I have the original Nexus 7 , about 18 months old . It doesn't seem to hold it's charge very well , can easily go from 100% to 50 % overnight without being used and WIfi switched off .The new model would go from around 100% to 95% in the same time period .Can I condition the battery or is it on it's way out and if so can I send it for replacement ?

I also have the Nexus 7 2012 and its also about 18 months old. Battery on mine used to last nearly 3 days with medium use before it went down to about 20%. Now with medium use it can go down to about 40% battery in just over a day. I always turn my Nexus 7 off overnight while im in bed.

Darren

I put my nexus 7 on aeroplane mode when I'm not using it. Seems to save some battery life.

Since the kitkat update my nexus 7 eats battery life yet the Sony z1 is lasting longer and longer
Go figure