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  1. og1502's Avatar
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    #21  
    Quote Originally Posted by imop45 View Post
    Patch that might help you: Search for "Data in Device Menu" in Preware ,install it, and when you don't need data (like at work, etc) toggle to turn it off in the device menu.

    -This works great for me, as i go to school in a building that has thick walls and hardly any signal. I turn data off, i can still get phone calls, but my battery lasts about 19 times longer within 7 hours.
    Same strategy that I use. It really does improve battery life.

    As far as battery consumption with the Pre overclocked, well, when I was using the 800mhz one, it wasn't horrible. I switch to the 720mhz one because I think it's more of a happy medium between better performance and battery consumption.
  2. Daemon's Avatar
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    #22  
    I really think turning data off is pretty silly for a smart phone.
    If something is keeping the data radios active while the phone sleeps, figure
    out what it is and fix it, rather than turning all data services off.

    I have two polling email accounts (every 30 minutes), Wifi on, GPS off,
    in a Wifi environment most of the time, and with or without the 800Mhz
    patch, I can get 60 hours of standby time on the stock battery
    (tested again after installing 1.4.1.1 with no change). That' about 1.3%/hr
    drain in Battery Monitor.

    If I'm actively using the phone then battery drains in direct proportion to the
    level of activity and certain apps drain more than others. If you're
    highly active on an 800Mhz phone, then it'll drain the battery proportionally
    more. If you do only the same tasks as before, in less time, then it will not.

    ian
  3. kkacatin's Avatar
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    #23  
    Quote Originally Posted by Daemon View Post
    I really think turning data off is pretty silly for a smart phone.
    If something is keeping the data radios active while the phone sleeps, figure
    out what it is and fix it, rather than turning all data services off.

    I have two polling email accounts (every 30 minutes), Wifi on, GPS off,
    in a Wifi environment most of the time, and with or without the 800Mhz
    patch, I can get 60 hours of standby time on the stock battery
    (tested again after installing 1.4.1.1 with no change). That' about 1.3%/hr
    drain in Battery Monitor.

    If I'm actively using the phone then battery drains in direct proportion to the
    level of activity and certain apps drain more than others. If you're
    highly active on an 800Mhz phone, then it'll drain the battery proportionally
    more. If you do only the same tasks as before, in less time, then it will not.

    ian
    I agree. With 1.4.1.1 and the overclocking patches, I'm using my phone more often and I need more battery life. That's why I got Seido's 2600 mAh battery. Still doing it's initial 8 hour charge, but I love the feel of it when you type. The added thickness is a functional benefit even though it looks like a curvy brick.
  4. #24  
    Quote Originally Posted by Daemon View Post
    I really think turning data off is pretty silly for a smart phone.
    If something is keeping the data radios active while the phone sleeps, figure
    out what it is and fix it, rather than turning all data services off.

    I have two polling email accounts (every 30 minutes), Wifi on, GPS off,
    in a Wifi environment most of the time, and with or without the 800Mhz
    patch, I can get 60 hours of standby time on the stock battery
    (tested again after installing 1.4.1.1 with no change). That' about 1.3%/hr
    drain in Battery Monitor.

    If I'm actively using the phone then battery drains in direct proportion to the
    level of activity and certain apps drain more than others. If you're
    highly active on an 800Mhz phone, then it'll drain the battery proportionally
    more. If you do only the same tasks as before, in less time, then it will not.

    ian

    I don't think it's silly at all, i just got the patch, and am looking forward to using it.. I don't need data during school time (well unless i'm bored, or need to google something), but i don't want to put it on airplain mode, so im going to turn off data. I just want to know if someone sends me a text, or calls me.. (i don't text much, so when i get text, half the time it's important.. )
  5.    #25  
    Quote Originally Posted by imop45 View Post
    Go to the MSG app> Buddies > Make sure you're offline.

    Go to the Email App> Preferences & Accounts> Accounts > Sync (get email) every 2 hours or more if you can handle it.

    Go to Screen & Lock App> Turn screen brightness down.

    Go to Location App> Turn off GPS Background services -AND/OR- Turn off GPS completely if not in use.

    Patch that might help you: Search for "Data in Device Menu" in Preware ,install it, and when you don't need data (like at work, etc) toggle to turn it off in the device menu.

    imop--thanks. These are all standard/generic battery saving tips. After 1.4.1.1 I see my % indicator literally go down as I hold the phone. A 20 minute drive to work with no activity, had it go down by 5%. I have scaling on, which should help, but obviously something is not right. Or, as someone stated, I need to let this phone get used to 1.4.1.1 gently and gingerly.
  6. #26  
    Quote Originally Posted by hockey4life0099 View Post
    if you have facebook beta app that thing can drain battery. make sure you update that and have it check for notifications less
    I agree 100% The default is to check for notifications like every 5 minutes. It was going through my battery like water. I have since changed it to every 4 hours and battery life is back where it used to be.
  7. #27  
    When I'm not actually using the phone, the drain is around 1.2%, that's with push email and okay coverage. As soon as I actually do something though (particularly the web) the drain shoots out of this world. I'm talking 10-15% an hour! So, I may take the 720 off, the speed increase is not large enough that I actually need it with the massive drain.

