Database Users

What sucks YOUR battery?

I have epic 4g now for a week. Its still not activated, just sits at home connected to wifi - while I use touch pro2, awaiting sero plus on oct 1st.
There is push sync with hotmail and google. I get home and play almost constantly with the phone from 5 to 11pm - testing new apps/games, reading twitter etc - before I get low battery warning.
My biggest surprise was that the SCREEN (supposedly high efficency AMOLED) is draining more than 40% of the battery! Not the wifi, not the cpu or whatever else is inside. This is with default power managment settings.
What numbers do you guys get in the end of the day? What are you using - 3g,4g,wifi,gps,apps?
Sent from my SPH-D700 using XDA App

Sometimes mine goes as high as 72%, and that's the screen alone, and i have the brightness down all the way to zero (and even at zero it's still plenty viewable).

Definitely the screen is the biggest battery drainer. I've NEVER seen anything higher usage than the Display. Its usually in the 60-80% of battery usage.
And I keep the power to the lowest setting on a daily basis.

The screen is always the biggest offender. Usually in the 70%+ range with brightness all he way down. The samoled talk is just marketing bs. Maybe better performance when the screen is black. Unfortunately all black backgrounds happen to be the minority on websites, applications etc.

Display used to be the main offender on my phone (60-70%) but since I upgraded to DI07, Cell Standby is crushing my battery. The airplane toggle doesn't do ****, had to buy a cable so I can plug it in at work just so at the end of an 8hr day I have more than 30% battery left even with JuiceDefender running. Getting pretty frustrated.

kidstechno said:
Display used to be the main offender on my phone (60-70%) but since I upgraded to DI07, Cell Standby is crushing my battery. The airplane toggle doesn't do ****, had to buy a cable so I can plug it in at work just so at the end of an 8hr day I have more than 30% battery left even with JuiceDefender running. Getting pretty frustrated.
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I have this exact same issue. Cell standby is killing my battery. Right now I have 18% time without signal... it has been as high as 25% before. I never had this issue before DI07.

Cell Standby is 41%, with Display at 32%, time without signal is a whopping 50%, and I get near-full to full bars at work and about 2-3 at home.

my cell standby was over 50% after the update. I went in and changed my call setting>System select and chose "sprint only" which will not allow the phone to roam, but it got rid of this battery drain. I have a lot more battery now. But i will have to turn it back whenever i loose service. There's got to be a better way to avoid this thing always looking for the GSM towers when it's a SPRINT PHONE and should for CDMA unless there's no signal. I don't understand how they allow such a dumb issue to haunt tihs phone.

My current numbers:
Cell Standby: 34%
Phone idle: 25%
Display: 17%
Android System: 10%
Email: 5%
Maps: 3%
Dialer: 2%
Wi-fi: 2%
Android OS: 2%
Cell standby has gone up for me since the update, but my last charge was actually the first time I saw any significant "time without signal", and I think that was because I had 4G turned on all day. I have it turned off now and that number is back to 0%.
I'm learning some tricks to keep the battery charged on this thing. Yesterday I managed to go all day from waking up to going to sleep without charging (around 18 hours, though I rebooted at one point so I'm not sure the actual total) and I still had about 1/5 of my battery gauge left.
I've found wi-fi makes a HUGE difference. I have wi-fi both at home and at work, and that's probably 80% of an average day for me. Wi-fi drains the battery *much* less than 3G.
I have my screen turned down not to 0, but probably 2 ticks over that. I use the notification bar swipe to turn it up or down, so I don't know exactly, I just set it to as dim as I'm comfortable with in any situation. Power mode and auto-brightness are turned off.
I switched my background from the default to one that's very dark. I'm convinced that makes a big difference.
I do use a task killer, but I leave my email running, along with whatever else seems like it should be kept running.
Obviously when you look at percentages, there's always going to be *something* at the top of the list, so it's pointless to constantly try to knock whatever's #1 down to the bottom. Different people use their phones differently, so if someone else has their display at the top, it just means they're looking at it a lot and maybe have it too bright. But no matter what you do, something's always going to have a higher percentage than anything else.

