Database Info

battery life

anyone feel as if their battery life sucks? I do have 4g on at all times but I didnt think it would make that big of a difference in terms of battery life.

See my post here:
http://forum.xda-developers.com/showthread.php?goto=newpost&t=839935
Try installing a monitoring app and see if your init process is hitting the CPU hard. I haven't heard from any other mt4g users with the same problem, but lots of.desirehd users have it.
I also have seen my suspend process eating 50%+ CPU when the phone is locked/screen off. Haven't found a fix for that yet though.

I'm getting a full 24 hours of heavy texting, moderate phone calls. Battery life is better than my magic... im having no issues.

Yes, I woke up this morning and my phone was already blinking and battery is on 8%. I left it overnight with more then 60%
A big problem also is that SetCpu cannot force the scale. If limit to 768 Mhz it still scale to 1024. So not I am sure that my ScreenOff profile with 245 Mhz DOESN'T WORK!
THAT'S SUX!!!

QUEDRO said:
Yes, I woke up this morning and my phone was already blinking and battery is on 8%. I left it overnight with more then 60%
A big problem also is that SetCpu cannot force the scale. If limit to 768 Mhz it still scale to 1024. So not I am sure that my ScreenOff profile with 245 Mhz DOESN'T WORK!
THAT'S SUX!!!
Click to expand...
Click to collapse
Weird I leave my phone at full overnight and its still at full when I wake up.

Try disabling the preflock that might help before I did that it wasnt scaling properly now afterwards it is.
Sent from my HTC Glacier using XDA App

I have frozen a few apps and use advanced task killer every time i start up 9a lot of apps come on at start-up).
The result is pretty good battery life. I have only gone dead when I had a few apps (like GPS navigation) running in background and forgot about them.

I'm having 0 issues with my battery. It easily beats out the battery life on the Samsung Vibrant I had.

I'm having issues too. My battery life today was 40% at 1 PM, and when I left this morning, it was full. I hardly even used the phone except to check email :/ I have brightness on auto and wifi off. Not sure what the issue is.

My battery life has been really good. A typical cycle is charge to full and disconnect power at 10:00 pm. Up at 6:00 AM, battery is still on 100%. Today my use has been moderate to heavy. It's now 2:30 PM and I have 68% left. I typically have around 30 percent left when I put in back on the charger. I'm happy with that.
Wifi, Bluetooth, GPS, etc., are kept off until I use them. I do however leave Background data and Auto-sync on all the time.

I turned on USB Debugging as recommended and my battery life is much better. Right now it hasn't been charged in 9 hours and is at 79%. I've downloaded 2 apps, updated 3 apps, sent multiple emails, light internet use, and 3-4 calls. I'm unrooted and don't use any task killers.

LAVS1 said:
I turned on USB Debugging as recommended and my battery life is much better. Right now it hasn't been charged in 9 hours and is at 79%. I've downloaded 2 apps, updated 3 apps, sent multiple emails, light internet use, and 3-4 calls. I'm unrooted and don't use any task killers.
Click to expand...
Click to collapse
That's awesome. I'm going to turn on USB Debugging mode and see if I can squeeze a little more juice out of it.

I have had intermittent battery-drain issues too. On Saturday morning my battery went from 100 down to 76% in a matter of an hour or two with hardly any use. I did a restart and it seemed better. I've also gotten into the habit of restarting my phone once a day, right before I take it off the charger in the morning. I've turned off quick boot, which I read somewhere in the forums can affect battery life. It's been pretty good the last few days. I'm at 68% now off charger for 9.5 hrs with moderate amounts of wifi, web browsing, email, and 3G network usage. I'm new to android devices so I don't have much to compare that to, but it's working for my schedule.

heavy user - fully charged phone at 7am ... start using after 7:30am
check emails, fb, txt, barely to no calls.....phone will be down to about 20% at 1:30~2pm....
yes the battery is lame...but this is a known issue with HTC...the 3.8 screen drains a lot of battery also the constantly searching for HSPA+ and 3G...
I do notice when screen is off....this phone still drains battery !!! bad =(
left over night at about 65% left in the morning I got red blinking led saying phone is below 10% .... 50% gone!!!
I think restarting the phone after a full charge is a good idea....also maybe turn off quick boot?
*update* yes I found that when you have a bad signal and it's jumping between E and H ... this eats up battery
also installed Advance Task Killer (for froyo) this helps~ now from 8am my phone can last until about 4pm getting about 3~3.5hrs more life

Mine lasts all day with everything on, playing games, email, text, etc, etc.
It is great, best phone I have had. Not sure what the issue is unless it is root.

