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Hi
Has anyone tried the NoLed app on SGS2. This is an app that simulates a LED indicator.
The display technology on AMOLED screens is suppose to be highly efficient since each pixel is individual lit. Furthermore, the black areas on the screen are where the individual pixels have been turned off. That is why the Samsung skin makes use of such a lot of black areas.
The idea behind NoLED is that when you have a missed call it will display a small number of lit pixels on the screen….again, because it is an AMOLED screen over 99.9% of the screen can be turned off….so the device should only be using a negligible amount of power.
However, I have noticed that this app consumes a lot more power than it should. If I get a notification during the night I notice that the whole of the screen is very slightly lit….you would not normally notice this….I only did because it was night time.
Furthermore, I have noticed that the graph of the battery usage declines significantly after this point.*
Anyone else got any thoughts?
*
Sent from my GT-I9100 using XDA Premium App
Have been using it since day 1. I don't see it as a big power drainer. Whether I have notifications or not, I tend to lose 5-10% depending on how much display on time I have.
I have it on for 15 min or so. So it shouldn't drain the battery if I don't check it for a long time like during the night. CM has a great feature/tweak that lets you choose a time that the screen never goes on. Just have to wait a bit longer for it.
I just bought this phone yesterday and I must say, it is an amazing phone! I like ICS way better then HTC Sense. Anyway, I set it up the way I want it and turned off a few features to save battery life (Pulse notification, brightness at 20%, etc.) and I noticed after a full charge, the process Screen is at 70+%. Not sure what more to do interms of brightness, but I put everything to low yet is still is at 70%. Any help with this? I also did an update when I first got the phone, not sure if that would of caused it or not though.
I've attached a picture of my processes. Display is sitting at 70+% and it's only been off the charger for maybe 10 minutes and already down 4%.
Seems absolutely normal. You have minimized the amount the other parts of the phone use battery and thus the screens share increases. Try playing some cpu intensive games and the screen percentage will decrease
During time and more normal usage your screens share should decrease to about 50 %.
The battery usage monitor gives information about the past, not about what is currently using battery.
Lol. It's normal. That is actually a good sign.
My grandma beat me down and took my nexus. Sent from a jitterbug with beats by dre.
Lol what exactly do you need help with?
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Ah, my mistake, wasn't sure if it was normal or not. Its gone down to roughly 50%, so pretty good
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Look at it this way.. your battery is at 96%, so 4% of your battery is used. Of that 4%, 70% was used by the screen, so 4 * 0.7 = 2.8% of the total battery.
Makes sense since you probably just took it off charge and haven't done anything except wake it up and look around the menus.
Also, hold volume down + power button for a screenshot.
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alsex87 said:
Also, hold volume down + power button for a screenshot.
Sent from my Galaxy Nexus using XDA App
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Very cool!!! Thanks for the tip This phone is so amazing!!! The phone has been on for over five and a half hours, with extensive use of Facebook, making a few calls ranging from twenty minutes each, and the phone is at 63%!!! UNBELIEVABLE!!!
Hey, has anyone noticed their battery meter saying a low percentage and then seeing it increase after not touching the phone for a while? ive noticed my phone will say 2% for example and ill let it sit for a while and when i check it again its all the way up to 10%. I have calibrated the battery but it doesn't affect it and it still happens?
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
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elliwigy said:
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
Sent from my SPH-D710 using XDA
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Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
FWIW, I've experienced this a few times. My battery has increased as much as 5% without being charged and that's in one string. For example, my battery may go down to 50%, then over the next 20 minutes go to 55%, then an hour later 42% and rise up to 45% and so on. Not sharp spikes either, steady gradual increases.
elliwigy said:
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
Sent from my SPH-D710 using XDA
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No, it does not work like that.
Battery app re-calculates the remaining battery based on the battery power currently being used (mV) and history. That's why we are doing the calibration to correctly measure the current battery status and range of it.
In most case, battery power (mV), it goes down from the top and it usually up & down within a small range but for overall, it goes down.
But sometimes, the current mV is goes up and it's caused by
1. Battery usage forecast was wrong or
2. Battery is recovering its power again - for example, after CPU intensive task, the voltage could goes up
3. the remaining percentage goes up if the battery usage is slower than the expectation (it's not going up because it's not being used. Even the screen is off, the battery is still being used). In this case battery app recalculate the percentage based on the current mV and trend that how fast battery mV is decreasing. If mV is increasing, then battery app will show like it's being charged...
There are couple of more things that we also consider in here but I think this is enough information to know.
Update: Let me add a couple of more.
From OP's screenshot, it shows that there's big drop in battery percentage. Usually, big drop happens (battery power is decreasing so fast), it's really hard to calculate the exact remaining percentage because battery shows some irregular pattern after that kind of fast drop. So, some point of time, battery app recalculate the percentage based on current voltage. That's why it's showing going up.
One more case is, the pattern change. After big drop and/or voltage is about the same (stay almost same), then battery app also adjust the remaining battery level indicator.
Simple example) Just like Human. I just finished eating and fully charged. After a meal, I worked so hard and almost exhausted. No power left. But after a little break, I could recover my power a little more.
