I have been using juice defender plus for a couple days now and it has almost doubled my battery life. I'm sold on this. I have it checking for wifi every half hour and updating my email and accounts every hour. Set to turn off data for when I sleep, and it will still check for and make a data connection whenever I wake the phone and/or open an app that needs a data connection. Awesome. I also deleted news, stocks, friendstream, and stock weather apps and Widgets plus a few more. No need for an oversized battery now.