer. When you have this turned on, your cell phone is always putting out signal for gps, or wireless towers to show location. Unless you are using gps or searching for a nearby store, this is pretty much useless and wastes battery. Next I would use an app called Advanced Task killer. This app will close apps that you accidentally left open. When you download it go to settings (by pressing menu button) and having it auto kill ever 30 or so minutes. Now you need to make sure what you have check marked on advanced task killer, because it will kill all apps that are checked. MAKE SURE THE PROGRAM ITSELF IS NOT CHECKED! You want to go ahead and check everything for right now and press kill. Now all those selected apps will be removed, BUT WAIT. Don't leave the application yet. Wait about 4-5 minutes and go in and out of the app from home screen back to the application at least once. You will see that you have some apps that popped back up. Un-Check all of those apps! These are apps that will reboot themselves in order for the phone to function properly, and by killing them you're just causing a battery draining loop.



This alone will double your battery life. I do this for my customers every day and they always say it works.What is the best android cell phone battery enhancer?
These phones are long lived already! I have a Nexus one - and Nexus S, and I can say the battery life is a lot better! Ure next option is a Seiko extended battery, but it will ruin the with of that sexy phone.