Support 72 Hours of Battery Life!

Discussion in 'Android Devices' started by Xenon, Mar 8, 2010.

  1. Xenon

    Xenon Well-Known Member
    36

    Aug 30, 2009
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    Croatia
    I know, I know, it has been achieved before, but this is my first.
    I used to get up to two, two and a half days (48-60 hours)
    but today for the first time I pulled 72 straight. The phone
    still reports 22% charged and 3685 mV, but I think that there's
    no way it can last another 18 hours.

    The phone was charged on the wall socket (people report
    that it charges better than the USB cable).

    It was used in my normal pattern, sans listening to music (which
    I do while I commute and I don't commute on weekends). This
    probably explains the extra longevity.

    Firmware IL3, no extra battery draining apps installed.
     

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  2. informale

    informale Well-Known Member
    68

    Oct 25, 2009
    704
    33
    68
    Scotland
    Are we supposed to guess what your normal pattern is? ;)
     
  3. joyzhangxu

    joyzhangxu Member
    5

    Mar 3, 2010
    6
    0
    5
    china
    the best record is 2 days in my phone

    firmware ja1
     
  4. unchai

    unchai New Member
    5

    Jan 8, 2010
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    mine 24Hour+ I7500XXJB2
    [​IMG]
    3G on, normal usage with Internet surfing totally about 1 hour, keep auto-check IMAP4 email by every 15 mins, about 10 calls totally 30-45mins.
     
  5. Xenon

    Xenon Well-Known Member
    36

    Aug 30, 2009
    243
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    36
    Croatia
    I do appologize.

    2G on, data synching on (mail, contacts, everything), about 5-10
    short calls per day and the same number of SMS. I read the mail
    that arrived and very rarely surf a bit (half an hour, just to
    check something when away from computer). That's it. On
    workdays also listen to music for about 45 minutes.
     
  6. mvnjpy

    mvnjpy Well-Known Member
    26

    Dec 5, 2009
    59
    1
    26
    wow reeally..??
    i doubt mine would last a day with data sync on..
     
  7. KlaymenDK

    KlaymenDK Well-Known Member
    143

    May 29, 2009
    1,217
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    Denmark
    This may be a daft question and I'm just blind, but...

    Can I see "Time since last unplugged" somewhere? The screenshot above shows "Time since boot", but I rarely reboot my phone (IMO, one shouldn't have to reboot anything if it's designed well).
     
  8. settings -> about phone -> battery use (look at the title bar)

    mine's at 2d 6h 5m and 62% charge left - running jb2 (extremely low usage, tho' with sync always on) :)
     
  9. KlaymenDK

    KlaymenDK Well-Known Member
    143

    May 29, 2009
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    "Settings -> About phone -> Status -> Battery status" tells me if it's charging or not. There's also an entry for "Uptime". But I don't see "Battery Use", neither in "About phone" nor anywhere else.

    I'm on L3 build of Android v1.5.
     
  10. guess it's a donut thing

    anyway, i'm pretty sure spare parts could give you that info
     
  11. 5d 7h 32m 12s since unplugged - 4% battery left :)
     
  12. Xenon

    Xenon Well-Known Member
    36

    Aug 30, 2009
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    Croatia
    As far as I know you have to calculate time since last unplugged
    yourself.

    *#*#INFO#*#*

    Then use one of the figures, for example if it says "screen on 10%"
    and "10 hours" it means that the phone was last unplugged 100 hours
    ago.
     
  13. Xenon

    Xenon Well-Known Member
    36

    Aug 30, 2009
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    36
    Croatia
    Did you use the phone at all during this time?
     
  14. very low usage - a few short phone calls, a few sms, a few mails, a gtalk notification or two; some market browsing (on 3g on occasion), updating apps, installing a couple of new ones
    syncing always on for everything
     
  15. KlaymenDK

    KlaymenDK Well-Known Member
    143

    May 29, 2009
    1,217
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    :eek: I can't believe your figures.

