Battery went from 80% to 0%

Discussion in 'Android General Discussions' started by anewday, Mar 22, 2010.

  1. anewday
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    anewday New Member

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    I went to bed around 1am. When I woke up at 8am, the phone was off. So then I tried to power it on but there were enough power. The phone still has at least 80% of battery before I put it to sleep while I was in bed. I wonder what could've drained it so fast. I mean the phone works fine for weeks before this, it's not a battery issue afaik since it could easily last days on standby.

    Anyone else experienced this? Is this a bug or what?
  2. aminaked
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    aminaked New Member

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    Usually some app that's gone psycho and can't stop running. Go to phone settings > About phone > Battery use to determine what's sucking the most juice. Usually "Display" is the biggest thing. What else is high on your list?
  3. bomber889
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    bomber889 New Member

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    Is there some syncing bug? Cause that also drains a lot of power.
  4. crspang
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    crspang New Member

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    Did you happen to leave the browser active with Google as the home page? That'll keep GPS active.
  5. anewday
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    anewday New Member

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    Voice calls 27%
    Cell standby 10%
    Phone idle 8%

    I have gps, bluebooth, and wifi disabled. I suspect it could be due to synching.
  6. aminaked
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    aminaked New Member

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    Are you sure? Mine just uses GPS while "acquiring position" but then it stops using GPS when it's done.

    Anyway, any number of apps could cause the battery to drain. Anything that uses GPS uses up the battery quickly.
  7. anewday
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    anewday New Member

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    Xscope is still running even though I exited the app. Is this normal?
  8. bomber889
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    bomber889 New Member

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    Yes that is normal. Many apps run in the background even after they are closed.
  9. aminaked
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    aminaked New Member

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    Hm, I think that if synching was the problem then your list would include "Gmail", "Calendar", or "Contacts". What makes you think that synching is the issue?

    If you go to phone settings > Accounts & sync and choose each of your accounts (if you have more than one) under "Manage accounts" you will see checkboxes for each google service...contacts, calendar, gmail. Is there a synch icon next to any one of those?
  10. anewday
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    anewday New Member

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    There is no sync icon next to any of those.
  11. aminaked
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    aminaked New Member

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    Perhaps the suspected sync problem cleared up on it's own.
  12. bomber889
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    bomber889 New Member

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    If you have none of the problems listed above, maybe you have a defective battery?
  13. anewday
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    anewday New Member

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    Doubt it, everything is fine after I recharged the phone.
  14. titans
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    titans Premium Member Rescue Squad Premium Member

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    Anewday, it seems that you don't know what a Task Manager/killer is. There are some free on the market, I'd highly suggest downloading one of them. You can choose to kill apps running in the background, thus saving you memory and sometimes battery too.
  15. bomber889
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    bomber889 New Member

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    It was proven that an app killer/manager is not needed
  16. billyidle
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    billyidle New Member

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    Android automatically kills tasks for you. 3rd party task killers are not going to help save battery in this situation.
  17. titans
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    titans Premium Member Rescue Squad Premium Member

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    Completely false. Open up your web browser, navigate to a page which isn't your home page, press home to exit the browser. Click on the browser icon again, the same page shows up, because the task was never killed.
  18. ViciousCircle
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    ViciousCircle Android Addict Premium Member

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    Not false, just that it doesn't kill processes right away. The OS's built in task manager kills processes depending on several factors and the processes 'rank' depending on what it is doing and the amount of free memory. Here's a good read on how the built in memory manager works (and when it kills tasks).

    How to configure Android's *internal* taskkiller - xda-developers
  19. hookbill
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    hookbill Premium Member Premium Member

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    Going for 80% to 0 is a bug and it's not a true reading of the battery. This been discussed many times.

    If you reset your device the battery should jump right back to where it should be, or if you put it on a charger you will see it fully charged within 10 minutes.

    This bug doesn't occur frequently. I've had it happen only one time but just about everybody gets it at least once.
  20. MacGyverS2000
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    MacGyverS2000 New Member

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    See the recent battery thread... it has happened to me twice now in less than a month.
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