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Old 10-04-2008, 08:04 AM
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cappy
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Re: i know why battery life sucks so much!

Good Posts mabmarc, the7thson, tg1.0. The numbers and analyses that you provided have moved this discussion forward.

Comparing apples with apples is important. Many of the numbers that all three of you have provided are identical, once equalized for the tools used. My phone reports similar numbers.

Following up on the7thson's suggestion, I have listed the available reported numbers for all 4 phones, adjusted by -100 for numbers reported from NuePower and assuming lowest backlight. Perhaps it will provide more clues. Please correct any errors.

All radios off
mabmarc - 57Ma (includes -100 adj. for NuePower)
tg1.0 - 57Ma
the7thson - 57Ma
Cappy - 57Ma

Phone radio on, others off
mabmarc - 57Ma (includes -100 adj. for NuePower)
tg1.0 - 57Ma
the7thson - 57Ma (or 218Ma?)
Cappy - 57Ma

Phone, Bluetooth On
mabmarc -
tg1.0 -
the7thson - 61Ma
cappy - 61Ma to 125Ma (see comments below)

Phone, Wifi On
mabmarc -
tg1.0 -
the7thson -
cappy - 283Ma to 301Ma (see comments below)

Phone, Bluetooth, Wifi On
mabmarc - 198Ma (includes - 100 adj. for NuePower)
tg1.0 -
the7thson -
cappy - 287Ma to 369Ma (see comments below)

COMMENTS and OBSERVATIONS
I have the Airave running, so the signal strength is optimal. NuePower is installed, but the numbers that I report are from a plugin tool called HomeScreen Plus. It always reports 100Ma less than NuePower. This plugin is installed in conjunction with the SecondToday screen, both by the same vendor. If you are interested, the link to the site is http://www.chi-tai.info/cs_wm_tools_im_cs.htm. I find this combination of the SecondToday and Homescreen Plus convenient and Homescreen reports CPU usage, battery status, and discharge rate, among other things, on one easily accessible screen.

Phone, Bluetooth On - the7thson reports 61Ma. My phone varies from 61Ma to 125Ma and tends towards holding at the 125Ma.

Phone, Wifi On and Phone, Wifi, Bluetooth On
When Wifi is On, the discharge swings often and does not go below 283Ma. It goes as high as 400Ma+. Also, I noticed that the backlight dims, but does not go off as quickly. In fact, it did not go off at all for the 3+ minutes that I watched it before turning it off. Without Wifi On, my backlight goes off after about a minute. I aslo noted that CPU usage goes up considerably. With Wifi Off, CPU usage hangs at about 1% at rest. With Wifi On, usage goes up to as high as 20%, but it is not constant. Note that I have not actually connected to my Network.

Miscellaneous 1 - tg1.0, your Password observations in the thread that you linked to are interesting. When I have time, I will try to duplicate the test.

Miscellaneous 2 - The way I have my phone set up (no more energy to go into detail), the Second Today screen briefly appears when turning it on from standby. During this brief period the discharge reads 13Ma. Perhaps, for my phone this is the discharge rate with the backlight off. I cannot be sure, but if it is, that indicates 104 hours of standby time can be expected. Just an observation.

Finally, moving away from the details, I have been monitoring the battery performance for 2 days. In the last 49 hours (6:40am on 10/2/08 to 7:40am today). After 1 hour of talk/data time, several weather checks, turning the phone on/off 30-40 times to check the clock, and switching to the settings screen a few times, my battery reading was 47%. During the last hour or more of switching screens and changing settings to report the findings above, the battery dropped to 39%. The phone has been on the whole time with the phone radio on and other radios off.

NOTE: I just turned the phone off and on again to test someone's observation in another thread that the battery reading fluctuates and cannot be relied upon. Upon turning the phone on again, the battery reading did drop from 39% to 27%. Turning off and on a second time it remains at 27%. I don't know what to conclude from this. I suppose it is subject of another thread.

Quoting the7thson - "Whew" !!!
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