badasscat said:
My current numbers:
Cell Standby: 34%
Phone idle: 25%
Display: 17%
Android System: 10%
Email: 5%
Maps: 3%
Dialer: 2%
Wi-fi: 2%
Android OS: 2%
Cell standby has gone up for me since the update, but my last charge was actually the first time I saw any significant "time without signal", and I think that was because I had 4G turned on all day. I have it turned off now and that number is back to 0%.
I'm learning some tricks to keep the battery charged on this thing. Yesterday I managed to go all day from waking up to going to sleep without charging (around 18 hours, though I rebooted at one point so I'm not sure the actual total) and I still had about 1/5 of my battery gauge left.
I've found wi-fi makes a HUGE difference. I have wi-fi both at home and at work, and that's probably 80% of an average day for me. Wi-fi drains the battery *much* less than 3G.
I have my screen turned down not to 0, but probably 2 ticks over that. I use the notification bar swipe to turn it up or down, so I don't know exactly, I just set it to as dim as I'm comfortable with in any situation. Power mode and auto-brightness are turned off.
I switched my background from the default to one that's very dark. I'm convinced that makes a big difference.
I do use a task killer, but I leave my email running, along with whatever else seems like it should be kept running.
Obviously when you look at percentages, there's always going to be *something* at the top of the list, so it's pointless to constantly try to knock whatever's #1 down to the bottom. Different people use their phones differently, so if someone else has their display at the top, it just means they're looking at it a lot and maybe have it too bright. But no matter what you do, something's always going to have a higher percentage than anything else.
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How are you able to control the brightness with the notification swipe? I've made it brighter but not dimmer.
Sent from my SPH-D700

So for all the people that have their phone on the lowest brightness, but get a Display usage >50%...are you using your phone that much?
Because I have my display on auto, and my Display usage is a 32%, and that is still enough for it to be #1 on my battery use list.

First, let me get the immature response out of the way: "What sucks my battery? Your MOM!"
Now that that's out of my system, my battery drain is generally caused by the same things as everyone else: screen and TWS. Although I mitigate TWS by using the airplane mode trick which seems to still work for me.

Iilex said:
How are you able to control the brightness with the notification swipe? I've made it brighter but not dimmer.
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I dunno, I just do. The way the thing works is a little tricky, it seems like it's absolute rather than relative, meaning if your display is already on the dim side, you need to start with your finger way over to the left to take it down the last few ticks. There's only so dim you can make it - the lowest brightness setting would look like a 4 or 5 year old phone at its brightest. That's true regardless of how you dim it. So you may just have it pretty dim and because of the way the notification bar thing works, when you put your finger in the middle, you're making it brighter without meaning to. But if you slide all the way to the left, it'll be as dim as you can make it.

jemarent said:
my cell standby was over 50% after the update. I went in and changed my call setting>System select and chose "sprint only" which will not allow the phone to roam, but it got rid of this battery drain. I have a lot more battery now. But i will have to turn it back whenever i loose service. There's got to be a better way to avoid this thing always looking for the GSM towers when it's a SPRINT PHONE and should for CDMA unless there's no signal. I don't understand how they allow such a dumb issue to haunt tihs phone.
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+1 to this, after I changed this setting my time without signal is about 3% before it was up in the 50's. Good tip right there
Sent from my SPH-D700 using XDA App

I guess this is a commom issue... Unless epics hardware is sooo optimized and only sips power ;-)
Does anybody have data from other android phones - nexus, droids...?
Sent from my SPH-D700 using Tapatalk

3-4 hours of talk time takes up 70% of my use during a 10-16 hour usage. Second would be my screen.

My screen is 79% and cell standby only 7%
My screen is all the way down, even tho with the new update I notice my screen got dimmer than before.
Sent from my SPH-D700 using XDA App

Does power saving mode really save juice?

The way that I understand power saving mode is that it saves juice by changing backlight based on what is on the screen. However in order to do this it.means cpu would be constantly used. So does power saving mode really save juice? Is the amount of battery saved by changing backlight more than the battery used by constant cpu usage?

