Database Develop

Battery drain tweak? May solve drain :)!

I was using for a long time the rom from QTek with version 2.18. The reason that I sticked so long to this rom is because its efficiency with the battery. As soon I updated to a newer AKU rom I experienced the same problem, in standby it drains much more battery than this QTek rom. Normal a night it costs about 1%, with the newer roms is dropped as soon as 20%. I searched for a reason and finally I found it. I removed the SD card and I saw the problem solved. So there must be something with the SD Card. I searched in the registery and found that the power management function for the SD Card driver is disabled. This means the sd card is always enabled and at full function (= full power).
If you like to enable the power management function of this driver change this key in the registery
HKLM/Drivers/SDCARD/ClientDrivers/Class/SDMemory_Class/DisablePowerManagement change this value to 0. And try then.
I use now WM6 and changed this value, now it is using less battery than the qtek rom.
Without this setting I was able to user Crossbow and newer AKU roms for MAX 48 hours. Normal (and now) it is 4 ~ 5 days or even more if I keep it more standby
Please tell me if this also works for you.

After installing the aku 3.x rom I noticed an amazing increase in battery drainage.
Checked and set the parameter as you said which did the trick.
Thanks for sharing! you really helped me out here.

Well done mkara!
I, as many others, have experienced greater battery drain with the newer ROM's as of late. I'm not sure if this is what the difference was per se...but regardless...this really has helped with battery efficiency.
Fantastic find here.

Does anybody know what enabling power management does?

mkara said:
I was using for a long time the rom from QTek with version 2.18. The reason that I sticked so long to this rom is because its efficiency with the battery. As soon I updated to a newer AKU rom I experienced the same problem, in standby it drains much more battery than this QTek rom. Normal a night it costs about 1%, with the newer roms is dropped as soon as 20%. I searched for a reason and finally I found it. I removed the SD card and I saw the problem solved. So there must be something with the SD Card. I searched in the registery and found that the power management function for the SD Card driver is disabled. This means the sd card is always enabled and at full function (= full power).
If you like to enable the power management function of this driver change this key in the registery
HKLM/Drivers/SDCARD/ClientDrivers/Class/SDMemory_Class/DisablePowerManagement change this value to 0. And try then.
I use now WM6 and changed this value, now it is using less battery than the qtek rom.
Without this setting I was able to user Crossbow and newer AKU roms for MAX 48 hours. Normal (and now) it is 4 ~ 5 days or even more if I keep it more standby
Please tell me if this also works for you.
Click to expand...
Click to collapse
I just tried it this AM and while it is too soon to really tell, it does seem to be making a difference but I would like to know if all it does is enable full access to the SD card, and exactly how it does this. I don't run programs off the card so that isn't a potential side effect but I wonder if it could be.

The powermanagement means that the driver can disable the SD card.
This is normally done when the device is in standby mode, the SD card is also shutdown.
Only what I can think what happens is that if you get the device back from standby that the sd card is not DIRECT accesible (but after a few ms).
It should not be a big deal
Power management is normally done on Wifi, LCD, CPU and many things.
WiFi is completely shutdown on standby because is not needed. LCD same thing. CPU is running on low frequency.
I didn't experience any problems. It is the same behaviour with the older 2.xx roms. If you used this roms and had no problem this should be work perfect.
My battery is now absolutely perfect running with this enabled. Even better than WM5

I noticed a big battery drain also. I have applied this workaround, and I will let you know in a few days how it worked out.
Thanks for the find!

it seems to be better for me with this reg change, but still not to the same battery life i got from AKU2. This morning it was looking really good. 30 minute phone call plus exchange mail and it only dropped to 95%
then all of a sudden it was down to 83% and is now at 68% with only maybe 5-10 minutes of voice calls since. i'll keep experimenting, but the battery life issues still seem to be there for me.

