The Samsung Galaxy Note 2 N7100 comes with a 3,100 mAh battery, which offers it a pretty decent battery life, though it can always be improved if you know how to use it, charge it and set it up.
In this guide I am going to teach you increase your Galaxy Note 2′s battery life significantly by doing only some basic things that don’t require any advanced skills.
While the device comes with a huge battery, its hardware is very powerful and it can drain it quite fast, especially while being used intensively. Biggest battery drainers are the CPU, display and 3G/4G and considering that it has a 5.5-inch Super AMOLED display along with a 1.6Ghz quad-core processor, you need to be careful.
The Galaxy Note 2 also features GPRS, 3G, 4G, WiFi 802.11 a/b/g/n, Bluetooth 3.0, GPS, Glonass, and NFC, which also drain battery while active.