Ever since I got my nexus 7, it has had terrible battery life. At 60% brightness with GPS, Bluetooth, NFC and everything else turned off I get around 2 hours of battery life just browsing the internet. It's on 4.2.1 which I believe was supposed fixed the battery issues? If anyone has suggestions for what is wrong, I would greatly appreciate the feedback. Thank you.
My usage and settings:
-25% manual brightness
-GPS off
-Bluetooth off
-WiFi is turned on and off when browsing and going offline
-1 min Display sleep
The following stats are from CONTINUOUS USAGE WITH VERY LITTLE STANDBY:
7.5 to 8 hours of battery life = No games, Firefox Beta + Flash, MX Player, Piano Perfect, Google Play, Youtube
6 to 7 hours of battery life = An hour of gaming and normal use of everything else
5 to 6 hours of battery life = Two hours of gaming and normal use of everything else
One day I played Mini Motor Racing (full 3D game) for 2.5 hours from a full charge and was at 44% by the end of it (continuous). I then watched 4 hours of videos on MX Player (throughout the day) and was at 14%, which should have been able to give me maybe about another hour of video play time. 7.5 hours total.
Gaming eats battery life more than anything else. Judging by my gaming session above, I'd only get about 4.5 hours total had I continued playing. Watching videos, on the other hand, takes very little battery life with professional reviewers getting close to 10 hours.
Browsing on the other hand can give deceptive battery usage results. It depends entirely on what you're browsing for and what kind of sites you're going on. Flash sites or sites with heavy imagery will drain the battery faster than text based sites. I would also suspect browsing drains the battery more than some apps because you're constantly reading and writing the flash memory (professional reviewers again getting about 7.5 hours).
All that said, I use mine at 25% manual brightness and not 60%. I don't see anything wrong with your battery life judging from your usage.
Edit: I'll try 60% manual brightness and see how long it lasts. I'll post back results, which probably won't be surprising.