mkara said:
I was using for a long time the rom from QTek with version 2.18. The reason that I sticked so long to this rom is because its efficiency with the battery. As soon I updated to a newer AKU rom I experienced the same problem, in standby it drains much more battery than this QTek rom. Normal a night it costs about 1%, with the newer roms is dropped as soon as 20%. I searched for a reason and finally I found it. I removed the SD card and I saw the problem solved. So there must be something with the SD Card. I searched in the registery and found that the power management function for the SD Card driver is disabled. This means the sd card is always enabled and at full function (= full power).
If you like to enable the power management function of this driver change this key in the registery
HKLM/Drivers/SDCARD/ClientDrivers/Class/SDMemory_Class/DisablePowerManagement change this value to 0. And try then.
I use now WM6 and changed this value, now it is using less battery than the qtek rom.
Without this setting I was able to user Crossbow and newer AKU roms for MAX 48 hours. Normal (and now) it is 4 ~ 5 days or even more if I keep it more standby
Please tell me if this also works for you.
Click to expand...
Click to collapse
NICE !!!
I have made a cab to do it.

Hope this solves the problem...

majority of my programs are installed on the SDcard, how would this effect it? will it take a while for me to load my programs?

Well been a full day(workwise) when my device is used the most and this registry change has helped.
Thanks!
.

I just applied it to a full battery.....here's to hoping it works.....will let you guys know.

I was also plagued by this issue. Made the changes - will let you guys know if this helps too.

I made this change yesterday and this moring woke up at 7:30 to 85% battery An hour later it is down to 82% and all I did each time was switch the device on to see the clock (and battery status obviously). This is similar behaviour to when I had the 2.47 & 2.61 Radio ROMs installed, looks like I'll revert the registry setting back and see if it 'cures' itself
Andy

ADB100 said:
I made this change yesterday and this moring woke up at 7:30 to 85% battery An hour later it is down to 82% and all I did each time was switch the device on to see the clock (and battery status obviously). This is similar behaviour to when I had the 2.47 & 2.61 Radio ROMs installed, looks like I'll revert the registry setting back and see if it 'cures' itself
Andy
Click to expand...
Click to collapse
Hmm strange, with me it helps. Also with the Radio 2.61 rom (But I don't suspect the Radio rom). If you use batterystatus don't use the extra indicators (that update with a interval). I THINK (not sure) these indicators don't let the CPU go to standby.
I'm sure you've tried correctly this setting but you have to restart your mobile after this setting.... (After changing let the device flush the registry, about 5 a 15 sec in standby, and then soft reset).
If you want to be sure that it not the SD card, remove it if you go to sleep....

i tried this and after 12 hours with barely any use my battery was down to 59%

mkara said:
Hmm strange, with me it helps. Also with the Radio 2.61 rom (But I don't suspect the Radio rom). If you use batterystatus don't use the extra indicators (that update with a interval). I THINK (not sure) these indicators don't let the CPU go to standby.
I'm sure you've tried correctly this setting but you have to restart your mobile after this setting.... (After changing let the device flush the registry, about 5 a 15 sec in standby, and then soft reset).
If you want to be sure that it not the SD card, remove it if you go to sleep....
Click to expand...
Click to collapse
Reverted the registry change and this morning woke up to 98% battery
I think I'll leave it at the default of 1 for the time being until some more information becomes available.
Andy

ADB100 said:
Reverted the registry change and this morning woke up to 98% battery
I think I'll leave it at the default of 1 for the time being until some more information becomes available.
Andy
Click to expand...
Click to collapse
Hi Andy,
Very Very strange indeed. I also recommend you to leave it in default setting. I use a G3 (maybe here are also differences?). I must say that I didn't test this on Faria's 3.3.0 rom because for me it is very unstable and WiFi is impossible for me on this rom. (I also don't understand it, but there are differences in the phones I think).
For me it worked on Crossbow. But it seems you don't have this problem? If you wake up and battery dropped only 2% it's nothing!. For me it dropped 20~30% just for a night standby

i made the change last night, fully charged and woke up to a DEAD PHONE
as in it wouldn't even turn on! (even though it was a full charge)
I had to pull the battery out, wait 5 minutes, put it back in, and it finally booted to 100%. i thought i lost my phone

is this the correct way to recover from battery drain?

