Newer smartphones are more power hungry than ever before, and the Samsung Galaxy Note 2 has a mighty appetite for amps that only Jenny Craig could possibly curb. On average, your Note 2 (or other Android device) lasts for what, a day, maybe two days before dying. Mine barely lasts 8 hours! This is thanks to all of the apps running in the background of your phone, even when you're not using them, eating through all of your CPU, leaving nothing but crumbs.
Even if your Android device is resting, things like Wi-Fi, 3G, Facebook, Instagram, and other apps continue to run, draining your phone... more