    And I should note this is on the Seidio 2600, so it'd be double on a normal battery.
  8. #28  
    Quote Originally Posted by NABRIL15 View Post
    decided to leap to 1.4.1.1 yesterday, and I can't believe how quickly my battery drains. I am not using battery monitor or anything, but just looking at the % indicator go down very quickly.

    I installed the 800 kernel, and my permanent scaling script in etc/event.d to see if perhaps that calmed the battery usage down. I see that it still goes down quickly. Damn.

    Anyone else seeing their battery drop as fast as Palm stock?

    Thanks

    I'm curious why some are different then others. my battery is improved tremendously with 800 patch and 1.4.1.1 my phone I took off the charger last night at 1130 and played radio for an hour and slept next to me and still didn't charge it and now it has roughly 40% left
  9. Daemon's Avatar
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    #29  
    Quote Originally Posted by NABRIL15 View Post
    imop--thanks. These are all standard/generic battery saving tips. After 1.4.1.1 I see my % indicator literally go down as I hold the phone. A 20 minute drive to work with no activity, had it go down by 5%. I have scaling on, which should help, but obviously something is not right. Or, as someone stated, I need to let this phone get used to 1.4.1.1 gently and gingerly.
    A couple things for you and everyone else here.
    1. You cannot trust the battery % displayed in the UI. Due to the way
    the phone protects the battery from overcharging, the UI% may read
    100% for any real battery level between 94-100%. That means if
    it's displaying 100%, but is really 94%, and starts dropping a couple %,
    the UI% may appear to go down very quickly. Conversely if it's
    truly charged to 100%, the UI% can sit at 100% for a long time as the
    actual % goes down. And leaving it on the charger longer doesn't
    guarantee it'll ever be fully topped off. The battery protection logic lets
    it charge to 100%, then stops charging and drains to about 95% before
    it charging again, all the while the UI% shows 100%.
    If you want to know what your battery is really doing, use Battery Monitor
    app. I'll show UI% and actual % together. Or install the patch to
    display the actual battery %.

    2. Did some tests last night, and generally normal web/email/sms
    usage isn't too painful with the 800Mhz kernel because while it runs
    faster, any given task is finished sooner and it goes back to idling.
    Streaming of anything is dreadful though. YouTube vids, shoutcast
    style streaming apps and Pandora all burn significantly more juice
    than they do at 500Mhz. YouTube plays back buttery smooth but
    burns 450-550mA (around 25%/hr drain). Shoutcast apps like Radio
    Hibiki and others, burn 300+mA. Pandora normally takes 120-130mA at
    500Mhz is closer to 200mA running at 800Mhz
    patch. Basically their battery usage is scaling up proportionally to the
    increase in CPU speed because they run continuously.

    Even with scaling enabled, it does not appear to help with streaming.
    Watching time in state, shows it stuck at 800Mhz no matter what
    it streams.

    One trick I see is this. Here are the normal scaling commands for 500-800Mhz.
    Code:
    echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
    echo 500000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
    echo 11 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
    echo 1000000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
    echo 0 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/powersave_bias
    I've got that saved in a shell script that I run to enable scaling.

    If you want to do streaming then the best thing to do is kick the
    max_freq back down to 500 for a while by creating another shell script
    that looks like this.
    Code:
    echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    echo 500000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
    echo 500000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
    echo 11 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
    echo 1000000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
    echo 0 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/powersave_bias
    I verified that I can run that while it's streaming and it'll drop right
    down to 500Mhz and stay there which helps YouTube and
    Pandora drain a lot. . I need to do some more tests
    with the non-Pandora (they get to cheat and use a non-standard API
    call) audio streaming apps, because I'm finding the battery drain at 500Mhz
    to be higher than it was prior to 1.4.x. There might be a bug, but
    I need to revert the 800Mhz kernel to rule it out as the cause.


    ian
  10. Daemon's Avatar
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    #30  
    Quote Originally Posted by jonathanlc2005 View Post
    I'm curious why some are different then others. my battery is improved tremendously with 800 patch and 1.4.1.1 my phone I took off the charger last night at 1130 and played radio for an hour and slept next to me and still didn't charge it and now it has roughly 40% left
    I'd actually consider that pretty dreadful performance.
    I generally always take my Pre off the charger before I go to bed,
    stream Pandora or shoutcast station for an hour and then go to standby
    and at 10am the next morning it's never lower than 75%. If I don't
    stream anything it'll drop less than 10% overnight.

    ian
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