I recently upgraded my wizard from a wm6 rom to another and started to notice the battery indicator dropping much faster if I'm on EDGE networks (but maybe also with GPRS, I'm not sure). Since I didn't flash to the official rom before, I thought I had the common battery drain, so I did this: full backup using spb backup, remove hardspl, flash to original qtek rom, hard reset, flash updated radio rom, softspl, flash to wm6 rom, hard reset, restore previous full backup.
The problem is that I'm still noticing the battery going down faster than before. I'm not sure about it, because with this new rom I have a more reliable way to measure the battery, but before flashing all over again and reinstalling every single program (lots of time) I wanted to ask if my method of flashing does solve the battery drain problem (and therefore this is normal for this rom) or if this method does not solve the problem and I have to do everything without the full backup.

- check if processor speed is always high. Latest BatteryStatus allows variable speeds according to the needs of the OS - calls it CPU scaler;
- check if bluetooth or infra-red are turned ON as they drain some energy;
- check the backlight. Mine is always at the minimum and works fine in almost all occasions (except under bright sun light)
- disable Today timeout
- check power drain with a new battery (if you can get one)
that's all i can think of. maybe others can think of other reasons.
good luck

maybe I didn't explain all... I know what can cause greater battery usage, and I try to avoid it, but comparing the previous rom with the new one it seems the new one uses more battery. I also know this can be a "feature" of the new rom and I don't mind about it, because it's really much better. What I want to make sure is that the battery drain is not caused by improper flashing, because that's just wasting battery for nothing.

ah, right.
I don't think there's such a thing as 'improper flashing' when the new ROM works ok. Except for not performing a hard-reset afterwards i guess nothing can cause that kind of power draining, although some have mentioned corrupted extended-rom but i can't vouch for that

Currently I DO think there is something like 'improper flashing'.
I've read about it in another topic as well.
Since I upgraded to WM5SE rev4 I suffer from a severe battery drain.
For some time I suspected my dual sim adapter (did change to that one about the same time as upgrade), but even without adapter the drains stays wel above 100ma!
Until now i have eliminated all other possibilities.
The best way to upgrade to any custom rom appears to be:
- Flash to an official ROM
- Flash the custom ROM.
I seems to have something to do with the ExtROM that sometimes get 'a bit' corupted causing tha battery drain. Flashing an official ROM makes sure youre device is all fresh before getting the custom things on.

ok, but I already did that. The problem is that I'm still seeing some battery drain, especially if I'm on an EDGE network. I just wanted to know if restoring from a full backup using spbbackup after flashing properly could be the reason or if I must find another cause.

Sometimes can be a Today plugin that is performing some task all the time and that might cause battery drain.
there used to be old topics on that matter so i guess you must dig and raise some dust to get it clear

now that you mention it... there is a new plugin in this rom, I'll disable and test. But I still find strange that when I'm on gprs the battery drain is almost inexistent, but on edge is really big

paulo_andre said:
now that you mention it... there is a new plugin in this rom, I'll disable and test. But I still find strange that when I'm on gprs the battery drain is almost inexistent, but on edge is really big
Click to expand...
Click to collapse
Did you solve your problem?
I can't!

I have experience some issues
When I started trying PDA VIET Roms i feel like I got a new device cause it has superior speed but its caused by An app called OmapClock PLUS that enables an overclock, thats why the speed but it has too many batt drain... so i leave the PDA Viet Roms... I always first downgrade to an original ROM Wm5 then upgrade to a Custom and then hardreset... of course sometimes with a batt at 55% (enough to flash) but Mr SVI on his first release BrightRom has too much Batt monitor... it causes too a batt drain cause the reload constantly by itself to show batt drain... disable all. and no more problems jeje even on his Hornet v1.1 it has drain for me.
Somebody tolds me that I need to reflash my device with a batt at 100% but i didn't prof that solution so if you like to check that. tell us how is it going.
Hope it was usefull.