This example is not exactly same but it would be more easier to understand.
I have noticed this. Could it be that after the battery runs out the phone puts itself in a low consumption mode, thus the battery cools down, increasing the efficiency of delivering power, thus increasing the apparent voltage available? This would be similar to putting the battery in the fridge to get a litte bit of extra juice...
Sent from my SGT10.1 using XDA Premium
Its just the phone reading the voltage wrong, the calibration is outta wack.
qwerty12601 said:
Nope, it actually doesn't make sense.
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Makes complete sense. There is no accurate way to judge the potential energy stored within a battery. Changes in temperature are one of many things that effect the chemical availability of energy.
Little shifts in measured overall capacity and current charge change all the time on every device you own. Most of them do not update to reflect this, some dont update in the wrongest way. My ASUS gaming laptop doesnt report new full charge capacities to windows and now more than ever with the battery being half shot i can hit 150% but it always did this from new sometimes would show it had stopped charging at 98% when it reached full capacity or 101%.
I can explain the software aspects of the problem. But you will need an electrical engineer, chemical analyst to help you go over the batteries end of it. I of course am not familiar with Android in particular but Portable PC's Sony's PSP etc seen it everywhere.
Its due to a flaw in Samsung phones where it does not correctly read the battery. Sometimes a phone reboot will show as much as a 70% (from my experience) in battery but then my battery will start to "charge" itself as the phone reads the voltage better. I've seen this happen on our phones and the captivate
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qwerty12601 said:
Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
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Click to collapse
you have no idea how mechanical measuring works, do you? here is an example of how gas is measured; a floating ball attached to an arm changes the voltage of the signal depending on the amount of fuel in the tank. Higher the ball, higher the voltage, and thus higher the gas gauge.
Consequently, you will notice fuel gauges reading higher going uphill and lower when going down, because gas doesnt just sit in one place. The gauge is usually calibrated for when the car is standing still.
Now that you have an idea how mechanical measurement works, can you apply this to battery chemistry? NO, because they are completely different!
Battery life is measured using a formula, not a mechanical device. It is, in essence, a best guess. Some formulas are better than others, but they are all still estimates. And you will notice fluctuations.
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rianbechtold said:
Hey, has anyone noticed their battery meter saying a low percentage and then seeing it increase after not touching the phone for a while? ive noticed my phone will say 2% for example and ill let it sit for a while and when i check it again its all the way up to 10%. I have calibrated the battery but it doesn't affect it and it still happens?
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i had the same thing happened to me, and i have the pic somewhere.. where the battery just dropped from like 80% to 30% in less then 5 min.. i was using it, and had the screen off, and had it on again.. and it went down like crazy.. and afterwards.. it started to go up, as if i was charging the phone..
some one said that, its a bug by samsung, where if you charge your phone not quiet to 100% and use the phone, this can happen..
concerning what some other guy said about turning the phone off and on, can boost batery power.. that was hilarious sad..
likkkkkke thisssss?
first one is recent.. second one is from one of the initial ics leaks..
Or this freak
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Somairotevoli said:
Or this freak
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Um or not lol. Considering you have charging in there
RainMotorsports said:
Um or not lol. Considering you have charging in there
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Or yes as you can see it clearly (or in your case, not so clearly) going up at points it's not being changed
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Somairotevoli said:
Or yes as you can see it clearly (or in your case, not so clearly) going up at points it's not being changed
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However very much expected. You have created a circumstance where accuracy was guaranteed to be off. Making sure that multiple corrections were a reality.
I would hope that in a 2 day period you had 3 to 4 hours to sleep where this phone could have reached 100% twice and only been on the charger about 4 times. Obviously a couple very busy days for you. I could guess any number of occupations that might have done this to you
Sent from my SPH-D710 using Tapatalk
That looks almost as if to suggest the sampling did not occur at all while the phone was sleeping.
turbomeister said:
you have no idea how mechanical measuring works, do you? here is an example of how gas is measured; a floating ball attached to an arm changes the voltage of the signal depending on the amount of fuel in the tank. Higher the ball, higher the voltage, and thus higher the gas gauge.
Consequently, you will notice fuel gauges reading higher going uphill and lower when going down, because gas doesnt just sit in one place. The gauge is usually calibrated for when the car is standing still.
Now that you have an idea how mechanical measurement works, can you apply this to battery chemistry? NO, because they are completely different!
Battery life is measured using a formula, not a mechanical device. It is, in essence, a best guess. Some formulas are better than others, but they are all still estimates. And you will notice fluctuations.
Sent from my SPH-D710 using Tapatalk 2
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Now that you've got that out of your system, let me explain it a little more simply so you understand.
It was an analogy. I never said that battery percentage was calculated the same way as fuel capacity. But it's an analogy to help you relate.
Batter percentage is a measure of volume of power left in the battery. It should never fluctuate UP without being charged, unless something is wrong with the battery/phone. 55% is 55%, no matter what temperature, usage time, current usage is. If the battery is 1800 mah, then 50% battery level means there's 900 mah left. It's not a calculation of anything else. Just like if your fuel tank hold 16gal, and the needle is at 1/2 (stationary of course, not parked/driving up or downhill as you needlessly pointed out), you have 8 gal left. There's no mathematical calculation needed there.
