I recently got this phone, mainly because it's the most developer-friendly phone (once S-Off is achieved) which supports MirrorLink.
Although I've heard great things about this phone's battery life, I'm kind of disappointed with the battery being used up while I'm not using the phone. I'll go into more details.
I'm a very light user most of the time. I have had my phone on right now for 15h, 16m, and the screen's only been on for 14 minutes. The battery is at 82%
On my iPhone, I usually get home from work with 95%+ charge left. The amount of charge left on my iPhone varies basically with how much I used the phone, but with usage as light as mine, I barely use 5% a day. This phone, though, despite not being used, seems to drain at least 25% each day.
The major users according to battery stats are the phone radio and the android kernel.
My assumption is that the way Android handles push notifications is different from iOS, and that must be why my iPhone simply doesn't drain on standby. But does anyone have an M8 that behaves better on standby, with notifications on? Or does anyone know the exact reason for this 0.7~1.5% per hour battery drainage and a way to stop it?
Since I can usually charge the phone every night, it's not too big of an issue, but it does bother me that it drains regardless of usage. Any info would be greatly appreciated.
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Has anyone experienced this. I used my phone heavily for about 1.5 hours at which point it said that I had about 50% battery left. i then left it untouched and unplugged for about 8 hours overnight and when i picked it up int he morning it was at around 50% still and the battery details showed this. seems like after i stopped using it, the battery started charging rather than discharging until I picked it up again.
I'm on stock with an extended battery.
I'm not complaining, just trying to see whats going on.
I've seen this happen as well when going from heavy use to no use over night or when put in airplane mode.
should ask in the Q and A forum....not development....
not only is it the wrong forum...but you will get more answer
The reason for this is due to how the phone displays battery usage statistics. You phone will periodically check the phone usage and determine battery life based on your current usage amount. So if you talk on your phone for an hour straight, during the time your phone will figure how much battery you have left based on that usage. If you then don't use it for 8 hours, your battery level indicated by the phone can actually go up, or stay the same for a very long period of time. Thats why your battery will drop very fast when you start to use it when it has not been used for a while.
It looks like the SOC (state of charge) algorithm is using the derivative of current (consumption over time) in conjunction with the open circuit voltage, yet taking little regard to cell temperature.
As current consumption is decreased, the cell temperature will eventually decrease and the open circuit voltage will slightly increase. This is where the SOC difference comes from.
This is a common problem with any SOC algorithm that doesn't precisely factor in the cell temperature. With these lithium cells being as small as they are (compared to what's used in Automotive applications) trying to characterize the cell temperature characteristics would be like nailing jello to the wall.
akilestar said:
The reason for this is due to how the phone displays battery usage statistics. You phone will periodically check the phone usage and determine battery life based on your current usage amount.
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My thoughts are right along these lines. The phone is projecting your remaining battery life based on previous usage. It is forcasting what your usage will be and with no usage over a certain time period it is reporting negative numbers which send your patterns in a different direction.
Definitely feels temp related. I used mine heavily in a real bad signal area (Restaurant with a tin ceiling...) and it got really hot. I noticed battery life down to 48%. Put it near a fan to cool off and 5 minutes later it was at 65%.
Not positive on specifics, but it has to do with voltage fluctuating.
I have been noticing something strange. I have gotten in the habit of draining my battery down to single digits before charging in an attempt to keep my battery life up. I usually use netflix on 4g to do this as it does a pretty good job of sucking the juice down quickly.
A few times I have noticed that after I shutdown netflix and let the phone sit a little while that the percentage actually goes back up. For example, I kill netflix at 4% battery left. I set the phone down for a bit and when I pick it back up the battery is at 10%. I have seen this multiple times.
Just curious if anyone else has noticed this and anyone has an explanation for why this happens.
I believe it has to do with the battery meter displaying how much battery you have left based on what you are doing? So when you stopped being resource intensive it adjusted itself.
That's one explanation I have heard.. there is also one that has to do with the amount of current going to the battery.
Sent from my Galaxy Nexus using xda premium
trevoryour said:
I have been noticing something strange. I have gotten in the habit of draining my battery down to single digits before charging in an attempt to keep my battery life up.