It depends where you live.
If you get a good antenna signal, your battery will last.
At my apartment signal is low, so phone is constantly between UMTS and GPRS, plus phone is trying to hold H, so that drains the battery.
My signal strength parameters:
between -101 dBm and -107 dBm (where -110dBm is the edge of the signal/loosing signal)
3 asu and 7 asu

Current widget (and yes, I searched first)

Does anyone know what's up with Current Widget? It's constantly reporting very high idle-draw values that I KNOW aren't correct. It's always reporting draws of anywhere from 70-400mah. If those numbers were accurate, my phone would be dead within hours but I'm getting very good battery life so they can't be right.
Every idle drain app I've tried does this, on every rom I've tried. I've read posts where people say they're getting 2-4mah drain, so is it just MY phone that's funky or is there some other way to measure idle drain?

kabuk1 said:
Does anyone know what's up with Current Widget? It's constantly reporting very high idle-draw values that I KNOW aren't correct. It's always reporting draws of anywhere from 70-400mah. If those numbers were accurate, my phone would be dead within hours but I'm getting very good battery life so they can't be right.
Every idle drain app I've tried does this, on every rom I've tried. I've read posts where people say they're getting 2-4mah drain, so is it just MY phone that's funky or is there some other way to measure idle drain?
Click to expand...
Click to collapse
maybe you could try " battery calibration " from market and calibrate your battery... might do the trick..
and it's impossible to get 2 or 4 mah even in sleep mode on the sensation...
i use battery monitor widget and info are correct , on temperature and on Mah.. around 200 - 215 mah in standby mod..

It seems all the current draw apps are not working correctly on the Sensation at the moment.

You could estimate the idle current by noting your current battery capacity, putting the phone into sleep (screen off), and then leaving it that way (nothing waking it) for some amount of time. Then, after you have noted the time in sleep, check to see what the new capacity of the battery is.
Example:
Starting battery capacity: 1900mA/Hr
Sleep time: 1Hr
New battery capacity: 1850mA/Hr
Difference in capacity is 50mA, time is 1 Hr, so you used 50mA/Hr while in sleep. This will work out better for longer sleep times. It cant be 100% accurate since the reported capacity may not be 100% correct at any given time. (The monitor updates every minute or so)
This will, however, let you know whether or not you are seeing a reasonable current draw in sleep. It just wont be useful for knowing the EXACT value. At least you will know whether or not you are seeing low current draw or high.
Matt

I think it's got something to do with dual core. It was designed for single core.

[Q] For those who get 24+ hrs of battery usage

Battery drainage has been a major frustration for me with my phone. The frustration stems from the many variables associated with battery drainage. For the most part the terrible battery drainage started after flashing the modified ROMs. I believe the stock ROM was respectable when it came to battery drainage.
I am not ignorant to flashing ROMs. I have tried everything to figure out this battery problem; everything to keeping stock kernals, to battery calibration (delete battery stats), to battery bump charging, to matching radio files with RILs, to limiting data syncing, charge cycles etc.
But I am noticing that some of you are able to get good battery usage from a single charge with these modified ROMs. With that said, I want to cut the variables down and see what those folks who are getting over a day's worth of battery usage from a single charge are doing. The best indicator for battery usage to limit variables would be the battery usage standby rate with data network on.
I am not getting any better than 8%/hour on standby for any of these ROMs. That is crap. I wake up in the morning after 8 hours and there is only ~35% battery left. Unacceptable. I figure no more than 10% should be lost in 8 hours of standby.
So for those who have good battery usage, please answer the following questions so that we can eliminate all the variables.
1. What is your standby battery drainage rate?
2. What version phone do you have (TMoUS or EUR)?
3. Clockwork Recovery version?
4. What ROM are you using?
4. What Radio and RILs are you using?
5. How many charge cycles are you doing after the battery calibration and before you are getting the good standby rate?
6. Are you using any battery saving applications?
Please help if you can. Everyone seems to emphasize speed and performance but battery life is number one priority for any phone in my opinion.
Thanks

I'm currently running the P3D Neon ROM. I was having the same issues you are having due to flashing a new ROM jsut about every day. The big thing I noticed is that the longer I stayed with the one ROM the better my battery was. But as I'm sure you already know that no matter what a smartphone is a battery hog anyway.