    With very light usage*, I get perhaps 30 hours -- max. These last few cycles have been about 8(!) hours, so right now I'm doing a full, powered-off, recharge, a deep discharge and another full recharge. Let's hope it's better. Oh yeah, and Android says I've got almost a full charge, while Battery Left says an hour and a half -- and is usually right. Gah. [Edit: and yes, this is with minimal apps running; wifi+sync 1hr/day (scheduled) rarely GPS and never any Bluetooth; and only two widgets (Battery Left and Calendar). I've checked, and Battery Left is NOT what's sucking the life force out of my phone.]

    * I usually send 1 sms per day, talk 5 mins per day, and use the calendar and misc PIM apps for a combined total of less than an hour. All this while %$#$%&% because the phone is so gorram slooow, taking several seconds to load up today's calendar, or at least a second to show the contacts list! :mad: I sometimes (who am I kidding, I mean 'often') curse my decision to buy into this thing instead of sticking to my Palm.

    Sorry, just had to let off a bit of steam. :(
     
  16. maybe you get bad reception so your tx is always at full blast?

    btw, i did get the no sleep issue a couple of times (in which case the battery was dead in a matter of hours) when i started using jb2, but it hasn't reared its ugly head in a long while
     
  17. zstef

    zstef Active Member
    16

    Mar 1, 2010
    37
    4
    16
    Croatia
    Well I'm pretty happy with JB2 FW for now... after 120 hrs of light usage (3g, 2g, wi-fi and gps most of the time turned off) I still have 60% of battery left.
    I also do not have the notorious "no-sleep" issue ("Running = 1.5%", "Screen On = 1%").
    But things could even be better if Samsung manages to develop a FW that wouldn't be so demanding while 3g/wi-fi is turned on. There are so many entries in radio log at that time which tells me that the phone practically isn't sleeping at all.
     
  18. KlaymenDK

    KlaymenDK Well-Known Member
    143

    May 29, 2009
    1,217
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    Denmark
    Hum, that might well be the case (in which case any firmware won't help). I must use 3G (my provider has no 2G coverage), and during the major part of my daily whereabouts I get no more than two "pieces of liquorice" (as we say here in Denmark).
    Thanks for the insight.
     
  19. informale

    informale Well-Known Member
    68

    Oct 25, 2009
    704
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    68
    Scotland
    Approx. 2 days ago my Gmail sync slowed down to approx. once per hour. That indeed had incredible effect on battery life, but it is damn weird! Before I had email updates on the phone more frequent that Google Talk for Windows checks for new emails.

    How often does GMail update with auto sync on on your phones, guys?
     
  20. Mr.DNA

    Mr.DNA Well-Known Member
    36

    Jul 29, 2009
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    Mine updates quickly as you described, often before the browser-based gmail on my desktop is updated.
     
  21. doesn't it use push?
     
  22. that alone has a massive effect on battery life

    *edit* whoopsie, double post
     
  23. Mr.DNA

    Mr.DNA Well-Known Member
    36

    Jul 29, 2009
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    Are you using setCPU or any similar app?
     
  24. no (it'd need root, right?)

    also no task killer apps, task management is handled like god google intended
     
  25. Riksu8

    Riksu8 Member
    25

    Feb 5, 2010
    14
    0
    25
    Finland
    All I have to say is - wow. I can manage 24-36 hrs with the Donut firmware, and I don't usually do more than send a dozen texts with Handcent SMS per day, one or two phone calls (max. 10 min) and some random Market usage. I have K-9 checking four inboxes though, so I guess that's my battery eater?

    I don't have background data on (except when I use the Market) so no syncing either. I have GPS and WiFi locators on because I heard that they don't use up battery until an application needs my location. Screen brightness is as low as it'll go and I don't use the pouch. Am I missing some obvious battery eating setting here? I'm really getting frustrated 'cause I don't want to sacrifice performance for battery life but right now I don't have a choice.

    </whine>
     

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