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I can't answer your question directly as there could be multiple reasons. (Battery capacity estimation is tricky business, and I don't know what algorithm they're using.)
But I can tell you that the common belief that one ought to discharge batteries before recharging them is not applicable to modern lithium batteries.
I was (to some extent) true for old-fashioned NiCd cells, but modern Li-ion cells shouldn't be excessively discharged. If you want to prolong battery life it's more important to keep the battery cool. (Lithium cells degrade much faster at elevated temperatures.)
(To contradict myself I have to add that the battery capacity calculation can be improved by discharging the battery completely from time to time - but again, this depends on the battery capacity calculation algorithm they're using.)
I understand the way current battery tech works. The discharge is not for the battery itself. Its for the Android OS. I have noticed that whenever I plug my phone in in the middle of the day, the next day my battery doesn't last as long. In fact the poor battery life will remain an issue for about a week until it levels itself back out. I have noticed this behavior on multiple phones by multiple manufacturers.
You end up going in a circle. You use heavy data one day and as a result you have to plug in in the middle of the day. The next day your battery doesn't last as long so you plug in again. Unless you allow your phone enough time to level back out then it will always appear that your battery life is aweful. Since i've been discharging my battery I am able to unplug my phone at 7:30 am, use it moderately all day with GPS, Bluetooth, 4G on/wifi off with a live wallpaper running. At 11:30pm when its time for bed I still have around 60-70% battery remaining. I find myself having to watch a few hours of netflix on 4g in order to drain the battery so I can plug it in.
I'm not sure if this behavior is a result of an issue with the battery stats file or what but I do know that when I flash a new ROM it appears my battery life is reset to how it was before I had shortened it by plugging in the middle of the day.
many of us have seen the percent rise slightly, its normal. when under heavy load watching videos or something and then you are finished, the voltage gets relaxed and pops up some. since this phone uses some type of voltage calculation to determine percent, it will jump up once in a rare while, typically right after you placed it under heavy load then went to idle.
it's normal..
Hello everyone! I just switched to my first Android device and am truly enjoying the experience. I can't believe I was using an iPhone for so long. I finished draining my battery for the first time and recharged it and am draining it again. My phone indicates that the screen is consuming around 66-70% of the battery drainage while everything else is quite low such as the Android OS taking up about 12%. Is this typical and does it improve over time? Thank you for your help.
this is normal but seems like that is pretty heavy use. if your phone was barely used then that is not normal.
I am going to further diagnose this. I have my brightness set to auto. I wasn't really using the phone that much. I flashed it to the yakju build and it is running 4.0.2. Is there anything I should do to test the phone?
what is your screen on time
I'm looking at
9h 56m on bettery
Android OS 33%
Phone Idle 30%
Cell Standby 22%
Screen 9% (on time 9m)
Wifi 5%
Google Services 2%
This is after the phone being nearly untouched most of the day, no calls or texts and nothing being done but checking my email once not too long ago. It's on Auto-brightness which sucks because it appears to be on the darkest setting but without that my battery seems to go from full charge to 50% in 1-2hours with moderate usage (Browsing the web, Checking email, Browsing Market, few phone calls and texts) and it sucks that I feel like I cant play with the phone because it'll be dead when I need it and without Auto-brightness the battery dies even quicker.
Almost feel like I need to be tethered to the charger.
dev/null/ said:
I'm looking at
9h 56m on bettery
Android OS 33%
Phone Idle 30%
Cell Standby 22%
Screen 9% (on time 9m)
Wifi 5%
Google Services 2%
This is after the phone being nearly untouched most of the day, no calls or texts and nothing being done but checking my email once not too long ago. It's on Auto-brightness which sucks because it appears to be on the darkest setting but without that my battery seems to go from full charge to 50% in 1-2hours with moderate usage (Browsing the web, Checking email, Browsing Market, few phone calls and texts) and it sucks that I feel like I cant play with the phone because it'll be dead when I need it and without Auto-brightness the battery dies even quicker.
Almost feel like I need to be tethered to the charger.