By the way have you tried this, I am using it and love it !
http://forum.xda-developers.com/showthread.php?t=1128568

Tmobile model sensation
Latest radio with .56
Latest LeeDroid
Anker battery
Latest cwm
Do a charge cycle every time my battery dies
I use battery calibration app from market
No battery saving apps
Standby I have no clue lol it sometimes doesn't budge but sometimes I get 1% every hour and 1/2
Light use I get 26+ hours.
Medium I get 16+
Heavy I get 9+
Hope that helps.
Sent from my HTC Sensation Z710e using XDA Premium App

I've had my phone a week and am using stock Rom. I've S-Off, Root and install backup. Overnite, the battery only goes down 5%
If I were u, I'd get Android Assistant from the Market and check that all apps are closed. Check ur start-up apps and clear ur cache before u shut down ur phone.
Sent from my HTC Sensation

More than likely, there are apps that are not allowing the phone to sleep when the screen is off. CPUstats will show you how long your phone has been in deep sleep, as well as your CPU clock speed.
Here is what I would try out:
1-Get CPUstats.
2-Turn off the screen for the night
3-Check to see how long the phone was in deep sleep mode. It should have been for awhile if not, you have a rogue app that is bothering your phone while it sleeps.
To check your standby current:
So far, we cannot accurately see what it is. I dont know of any app that can for our phones. I do know that the values I see cannot be correct, otherwise my phone wouldnt be lasting long.
1-Write down your current battery capacity in mA/Hrs.
2-Write down the time that you put your phone into sleep.
3-Leave it off for an hour.
4-Wake it up and check the new battery capacity.
An Example:
I started with 1900mA/Hr.
I let it sleep for 1 hour.
I found that after an hour, I was down to 1850mA/Hr. That is 50mA gone, over 1 hour time. So my standby current was 50mA/Hrs.
Now this is only a crude way of judging whether or not your phone is behaving. Since the battery apps update capacity every 5 mins or so, you may not be right on the money, but you WILL know if something is BAD. Calculating 50mA +/- 20mA means the phone is likely sleeping as it should. Calculating 300mA+/- 20mA means something is USING your phone without your permission.
Youll need to find out if some apps are syncing (or trying to sync) while it sleeps. Or, your phone may be trying to improve your signal strength.
Matt

The anker battery will help but it is not solving the problem. We need to be getting around 1-2%/hour standby drain like some of you guys are getting.

mrg02d said:
More than likely, there are apps that are not allowing the phone to sleep when the screen is off. CPUstats will show you how long your phone has been in deep sleep, as well as your CPU clock speed.
Here is what I would try out:
1-Get CPUstats.
2-Turn off the screen for the night
3-Check to see how long the phone was in deep sleep mode. It should have been for awhile if not, you have a rogue app that is bothering your phone while it sleeps.
To check your standby current:
So far, we cannot accurately see what it is. I dont know of any app that can for our phones. I do know that the values I see cannot be correct, otherwise my phone wouldnt be lasting long.
1-Write down your current battery capacity in mA/Hrs.
2-Write down the time that you put your phone into sleep.
3-Leave it off for an hour.
4-Wake it up and check the new battery capacity.
An Example:
I started with 1900mA/Hr.
I let it sleep for 1 hour.
I found that after an hour, I was down to 1850mA/Hr. That is 50mA gone, over 1 hour time. So my standby current was 50mA/Hrs.
Now this is only a crude way of judging whether or not your phone is behaving. Since the battery apps update capacity every 5 mins or so, you may not be right on the money, but you WILL know if something is BAD. Calculating 50mA +/- 20mA means the phone is likely sleeping as it should. Calculating 300mA+/- 20mA means something is USING your phone without your permission.
Youll need to find out if some apps are syncing (or trying to sync) while it sleeps. Or, your phone may be trying to improve your signal strength.
Matt
Click to expand...
Click to collapse
I like this test, I will check it out.