question on wm6 and battery

Hi all,
I have installed the WM6.1 ROM 6.1.2a16CS by C. Shekhar on my qtek2020.
It is very cool and gave a second life to my qtek. I am just a bit surprised by the duration of the main battery. It is running out of bat very fast.
As I haven't used my qtek for month before installing the new ROM, I can't tell if it's a battery problem or because this new ROM is consuming more resources. Have you noticed such behavior on your machines?
For further info I am not using my qtek as cell phone. I am thinking about using it back as a phone, but I have first to fix this battery aspect.
Moreover I have read s/t about a battery fix, that I haven't installed yet. Can s/o tell me more about this fix and what it is doing?
Anyway this ROM is a great one.
Thx for your answers
Marc

I dont know about the battery fix but i have never installed any sort of fix like that either for wm5 or wm6.x. Are you sure there isnt some background process that keeps on continuously running? It could be a battery problem if the battery had discharged alot during the non-operational period. I changed by himas battery about 7-8months back because the last battery had gotten abit too old and was discharging very quickly.

i think you are talking about SD card fix..its a registery fix that makes the battery consumption by SD-card low

well, WM5 and WM6.x IMHO are battery consuming ROMs, i can attest to this,
experiment no. 1:
same xda, same battery (1200mAH original battery)
-with WM2003SE at normal use, XDA turns off approx after 36 hrs of use including standby.
-with WM5 and WM6.x, XDA turns off WM5-18hrs, WM6.x-25hrs of use including standby.
experiment no. 2:
two xda, different OS, both with brand new 3600mAH extended life battery.
in 1 day (at heavy texting use from 7am to 7pm):
WM2003SE XDA2 - battery from 100% to 58%
WM6.X XDA2 - battery from 100% to 35%
possible explanation:
WM6.x (WM5) uses more CPU time and Memory resources, plus it probably uses more power in maintaining the persistent storage, hard and soft reset persistent memory.

MODS PLEASE REMOVE THIS POST

ather90 said:
i think you are talking about SD card fix..its a registry fix that makes the battery consumption by SD-card low
Click to expand...
Click to collapse
Ather, is this fix already in all/most recent releases? If not, can you give us a link? Never heard of it.
I have no battery problems, quite the contrary. My battery life is amazing me. To be honest I tweaked a lot when I started using WM6.x, too much to remember, too much to tell you.
but some parts:
I don't need 24/7 phone connection, Phone Alarm takes care of this for me
Use a bare minimum of today plug-ins
Avoid animations
Close programs except when you seriously do need them in the background

Heya Maggy...its long time since i saw u here.. think maybe month
welcome back ny ways
well that fix was in the Imate website..i have it
having some problem attaching on xda : http://www.2shared.com/file/3591354/873d3f18/SD-Card_Patch.html

Battery performance of official ROM is the best!

I have tried a lot of roms,including touch it v4.5,Jack's 3.0,offocial rom R2AA010 and some chinese roms etc .
The battery performance of R2AA010 is the best,much much better the others.
I don't know why,someone says the official rom lower the CPU frequency,but it still runs quite smoothly and fast.
I hope someone would find out the real reason and this power issue can be resolved in new roms.

The batt life for the cooked roms seems abt the same to me...

well, doing my personal testing, I just tested official (R1 and R2) and Jack's 4.0, 4.5 and now 5.0 (waiting till fix'd version to do a batt test) and I just find all version with the same autonomy.
the main thing I see, Is that I don't configure HSDPA connection autodisconnect in advanced settings (so the connnection is keep alive) battery drains much faster (in all roms).

why my battery drained so fast besides the official rom,maybe somewhere default settings are different between the various Roms.

tf3d just needs more cpu power and memory than the usual today screen of the stock roms. this, of course, drains the battery faster.