Just for reference, I own no other electronic device that magically increases in battery percentage. My laptop goes down unless it's being charged. It's a quirk/flaw with the system in the phone. Plain and simple.
BTW, no apology needed. I'm just happy to educate you!
Didn't you know? Our device's covering is actually made of solar panels
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qwerty12601 said:
Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
FWIW, I've experienced this a few times. My battery has increased as much as 5% without being charged and that's in one string. For example, my battery may go down to 50%, then over the next 20 minutes go to 55%, then an hour later 42% and rise up to 45% and so on. Not sharp spikes either, steady gradual increases.
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My gas guage goes up when i park uphill.
How to set my display to lower my
Battery to drain slower???
...like u see I always on between 56-65 %
.my brightness is set lowest
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I set mine to 50-75% when I'm indoors, when I'm in the sun I have to bump it up to 100%. I don't notice much battery drain from normal usage, only with games and video, they normally drain batteries really fast. I don't play any games only some YouTube or videos I took.
kola2121 said:
How to set my display to lower my
Battery to drain slower???
...like u see I always on between 56-65 %
.my brightness is set lowest
Sent from my SGH-T989 using Tapatalk 2
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If you go to settings then power saving, you will see custom power saving settings you can then adjust how to same battery including the option for brightness.
I always keep mine at full brightness and I've gotten killer battery life. My phone averages 3-4 hours screen on time. Of course I can make that stretch 5 hours or one whole day. Depends on how much you use your phone of course.
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I'm starting this thread for us to share ways to have to the best battery life
Sent from my Samsung Galaxy 2
Another one?
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My phone lasts a really long time when I keep it plugged in.
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RTFOP said:
My phone lasts a really long time when I keep it plugged in.
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Haha mine too
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Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
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cpnfantstk said:
Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
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Fully draining a lithium ion battery will significantly decrease it's lifespan. Any positive effects you see from this are probably not measurable, or scientifically reproducible. Your other tip is solid, disabling data (or using an app to do so) greatly increases battery life. As well as turning down the brightness.
daveid said:
Fully draining a lithium ion battery will significantly decrease it's lifespan. Any positive effects you see from this are probably not measurable, or scientifically reproducible. Your other tip is solid, disabling data (or using an app to do so) greatly increases battery life. As well as turning down the brightness.
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Had no idea this practice decreases lifespan of the battery. Good to know. I thought the this resets the phone ability to recharge the battery to the fullest. That's what I thought. I seem to be getting some benefit.
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cpnfantstk said:
Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
Sent from my SGH-T989 using Tapatalk
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Great tip. Thanks
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- Juice Defender
- Llama to automate a myriad of things related to power savings
- Darkside Venom kernel
- Badass / noop
- 1134/192
- CPUSleeper
- inverted apps for almost everything that I use heavy.
That's what I can think of right now.
Typically get ~5 hours "screen on".
That could be 12 hours or 2 days between charges.
Kent
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cpnfantstk said:
Had no idea this practice decreases lifespan of the battery. Good to know. I thought the this resets the phone ability to recharge the battery to the fullest. That's what I thought. I seem to be getting some benefit.
Sent from my SGH-T989 using Tapatalk
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Battery lifespan for lithium ion batteries is measured on how many cycles its been through (hits 100%). If you go from 90% to 100%, you just used up a battery cycle. Even 99% to 100% counts as a cycle.
The method you described in your earlier post is for conditioning your battery, it works on older batteries but is not needed for lithium or poly lithimer batteries.
Tips for battery life, disable radios and keep screen dim. A dark wallpaper helps too, white screens are a battery drainer!
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Get a app that disables other apps that start up on system boot-up or other events. Autostarts its a good app I use. As you all should know dont use app-killers unless u know how and when to use them (READ). Like said keep ur screen dim or on auto if u have that issue like me were ur constantly going in n out at work and find ur phone too dim for daylight. The darker your themes the better battery life. Remember that ur screen is one of the top (if not the top) battery drainers. Data, wifi, gps, bluetooth, auto-sync, running widgets, live wallpapers...if you dont need it on or could live without it, then either turn it off or get rid of it.
Also like said before, lithium-ion batteries dont suffer from memory effect like older rechargable batteries. If you could avoid it, dont run ur battery all the way down. Be free to charge ur battery as often as possible and that way you extend the life of ur battery.
Sent from my Blutiful Hercules.
Use the lowested sync frequency setting you can or manally sync. Wifi tether guzzles juice. Live wallpaper is a killer. Make task killing a subconscious reflex. The smaller the number is next to "running in background" also makes for more time away from an outlet. Of course these may not help any one else, but it works for me
Fully charge 2 batteries. Unlimited talk and text. True story
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I run the ParanoidAndroid 2.51 rom (10/24) with the KKO kernel and it goes pretty good so far. It may be the first day of using it but I will expectedly average 20hours of use on it. (using the live wallpaper phase beam the whole time). Used the wheatly governor with SIO and changed the max cpu to about 1028 so its only using 1Ghz. (seem to get decent battery life)