I have had the battery since late December 2015.
Today is Sunday, May 14, 2017, and it has been over 1 year and 5 months of operation until it broke and needed replacement.
One could say that I abuse it.
Since I use GPS at least 2 times a day, Bluetooth at least 3-4 times, it is constantly connected to the internet and my home, work, and school WiFi.
Every day I use applications such as Microsoft Word, Excel, PowerPoint, Acrobat Reader, social networks like Facebook, Messenger, Instagram, Skype, WhatsApp, Viber, and games like Asphalt 7 - 8 - OverDrive and Xtreme.
The battery lasted up to 5-6 hours.
If I didn't do any of the above and had it set to "Battery Saver Mode" from the beginning, it would last up to 12 hours.