My Battery stats

I am on CatyROM 2.0
My battery stats are:
current battery is: 33%
11h 13m 28s on battery
Voice Calls: 31% --> Time on: 12m 40s
Cell stand by: 30% --> Time on: 11h 13m 28s
Display: 18% --> Time on: 11m 9s (My display is at around 25% - not on auto display)
Phone idle: 12% --> Time on: 11h 2m 18s
Face book: 4% --> CPU usage: 55s, CPU foreground: 55s, stay awake: 5m 34s, GPS: 38s (2 hours after disconnecting the phone from charger, I signed out facebook, so these times are for first 2 hours only)
Android OS: 3% --> CPU usage: 2m 2s
These are my phone stats after I woke up today. As you can see I rarely used my phone after I disconnected my phone form charger. Is these stats or normal. Without using anything, my phone is dying in 15 hours. Is this expected?
My GPS, blue tooth and wifi are off. I am not at auto brightness, brightness is less than 30%.
My auto sync with Gmail is on.
My email app (yahoo) sync settings i changed to never. As per my knowledge, no other apps are running.
If is normal I will stop worrying about battery.. please advice...

Any one help me, whether these stats are normal or not?

15 hours is good. If you were on Froyo, I'd say that's phenomenal. GB definitely improved battery drain though.
The litmus test I use is if it lasts me all day without the need to charge, it's good enough.
Hope this helps.

jvanlew said:
15 hours is good. If you were on Froyo, I'd say that's phenomenal. GB definitely improved battery drain though.
The litmus test I use is if it lasts me all day without the need to charge, it's good enough.
Hope this helps.
Click to expand...
Click to collapse
I am on GB. and during this 11 hours, I rarely used the phone. once to check gmail, and once to logoff facebook, other than that, I didnt touched my phone. so my point is without using phone, 15 hours battery time is good?

Your cell standby % being so big indicates that, your phone is struggling to get service.
I am also on caty. If I leave my phone at 100% and fall asleep I will wake up 8 hours later and about 10% will drain.
In contrast, when I'm at work, I get no service. I work in a kitchen and the walls are pure steel. When I leave after a 12 hour shift my cell standby is ridiculous.

BadFishCM said:
Your cell standby % being so big indicates that, your phone is struggling to get service.
I am also on caty. If I leave my phone at 100% and fall asleep I will wake up 8 hours later and about 10% will drain.
In contrast, when I'm at work, I get no service. I work in a kitchen and the walls are pure steel. When I leave after a 12 hour shift my cell standby is ridiculous.
Click to expand...
Click to collapse
So you mean to say that, I dont have enough signal at home, and its keep on trying to get the signal, so thats why my battery is draining fast?
if so what should I do? like if i switch of 3G, it will stop searching for 3G signal, but still i can get the phone calls?
and how can I make sure that, i am having signal fluctuations at home?

atrix4nag said:
So you mean to say that, I dont have enough signal at home, and its keep on trying to get the signal, so thats why my battery is draining fast?
if so what should I do? like if i switch of 3G, it will stop searching for 3G signal, but still i can get the phone calls?
and how can I make sure that, i am having signal fluctuations at home?
Click to expand...
Click to collapse
Check something for me, click on cell standby next time and tell me how long it says under "time without signal". That should help narrow down the issue.
No matter what though your cell standby shouldn't be that big.
If you turn 3g off you should still be able to receive texts/calls.

BadFishCM said:
Check something for me, click on cell standby next time and tell me how long it says under "time without signal". That should help narrow down the issue.
No matter what though your cell standby shouldn't be that big.
If you turn 3g off you should still be able to receive texts/calls.
Click to expand...
Click to collapse
ok, I will check these details tonite..