That's a good question but I highly doubt that they would add the feature if they didn't test that it actually saved power. But, stranger things have happened.

kangxi said:
That's a good question but I highly doubt that they would add the feature if they didn't test that it actually saved power. But, stranger things have happened.
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I assume you aren't basing that statement on recent events of failed quality control on high-end phones

No, it does not.

lemarg said:
No, it does not.
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And this is based on???

From what I have read, having power saving mode on is another process the cpu has to worry about therefore possibly causing more battery drain. Personally I have disabled power saving mode and auto brightness and have experienced a slight improvement in battery life. I use the slide on taskbar feature to adjust brightness manually.

I have both Power Saving Mode and Automatic Brightness on, 3G off, and I get over 40 hours in normal use! I hope that tells you these settings don't drain the battery and you shouldn't worry about having them turned on.
It is NOT putting an undue burden on the cpu, and small amounts of CPU usage have MUCH less effect than powering the screen.

steel_3d said:
I have both Power Saving Mode and Automatic Brightness on, 3G off, and I get over 40 hours in normal use! I hope that tells you these settings don't drain the battery and you shouldn't worry about having them turned on.
It is NOT putting an undue burden on the cpu, and small amounts of CPU usage have MUCH less effect than powering the screen.
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I have to ask what is normal use for you? Cant imagine getting 40 hrs on any device besides a BBerry.
Sent from my SGH-T959 using XDA App

I find that the 'auto settings' takes away from a session - screen dimming and back again. Swipe to adjust brightness seems to work fine. As far as I'm concerned, the Vibrant is running normal when usage puts Screen at 83% or so.. After all, we bought it for the display to begin with

kangxi said:
That's a good question but I highly doubt that they would add the feature if they didn't test that it actually saved power. But, stranger things have happened.
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They released the phone without doing adaquate testing on the GPS.
HTC released the G2 without turning it upside down & seeing the hinge go a flyin.
Just because they threw a feature in doesn't mean that it's been tested.
We're the testers

intruda119 said:
I have to ask what is normal use for you? Cant imagine getting 40 hrs on any device besides a BBerry.
Sent from my SGH-T959 using XDA App
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He keeps is 3G off, thats what's saving the battery. That and he probably was sleeping for 16+ of those 40 hours.

Just an FYI, I have been running my phone on automatic brightness + power saving mode for the past few days as opposed to my usual lowest brightness + no power saving mode; and usually I would get inbetween 3.5-4 hours of screen time (depending on what I did) but now I am getting 4-4.5 hours (same usage). Obviously the automatic brightness does not improve battery life over lowest brightness all the time, so power saving mode must be doing something right -- something aside from just lowering screen brightness as needed.

That is a feature of 2.1 that is intended to help people with LED backlit screens by turning off LEDs in areas that are black. We have SAMOLEDS, which are lit by pixel, and we get battery battery life by using black themes. That is why Fusion 1.1 is nearly all black, and gets insane battery life.

steel_3d said:
I have both Power Saving Mode and Automatic Brightness on, 3G off, and I get over 40 hours in normal use! I hope that tells you these settings don't drain the battery and you shouldn't worry about having them turned on.
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Actually, that doesn't tell us anything. What is your battery life like with Power Saving and Auto Brightness off?

Display is draining battery

Hi Guys,
Since I have BroodRomRC2 with Cranium v6 Kernel my battery stats are weird. It sais my display is using a lot of battery, but I have set the lowest brightness there is. I already tried to fix it by resetting Battery Stats in Recovery... What can I do?
Sent from my GT-I9001 using xda premium

It's normal having display usage around 50%, the only way to make it last longer is displaying dark images, since super amoled screens waste more battery with bright images than dark ones, 'cause we have not retroillumination but each pixel is emitting his own light. Dark/Black backgrounds, dark themed apps etc improve battery time.
Mine with heavy use is around 40%. Dark background, black themed GOsms, black gReader, and so on..
BTW, wrong section

One thing i have realised since i have switched off automatic brightness and set screen to lowest brightness. Androids own browser is using more brightness than other programs. That is one of the reasons i have started to use other browsers.

brightness setting
mal13 said:
One thing i have realised since i have switched off automatic brightness and set screen to lowest brightness. Androids own browser is using more brightness than other programs. That is one of the reasons i have started to use other browsers.
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Press the menu u'll see brightness setting. Change it. The default browser is the best

If your screen is the biggest consumer of energy it means you have a very batterysaving rom be happy with it !

