i know why battery life sucks so much!

[cappy]

Originally Posted by schettj

Ok, then that's pretty much in line with "improved over previous generations" results.

We've got hardware that, in general, draws 20-50% less power then the Apache/Titan-era gear. It comes with a battery that is 15% lower in capacity. Should be a wash unless there is some other issue.

Diamond Tweaks/Advanced Config's "power savings" stuff should do all the right reg edits, and based on your numbers I'd say they're in. Unless there is some weird power spikes happening this thing should be able to at least do as well as my mogul

My mogul with stock battery after 16 hours with little use - hourly 2 account email checks, EVDO always on, mostly dormant, weather updates via yahoo/mortscript every hour, no direct push, light use less then 30 minutes total screen on time, battery @ 70-80% after 16 hours. Based on that I go a couple days with not much use pretty easily.

However, sounds like it's not?

I have not used the device exactly as you describe above, but there have been days where the usage was similar. On those days I would have a similar battery remaining - 70% to 80%. I began charging yesterday with 29% remaining battery life. That is after 49 hours of usage similar to what you describe, plus 1 hour of talk time.

[Tiberius85]

Just checked my battery again after 22 hours of sitting on my desk after reseting the data connection and not using any data. It has 85% battery left. At this rate, i could go 5 or 6 days.

[cappy]

It is too early for final conclusions, but I think that preliminary conclusions can be drawn, based upon the information that has already been provided. After all, 5 phones is a pretty small subset of the universe of Diamonds. As they say, YMMV. For my device, I find the conclusions below conform to my actual results.

Phone On
Data On but NOT transmitting, receiving
Bluetooth Off
Wifi Off

One should expect 4+days on standby. This must be adjusted for the actual talk/data time during that period. In my case, I have observed about 20% discharge per hour of talk/data time. The 20% is anecdotal, based upon the general observation of my device over the last week.

Phone On
Data On but NOT transmitting, receiving
Bluetooth On, but NOT paired
Wifi Off

Bluetooth On, but not paired, appears to draw on 4Ma. This would reduce expected battery life on standby to 3+ days. Again, adjusted for actual talk/data time. However, once the device is actually paired, battery consumption goes up (in my case, way up). I am exploring this further today to see if different paired earpieces consume the battery at different rates.


Phone On
Data On but NOT transmitting, receiving
Bluetooth On and Paired
Wifi Off

Not enough data to draw a conclusion.

Phone On
Data On but NOT transmitting, receiving
Bluetooth Off
Wifi On

Not enough data to draw a conclusion.

General Observations
If the Diamond will be used primarily for talk/data and you do not need BT, turn off BT and Wifi. You should get 4+ hours of talk/data, 4+ days of standby, or some combination of the two.

If BT is needed (i.e. paired continuously), results will vary, but discharge rate will go up. Hopefully more data will become available.

Wifi - only a guess, based upon limited data. I suspect that Wifi On is similar to talk/data time and will discharge the battery almost a quickly as talking for 4+ hours. So having the Wifi radio on will limit battery life to 4+ to 6+ hours.

[snovvman]

I see the same 61 mAh draw at idle as others (BL at step 1, BT on). The intresting part is that the Diamond seems to deal with poor coverage in the worse way regardless of observed drain value via the monitor tools.

At my office, I have near-100% coverage. At my house, I have very spotty coverage. Sometimes it would jump to 90+, only to immediately jump down to 6% or zero. EVDO/1xRTT is spotty. Often, the phone does not ring at all. I currently have the Diamond and Centro on Sprint. The Diamond replaced the Touch, M610, and A900 (along with many others that I only kept for a short time).

As expected, every phone I had with Sprint will last longer while I'm at the office. At the same time, they all die faster when at home. The Centro seems to be affected very little by the poor coverage. The Touch seems to deal with it okay as well (not a huge dive in battery life when I'm at home).

The Diamond is the worst, will last about six hours while I'm home. When I'm at work, based on the drain pattern, it is likely that I can go 12-14 hours. This observation is very consistent. No matter what I do, the battery burns like mad when I'm at home. I have never seen a phone that is affected as much by poor coverage.

I haven't compared, but I wonder if there are certain RF settings that is more agressive in the Diamond during cell-site communication when compared to the other phones...

[cappy]

Originally Posted by snovvman

I see the same 61 mAh draw at idle as others (BL at step 1, BT on). The intresting part is that the Diamond seems to deal with poor coverage in the worse way regardless of observed drain value via the monitor tools.