Battery consume depends only on cpu and memory (flash too) use (and on the radio, but you can't change that), so it is independent from the roms. Of course heavy loaded roms and today plugins use more power, so you decide what is important for you.

chalid said:
tf3d just needs more cpu power and memory than the usual today screen of the stock roms. this, of course, drains the battery faster.
Click to expand...
Click to collapse
I also use TF3D

Yes
I agreed. But my big disapointment is the official have a lot of anoying application that I think I can't live with it.
The official ROM cooking might be the good chance.

it's quite surprising me that x1 battery (1500 mAh) performance is not better than TP (1340mAh).
V

vibranze said:
it's quite surprising me that x1 battery (1500 mAh) performance is not better than TP (1340mAh).
V
Click to expand...
Click to collapse
TP has only VGA screen while the X1 has WVGA and the higher resolution screen consumes more power. So it's not so surprising

imo, battery life for wm6.5 by itje is the best
official rom lasted me around 2 days or less back then

my battery was only lasting about a day until i changed to Touch-IT by itje and the battery is now 3-4 days depending on use.

my battery life is completely pony
This is something that is a big pain for me - my battery doesn't even last a day using itje's roms (haven't tested others yet)
I think HSDPA/3G has a lot to do with battery drain. The stock rom seems to disconnect it when it's not in use, but checking my phone now, it's been connected 11hours (since I last reset it). I could be wrong with this comment tho as I've not run the stock rom in months.
Have had a poke round the registry and can't find anything that might be a timeout...anyone more knowledgeable about this than me care to chime in?

djs10 said:
This is something that is a big pain for me - my battery doesn't even last a day using itje's roms (haven't tested others yet)
I think HSDPA/3G has a lot to do with battery drain. The stock rom seems to disconnect it when it's not in use, but checking my phone now, it's been connected 11hours (since I last reset it). I could be wrong with this comment tho as I've not run the stock rom in months.
Have had a poke round the registry and can't find anything that might be a timeout...anyone more knowledgeable about this than me care to chime in?
Click to expand...
Click to collapse
you can setup a timeout with the "advanced config" application and yes, leaving data connection enabled draws more battery than just letting it connect when needed.

Hi power consumption with clean rom

Hello i recently bought an older xperia x1. The problem is that the battery is emty in really shor time (10 hours), so i bought a new one. But the problem is the same.
I tried Kovsky unoff rom, also official rom.
Also tried clean rom with nothing installed and no settings changed, also some power management apps for win mobile.
Everything is turned off, wifi, data connection...
abcPowermeter shows 150mA power consumption, also when display is off.
taskmanager shows only 5-10% CPU usage for gwes.exe, i think thats normal when rendering results from taskmanager and all other CPU is for idle process.
I dunno what to try to solve this problem. Any ideas ?

My guess is you are running an always active program (like an IM program) that is sucking juice.
You may want to do a clean install and run it for a couple of days. See if the problem is your hardware or if it is that some software is the cause.
My battery life has improved from about 11-12 hours to about 48 hours after removing Palringo from my startup folder.
Also you mentioned you tried a clean ROM with no installed programs. If you didn't install any and you consistently have short battery time you have a hardware issue. Do the hard-reset, flash, hard-reset to ensure a clean install. Use a good ROM and do not install any apps. If after 4 days you still have short battery life then either your battery is dying (or generic and bad quality) or you have a hardware fault.

i tried hard-reset, flash, hard-reset. No changes

150ma idle is quite high IMHO. I run a test before because someone question my roms' battery usage and it should be around 80ma idle. http://forum.xda-developers.com/showthread.php?p=4784976&highlight=battery#post4784976
1. load the same radio.
2. Install Homescreen ++
3. Follow the conditions I tested over that post and see what you got.
Make sure you are in an area with good GSM signal too. Bad signal could lead your phone use a lot more power.
BTW, I found FDC task manager may not report real CPU usage especially if problem with services.exe. Try Memmaid to read CPU usage.

That acbpowermeter is a cool app. I never realized the panel I was using used so much power, and I didn't think having wifi on would consume as much as it did. Right now I'm using the WM6.1 that came with my phone and using the SonyEricsson panel with wifi off, and I'm getting an average of 70-80mA with the display on. Is this a good number?
I was looking into flashing to a 6.5 rom. Would I be getting better or similar battery consumption than the 6.1? If not, I think I'd rather just stay on 6.1 and customize my today screen with some eye candy, etc.

@jackleung
tried your radio with your rom, power consumption is even bigger, than in stock rom