Battery usage

You can install task killer programs such as Advanced Task Manager, Super Task killer or Battery Doctor etc see Play World. Generally if a program is not using much power or memory one can allow the operating system to take care of these chores.


From my N7 or BBPB or HPTP or HP Laptop
 
So by installing one of those programs it will tell me what apps are continually running in the background?
 
Decided to share my experience with the battery drain.
I got my Nexus 7 about a month ago. At that time in average battery drain was about 11-12% per day (24 Hrs) in sleeping mode (I didn't keep it idle for 24 Hrs, but easy to calculate it after a night sleep). It wasn't great (not the promised 300 Hrs, but acceptable).
Then I installed some applications, accounts, etc. The daily drain in sleep mode raised to 16-17%. Not great.
After installing Skype (it runs even if you try to exit it, until you kill it as a process) the train increased to 24%!!! Which was totally unacceptable.
Switching off Wi-Fi, GPS didn't help. Even when sleeping Wi-Fi still was ON (in spite of the option to shut it of when sleeping) - I had solid bar in the battery chart.
I started searching forums (especially this one) and decided to follow some advises.

After disabling all possible Google services (like Books, Movies, Magazines, Current, etc.), deleting weather widget, switching off location reporting in Maps, disabling all possible syncs and notifications I've got 4% battery drain per day (24 Hrs)!
Now I use the battery, but not some Google apps.

Well, it's time to switch ON some notifications or services which I really need, but the bottom line is this - it's achievable to significantly reduce the battery drain. I think the main culprits were Google services (Magazines, movies, etc., which I anyway replaced with another apps I liked more).

Hope it will help someone.
 
I'm stalled advanced task manager and it shows that everything is running in the background. The time just keeps going up by seconds on all of my apps. So what do I do to stop the apps from running in the background? Can't I just run them when I want them and then turn them off again? If so how do I do that? Thank you
 
Try free apps Battery Doctor, Gauge Battery and Battery Graph to help you manage and track your battery use. Others may recommend similar apps because Google Play has quite a few

from a BB Playbook or HP Touchpad or N7
 
But how do I know what apps it is OK to stop. Does anyone have a list of apps that should NOT be stopped? In Settings-apps-running I see a long list with "1 process, 1 service." I don't know which of these are necessary. Thanks in advance for any suggestions.
 
I find that a lot of apps just do crazy things in the background, and consume network usage and battery. Most apps you don't really need, as you can get the content via a web browser, e.g., Facebook, Google+, Twitter, etc. I don't need these things running constantly, so I choose not to install them.
 
If you will try Battery Doctor and go the saving bar you can find out which apps are considered to be power hogs and decide whether to terminate. There other settings which you can explore. If you go to battery in the device settings and press on the discharge curve you will find a list of where your power is going. You shut down the worst offenders or at least go to each and find if there are setting changes you can make like reducing frequency of notification or shutting off GPS or nfc. It is often best to just let Android run without too much interference. Usually the best way to conserve your battery is to keep the screen brightness low and shut it off when not using it. Airplane mode is also good particularly when moving from place to place.

from a BB Playbook or HP Touchpad or N7
 
Google wont let you stop the core apps that actually run the tablet. If you stop every app/process you can and just use your tablet like you normally would do you should be okay.

Like the user posted above, the normal battery drain should be around 75% screen on time when you view the battery history. Once you start adding live wallpapers, widgets and apps that are constantly checking for new messages things can go down hill very fast.

I suggest if your using apps like FB,twitter, etc that are always running in the background go in these apps and change the time it takes for them to check for new messages and status updates. The longer the better but changing them to manually checking would provide the best battery life, but not the greatest user experience.