So recently I was disappointed in my Android's (Moto X Gen 1) battery life. With moderate use, I would routinely be close to having no battery left after around 8. Heavy use, of course, could easily get that down to 1 or 2 hours. While using my Android tablet (Samsung Galaxy Tab 2 7) I realized that my Hotmail account (it was my first web account and I use it mainly for anything requiring an email address online, a junk email address if you will) was syncing within a couple of minutes of me clearing the notification. I then realized: Gmail mail.com Yahoo mail Hotmail Work email All of these were set to very low sync rates (every minute or less even!). Most of us juggle multiple email addresses these days, so most of you can relate. I decided to do an experiment. I set the sync rates on my various email accounts to every hour. Then watched the resting battery consumption of my devices. Both the phone and tablet saw markedly improved battery life! My phone could now go 12 hours or more with moderate usage. The tablet showed a similar 30-35% increase in battery life with moderate use. Heavy use wasn't impacted much if at all with these changes. Obviously each email address and user is different. But changing the sync rate to a more moderate setting, especially when using 3 or more different email accounts, can greatly benefit you when it comes to battery life.