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you either have really bad signal and/or 4g and/or a process keeping the phone awake, in your case the high cell standby time suggests the first two
This seems common for the lte version. The gsm version gets very good battery life especially idle drain. Turn off lte is your best option.
knowran said:
Hello everyone! I just switched to my first Android device and am truly enjoying the experience. I can't believe I was using an iPhone for so long. I finished draining my battery for the first time and recharged it and am draining it again. My phone indicates that the screen is consuming around 66-70% of the battery drainage while everything else is quite low such as the Android OS taking up about 12%. Is this typical and does it improve over time? Thank you for your help.
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Assuming you have the screen on a lot then yes. Those big beautiful screens are hard on a battery.
If you're on the LTE version using 3G only you will get around 3 hours screen on time MAX.
GSM version you will probably get 3-4 hours screen on time per charge.
Ok so after a hard reset and at 100% charge my HTC Radar says 1 day and 15 hours remaining. It has been like that for a few days. After about a week, 100% charge results in 20 hours remaining life. Eventually after a few more charges it averages at 15-17 hours remaining battery life. That is a big worrying decrease. These figures are always noted after a 100% charge and leaving it to settle for a bit.
So I started thinking what could be causing this decreasing stand by time?
Two theories:
1. It must be an app as I got excellent stand by time from a hard reset and with no additional apps so maybe a particular app is playing with the battery meter?
2. Could it be leaving the phone over night plugged in is doing something to the battery? Maybe I should unplug it as soon as it gets to 100%?
The strange thing is it can't be the actually battery degrading over time as the phone is new. Also, I have recently flashed a custom ROM to my Radar at a point when stand by time was at 15 hours at 100% and after the flashed ROM the standby time went back up to 1 day and 15 hours. Something is not right. It must be an app.
Any other thoughts/theories or anyone else in a similar situation?
Discuss please so we can all learn something to hopefully solve this problem for other handsets too!
My guess: calibration. The system estimates your runtime based on previous runtimes, that's why it's getting lower. Did your phone actually ever run that long, btw?
yes it did. very very close. i was amazed.
and does it now actually run out faster? I have noticed this on my ipod. It used to tell me 1h battery remaining and it would run for another 3h until i got home and another 2h the next day (when I noticed I forgot to charge). Also, are you using your phone more now? The biggest battery drain is the display.
Remaining battery life is estimated as follows:
Immediately after being removed from the charger is based on previous usage charging.
After this time estimate is based on current consumption.
In the first week after hard reset or install ROM the period are recorded in the system.
After a year of use of personal phone (HD7) and trying different rom and different settings for gps, 3g, edge, and light i found that the consumer eating large battery . After a more detailed study will say that is the main consumer.
Thanks for your comment Ovi but this is not about how the consumer is wasting the battery by usage. The question I raised was about how the standby time varied at 100% after a hard reset and after weeks of usage at 100%. The stand by time decreased without using the phone after a full charge. That is what is puzzling me. In theory it should be the same stand by time no matter how long the phone has been owned and the rate of discharge is due to usage - agreed.
Hi guys,
I've recently bought a Nexus 5X. Naturally it came with Marshmallow installed. When I turned it on it was at 19% and I've used it for a couple of hours and the battery charge barely dropped, I was even concerned that there might be an issue with either the battery, or the phone reporting the charge properly (it just looked too good to be true).
I've charged the phone and updated to Nougat. It seems like the battery is discharging rapidly. I've followed tips like never let the phone go under 10-15% and charge for 2-3 hours longer, after the phone reaches 100% for the first few charges. Now on its 4th charge it still drains rapidly fast. When I use the phone (adaptive brightness off, I'm using it at 20% brightness at the most) and the battery drains really quickly and it looks like the screen is at fault. When I play something it's ~1% per minute or two, which is awful. Here are some screens:
It seem like I don't have enough posts in order to be able to post links in my threads, so the phone's charge is currently at 27%, the screen has used 22% of the battery - Time on: 2h 58min / computed power use: 567mAh
As a comparison my crappy old Sony M2 Aqua (I know, I know...) for the same battery usage by the screen I can see more than 7hours "Time on". I know we're talking about different devices, Android versions, screens, etc, but it still looks like the battery of my Nexus 5X is draining a lot faster than it should.
I must admit that the battery barely drains when the phone is at standby (locked screen).
So is this a software issue with the new OS, or a faulty screen, or battery or something else? I'm really freaking out guys, please shed some light on this if possible.