Yea that's high...I'm on my rom also and my cell standby is %5.... after 11 hrs %13 of the time without signal....
Sent from my SAMSUNG-SGH-I997 using xda premium

this seem to be fine :S.
but what helped me a lot
its advance task killer
and if your phone is rooted get set cpu
amazing apps that can help you with your battery

android2.0 said:
this seem to be fine :S.
but what helped me a lot
its advance task killer
and if your phone is rooted get set cpu
amazing apps that can help you with your battery
Click to expand...
Click to collapse
Try advanced task manager. Works better if your in froyo or gingerbread. Anyway, I don't know if I need to do this or not but I will reset my battery stats every once in awhile to help with battery life.
Sent from my SAMSUNG-SGH-I997 using xda premium

Just thought I'd chime in here but, most task killers from the market are pretty pointless. They can actually make things worse especially if your constantly FCing apps. Android has a built in task killer which means your running two task killers if you have a third party one. If your rooted use Juice Defender for slight batt life gains.
Also the battery in our Infuses don't need to have battery stats reset, just pull your battery and reinsert.
People look for some kind of miracle app when in all reality, Android OS/devs already have optimized the system to be pretty conservative while also maintaining a stable system.

I got the issue..
Problem is with Microcell (ATT signal booster).
I dont know exactly whats the reason, but this is what I have done yesterday..
can some one confirm this, who has a Microcell or my microcell may be buggy..
yesterday I fully charged the phone, within 30 mins i lost 5% battery without much use..
Switched of my microcell..
My current battery is: 41%
and phone on battery is 15h 4m 34s..
voice calls 1h 10m 34s
display 1h 1m 1s
i am pretty satisfied..

I'm on CatyRom 2.0 also, I'm on 21 hrs at 37% battery. Light/medium use. What I've really found makes a difference is to turn location services and GPS off. I leave the Wifi on but it only turns on when the phone screen is on. (menu button>advanced in Wireless Settings). Before I was getting 40% drain overnight sometimes. Now about 5-8% overnight (6 hrs).
EDIT: And use the built-in task killer.

Todays stats
current battery: 15%
time since unplugged: 1d 1h 35m
Cell stand by: 50% (time on: 1d 1h 35m)
phone idle: 20% (time: 1d 1h 19m)
Display: 12% (time: 15m 40s)
Android OS: 4% (CPU Usage: 4m 21s)
Facebook: 4% (CPU Usage: 45s, CPU foreground: 45s. Stay awake: 7m43s)
Android System: 2% (CPU Usage: 25s, CPU foreground: 22s, stay awake: 1m 29s, Data sent: 744 bytes, Data received: 30.9 Kb)
Google Search: 2% (CPU Usage: 12s, CPU foreground: 0s, stay awake: 3m 58s)
GMail: 2% (CPU Usage: 58s, CPU foreground: 58s, stay awake: 2m 48s)
google+: 5s (CPU Usage: 5s, stay awake: 2m 15s)
As you can see I rarely used my phone (16m in more than a day).
is these stats are fine, or still some thing eating my battery?

Question Cell standby draining a lot of battery overnight

Sometimes I leave my phone not charging overnight because I know it'll be fully charged in like 30mins and I don't want to damage the battery. I would turn it off but for some reason my alarms don't work even when "Shutdown Alarm" is turned on.
So I leave my phone sleeping at 75% and I sleep for like 8 hours. I wake up and it's 45%. And when I look at my battery usage, it's mostly "Cell Standby". Does anyone know how I can fix this? thanks

Pearoo said:
Sometimes I leave my phone not charging overnight because I know it'll be fully charged in like 30mins and I don't want to damage the battery. I would turn it off but for some reason my alarms don't work even when "Shutdown Alarm" is turned on.
So I leave my phone sleeping at 75% and I sleep for like 8 hours. I wake up and it's 45%. And when I look at my battery usage, it's mostly "Cell Standby". Does anyone know how I can fix this? thanks
Click to expand...
Click to collapse
It's good that >you found< the cause of the battery drain.
Prolonged use of fast charging degrades the battery.

Take A bugreport.
Use BatteryHistorian to Analyse what exactly uses "cell standby".
There could be thousands of different wakelocks.
If you have no Clue.. factory reset is Always a good recommemdation.