After 6 months of predictable battery performance my N7 (2013) suddenly requires more frequent charging. I see that apps at start-up are as expected; app power usage seems normal;  Wifi, gps, bluetooth are off when nor required, and usage are as they always have been.   Battery discharge is noticeably faster than before.

Also, full  start-up (from power-off) seems slower.

Perhaps there is something running in the background that I cannot see, or there is wake-lock activity. Is there a tool or procedure that can determine this? (My Nexus in NOT rooted).  Perhaps the battery itself has degraded over time

Any suggestions on how to track this down?

Finally received KitKat and (with some trepidation, in view of the many problem reports) installed it on N7 (2013) and N7 (2012).  Sort of a "ho-hum" experience.  Not much visible difference.  Some icon and color changes.  Perhaps the real changes are "under the hood".  Did not experience any of the horror stories reported on the Android sites.  Startup (cold start) seems a bit slower but case-magnet sleep and wake-up appears to now work reliably.  (In 4.3 this function required that wifi be "on" in order to wake).  All of my apps seem to work as before.

Please (continue to ) share your 4.4 experiences.  What's different; what works (better); what does not?

Just checked Chrome on my Nexus 7 (2013) and I found that I have dozens of open tabs. Not sure how I accumulated all of these but I'd like to close them without x-ing out each one individually. Could not find an option for this. Seems absurd. Is there an easy way to "close all tabs"?

Just received a new case (Poetic Slimline) for N7(2013). The case contains an instant sleep-wake feature when cover is closed-open. Very convenient feature, but works reliably only if wifi is enabled upon sleep ??  Anyone know what "wifi-on" has to do with any of this?.

Nice to see that N7 and wifi can hibernate with no appreciable battery discharge (lost 1-2% charge during 12 hour hibernate).

Any thoughts on the sound quality from the N7 built-in stereo speakers, when playing music.

Any recommendations on (Play) equalizer settings to get the best sound from these speakers?

I'm planning to place a large number of folders (perhaps 50, containing about 700 songs, with a total size of about 1GB) in the "Music" folder of my Nexus 7 (JellyBean 4.3.3).  Is there a limit on number of folders or size that the "Music" folder can hold? 

Would like a simple app that can stream a few of my favorite podcasts to my N7.2 and let me store some of them for playback when internet unavailable.

Any recommendations?