Anybody else got battery drain while listening to music? (mediaserver drains about 40% when only music is on)

[Q]Display using disprportionate amount of battery

The attached images should speak for themselves. My brightness settings are at their lowest, at least the one I could find is. But still the consumption is around 80%. I lost half of my battery in three hours.
This problem started after I flashed to http://forum.xda-developers.com/showthread.php?t=1757272
I fear there is some hidden setting or something to fix this, as the screen should be a bit darker, but i have failed to find anything useful.
Edit: Got an app called "RootDim" and used it to set brightness to 1 but the screen still remains way too bright.

"Always on" and battary..

Do you think the state of the "always on " really saving battery power than normal mode ?
There is some research that ?

I suppose you are asking: is the Samsung always-on mode better than a simple application that enables some kind of always-on screen ?
My answer is: no, the Samsung's always-on display is not a special power-saving mode. It is as bad as any application that shows a screen all the time.
GSMArena battery rating for S7 Edge without always-on display is 98h, and with the always-on display is 67h. So the always-on display eats a lot of battery.
On the other hand, the LG G2 has a rating of 60h without always-on display, and 50h with always-on display, so LG has a true efficient always-on mode, while Samsung is just like a simple application.

liad1981 said:
Do you think the state of the "always on " really saving battery power than normal mode ?
There is some research that ?
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It's not saving power as it's still pixels that the battery has to power, especially since the clock and calendar has to move around the screen to prevent burn in on the AMOLED panels. While it doesn't use a lot of power, it still draws from the overall battery life of the device. If you're away from the charger for extended periods of time then i'd suggest not having always on display enabled but if you're able to plug in int the middle of the day if your battery gets low, then it shouldn't be a problem.

Yea. I thought I was going to like the AOD but I don't. For one I can definitely see an increase in battery usage and I also hate how it moves around the display. I know it's nessesary for image burn but while I'm at work, I keep my phone in a stand and every time the clock moves around the screen it makes me glance at it. Just got annoying after a while.
Sent from my SM-G935T using Tapatalk

It eats 3% per 9hrs for me on exynos. Pretty good if you ask me

It's really a question of how much you use your phone as a clock. If you're constantly turning it on just to check the time and turning it right off, then yes, it can save power because turning the whole screen on just to check the time will use more power. Otherwise, if you wear a watch or have another source of time handy (or just don't bother tracking time that closely) and only check the clock occasionally on your phone, then you're probably better off with it off.
Of course personal preference is also a factor, but I'm just talking about the so called "battery saving" logic behind it. It'd have more potential for saving battery if it showed you your notifications like the Moto AOD does.

Cst79 said:
I suppose you are asking: is the Samsung always-on mode better than a simple application that enables some kind of always-on screen ?
My answer is: no, the Samsung's always-on display is not a special power-saving mode. It is as bad as any application that shows a screen all the time.
GSMArena battery rating for S7 Edge without always-on display is 98h, and with the always-on display is 67h. So the always-on display eats a lot of battery.
On the other hand, the LG G2 has a rating of 60h without always-on display, and 50h with always-on display, so LG has a true efficient always-on mode, while Samsung is just like a simple application.
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you meant LG G5; and yes, they seem to have developed their AOD better; in fact I think that they prepared it for a longer time and Samsung just implemented it empirically (probably using a developer like the one that delivers NoLED)
sure, AOD notification in LG G5 is much smaller and less bright but it gets the job done nonetheless
on the other hand, Samsung should really put a timer for AOD (during night I cannot stop it, just replace it automatically with night clock which is dimmer) and adjust the brightness; they have enough sensors and algorithms in order to achieve that; one forum member suggested that I should just turn the phone with the back side up, but this way I cannot see the led notification in case of missed events during muted....
also, anyone can tell for sure whether AOD or night clock is is more energy efficient???