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  1. jaroslawk's Avatar
    43 Posts
    Global Posts
    45 Global Posts
    Usually I leave the office around 5pm with 80% of battery capacity left, but today (without change of usage patterns) it was down to 64% at 4pm, so I plugged Pre in to give it some more juice just in case.
    I suspect e-mail app going bananas: my Hotmail is set up to synch once a day, but I got notifications about something new in Hotmail inbox three times already!
  2. #22  
    my outlook keeps spinning.. not loading any new emails.. i've reloaded the account.. and it worked for like 2 emails and continues to spin.. makes phone hot and kills battery.

    i've removed and re-added.. it's eas and i've even restarted the exchange server, lol
  3. dwdesign's Avatar
    94 Posts
    Global Posts
    96 Global Posts
    I noticed significant increase in battery drain today too.

    Usually when I notice increased drain and a slight warmth to the Pre, it means a WebOS update is being downloaded in the background. Not the answer for today though.
  4. #24  
    more info...

    Running the 'cpu scaling script' below on startup
    Seidio 1350 mAh battery
    Data on
    WiFi off
    (3) mail accounts (2 EAS and 1 IMAP) set to get mail 'as items arrive'
    running 'Brightness Unlinked' app in dashboard 24/7 (display brightness 1 & keyboard brightness 100)
    Bluetooth off
    screen time-out set to 30 seconds
    32 various patches installed
    20 various packages

    On an average work day I get somewhere between 2.7% to 3.25% drain per hour. This is light to normal usage. I receive send 2-10 text messages, make 2-3 short few minutes phone calls, experiment for a few sporadic moments checking a few web sites or google/wiki searches, check for new apps or patches or updates et ctera. No long dedicated multimedia moments. If needed my phone can last me 24-33 hours fairly easily on a single 100% charge. This suits my needs.

    On an average day i am at work from 9am-6pm at my desk with my phone plugged into a USB port on my computer. Typically I go home after work and plug my phone into USB charger on my laptop. The only time I worry about battery is on weekends when i may spend 12 hours or more away from home (24 if i am lucky ;p). If i know i am going to be away longer, i bring a spare charged battery or charger.

    Below is the cpu scaling script that helps reduce the cpu speed as needed and reduces power consuption.

    start on stopped finish
    stop on runlevel [!2]

    console none

    echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    echo 600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
    echo 250000 > /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

    end script
  5. #25  
    When I first got the Pre (over a month ago), I couldn't stop complaining about the battery life. Now.. maybe because of the updates, change in usage habits, and change in settings, I think it's pretty darn good. 7 hours off the charger, and at 81%. Fairly light usage today... just a few emails and some web browsing.
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