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Android Battery Life


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#46 Detection

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  • Joined: 30-October 10
  • Location: UK
  • OS: 7 SP1 x64

Posted 18 December 2012 - 19:29

Haha, my computer is running just fine. It's perfectly normal. Granted I do have a couple of large apps in memory (Lotus Notes, ugh), but aside from that it's just fine. That's how it's supposed to run just the same as every other modern OS. As a friend of mine said, sometimes people just shouldn't see numbers because a lot of times they don't understand them. A small amount of free memory tells me my machine is efficiently using my RAM and not wasting it. As you can see with the "Available" number, there is a plentiful amount of RAM available to be cleared if something needs it. And the number of cpu cycles it takes to knock something old out of cache is nearly nothing, so no, I don't think it would be noticeably faster if the memory wasn't in use before.

Some services start with Windows just like the services that start at boot on Android. The services that task killers kill, and the services that start themselves right back up after being killed, wasting cpu cycles and battery. If you use a task killer and selectively went through and excluded every service so that you wouldn't have wasteful recycling of those services whenever you killed tasks, it wouldn't be as bad, but it still wouldn't be necessary. Android and Windows are not the same thing. Android, and all other mobile platforms, keep applications in memory after you close them because the UI is nearly always a single window UI. You can't multitask and leave multiple applications open like you can on a PC. It's the equivalent of minimizing an app on Windows, however, mobile apps are specifically built to save their state if necessary and be ready to be killed whenever memory is needed.



Well I've been running and repairing windows machines for years and years and the only time I see 99% RAM use is either when they have a malware infection or a shed load of high RAM use programs/games open

What is using all of your RAM? Look in processes and click the RAM column to move highest to top


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#47 Joshie

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  • Joined: 01-March 02
  • Location: Seattle, WA

Posted 18 December 2012 - 19:42

The important thing to remember is that anyone who recommends installing an application to improve battery life by managing memory/CPU is wrong >95% of the time. There's little to no evidence that third party battery savers make any real impact, and many of them are so detrimental to user experience that any increase in battery life at all will be at the expense of your enjoyment of the device.

Not to mention the risk of the Windows Effect: whatever crap is caused by third party tools is blamed on the OS instead.

Like security, your best shot at keeping your battery life at its best is getting to know your device and developing good habits.

My own personal Android tip: for the love of all things holy, disable automatic brightness in favor of a notification bar control, be it a toggle, slider, or the status bar swipe feature of CM. If nothing else, put a widget somewhere. Why automatic brightness is on by default for practically every Android device is beyond me--it isn't even an enjoyable feature if it worked.

#48 Detection

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    Detecting stuff...

  • Joined: 30-October 10
  • Location: UK
  • OS: 7 SP1 x64

Posted 18 December 2012 - 19:46

The important thing to remember is that anyone who recommends installing an application to improve battery life by managing memory/CPU is wrong >95% of the time. There's little to no evidence that third party battery savers make any real impact, and many of them are so detrimental to user experience that any increase in battery life at all will be at the expense of your enjoyment of the device.

Not to mention the risk of the Windows Effect: whatever crap is caused by third party tools is blamed on the OS instead.

Like security, your best shot at keeping your battery life at its best is getting to know your device and developing good habits.


Yea I don't think task killers help with battery, just with Androids poor memory management (Prior to JellyBean)

And I'm not ruling out badly coded apps being the problem a lot of the time too

Same with Firefox, poor browser gets a load of grief because of buggy addons

#49 dnast

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  • Joined: 07-January 02
  • Location: Location Location

Posted 19 December 2012 - 01:24

^ Yeah, I've had to use task killers in the past when I've had a phone/ROM that would randomly slow down to a crawl at times. I'd do the task-killing manually, though. I wouldn't recommend it for saving power.

Like you mentioned earlier, I've also seen a few games (quite a while ago) that weren't running as services, but would show up in my "Running Apps" list soon after a reboot. I never figured out why that was happening so I just uninstalled them.