At my office, I have near-100% coverage. At my house, I have very spotty coverage. Sometimes it would jump to 90+, only to immediately jump down to 6% or zero. EVDO/1xRTT is spotty. Often, the phone does not ring at all. I currently have the Diamond and Centro on Sprint. The Diamond replaced the Touch, M610, and A900 (along with many others that I only kept for a short time).

As expected, every phone I had with Sprint will last longer while I'm at the office. At the same time, they all die faster when at home. The Centro seems to be affected very little by the poor coverage. The Touch seems to deal with it okay as well (not a huge dive in battery life when I'm at home).

The Diamond is the worst, will last about six hours while I'm home. When I'm at work, based on the drain pattern, it is likely that I can go 12-14 hours. This observation is very consistent. No matter what I do, the battery burns like mad when I'm at home. I have never seen a phone that is affected as much by poor coverage.

I haven't compared, but I wonder if there are certain RF settings that is more agressive in the Diamond during cell-site communication when compared to the other phones...

I have been using the Airave in these tests to ensure optimal signal. Originally, I got the Airave because I suspected what you describe, but I switched from Touch to Diamond shortly after the Airave arrived. A couple of days back, I turned the Airave off for a day to observe the effect upon the Diamond. First I was getting 1-3 bars with the Touch. With the Diamond it varied too, but more consistently held to the 3 bars. During the day, with the Airave off, there was no observable difference in battery consumption. Perhaps when the signal falls below a certain threshold, this makes the phone radio work. Only a guess.

[snovvman]

I'm also not certain that the drain value we see takes in account of the screen's LCD elements (not the backlight, but the pixels).

My Touch would show 67 mAh at idle, BT on, medium backlight.

The Touch is QVGA, total 76800 pixels.

The Diamond is VGA, total 307200 pixels.

Each pixel has three transistors (RGB). If you do the math of how many more trasistor the Diamond has compared to the Touch, the Diamond MUST draw more power just to drive the screen. What the tools report (between the Diamond and Touch) don't jive.

[cappy]

Originally Posted by snovvman

I'm also not certain that the drain value we see takes in account of the screen's LCD elements (not the backlight, but the pixels).

My Touch would show 67 mAh at idle, BT on, medium backlight.

The Touch is QVGA, total 76800 pixels.

The Diamond is VGA, total 307200 pixels.

Each pixel has three transistors (RGB). If you do the math of how many more trasistor the Diamond has compared to the Touch, the Diamond MUST draw more power just to drive the screen. What the tools report (between the Diamond and Touch) don't jive.

That's a little too technical for me. I can say this. When I do the math indicated by the settings reported by myself and others to predict my battery performance, the "actual" performance of the device over a period of hours and/or days conforms with the prediction, based upon the reported Ma discharge for each setting. So, for example, if I leave the phone in standby, Phone radio On, Data On but not trasmitting, BT Off and Wifi Off, the battery will discharge at a rate of 1.5% or less per hour.

Whether the reported discharge rates are absolute, that is can be compared directly to discharge readings reported from the same tool on a different device - that would involve more analysis.

[foxnews]

Originally Posted by foxnews

here is my battery usage using Battery monitor:



----on battery-----
first number is when the phone backlight is off after 30sec with no activity. the second number is when backlight is set on at third bar from the right (Power save from settings>power>backlit). gps is on for all settings

airplane
13
111

phone on
13
111

phone, data on
13
111

phone, data, BT on
17
115

phone, data, BT, wifi on
17
234

both phone/data are one:
if the screen is completely off, discharge is 13ma.
if the screen is completely on, then it draws about 111ma.
if the screen is dim, it draws 57ma.

other people readings are 57ma. is this number meassured when screen is dim?

[cappy]

Originally Posted by foxnews

both phone/data are one:
if the screen is completely off, discharge is 13ma.
if the screen is completely on, then it draws about 111ma.
if the screen is dim, it draws 57ma.

other people readings are 57ma. is this number meassured when screen is dim?

Correct. 57Ma at dimmest backlight with Phone On, Data On but not transmitting, BT Off and Wifi Off. Someone here calculated each level of brightness to add 9Ma to the total.

[foxnews]

Originally Posted by cappy

Correct. 57Ma at dimmest backlight with Phone On, Data On but not transmitting, BT Off and Wifi Off. Someone here calculated each level of brightness to add 9Ma to the total.

so my battery drain is consistant with other's. Can you update your post with my setting at dim?