Simply put, my battery seems to be able to go above 100% displayed charge. Metrics included. There was no variability in the testing: exact same brightness, pretty much the same sequence of actions. The phone was in airplane mode, so no variance from that end. The device is a 2 month old p765.
The two cases I tested: firstly, charge up to 100, unplug the moment I hear the notification, and use. Second case, charge for 30 mins beyond that notification, then use.
100 - 99%; in case I, it took 41 seconds. in case two, it took 7:26 minutes.
99-98% - case I, it took 1:58m, in case two: 2:20 seconds.
Note that I have previous re-calibrated the battery through draining it. I've been having battery issues where even while reading an ebook @ 75-100% brightness on Aldiko causes it to drain at approximately 1% per 3 minutes. There isn't much beyond the stock lg stuff, which i've trimmed somewhat, active on the phone.
So, is this normal? (I hope not.) My first 'smartphone' and I'm seriously underwhelmed by the 2150 battery.
Related
My S740 is now coming up to one year old. For various reasons I have had 2 batteries for the device which are both of a similar age.
Anyhow, normally I get a full days use out of a battery however on a very busy day I may end up changing to the 2nd battery around 5pm.
In recent weeks, every now and then the battery will be dead after only a few hours even under light use. After a full charge, it is fine again giving full days of use.
I have checked there are no programs running in the background etc and can't see any pattern to this.
This happens when using either of the batteries and is really annoying.
So if this random discharging a sign of the batteries failing or something more sinister? Has anybody else seen similar things? I am happy to buy a new battery but at £30 don't want to then find the same problems again
Thanks
I've only been using this phone for about a month now and agree the battery can be quite erratic!
I don't think it's anything to with the phone 'failing'. I've had quite a few smart phones and to be honest it just seems to be common practice for these types of phones to have a strange battery life.
Some days from a full charge I can get up to 2.5 days! Other from a full charge it will run down completely in under a day.
I'm going to invest in one of those extended batteries, the battery capacity on those is more then double that of the standard battery. Sure it adds a bit more bulk to the phone but I kind of like that, will turn it into a proper beast!!
My phone's battery-life is also erratic (and limited anyway).
Always was, but with me also more now after a year.
For me it feels a bit soon for a failing battery. Normally in my experinence with Li-ion batteries, they work well for over 2 years.
Often I can relate the bad battery-life with extensive use (calling, internet), but sometimes it's almost empty overnight with 75% at the start of the night.
I suspect a non-linear decline of the presented battery-capacity is one of the causes: while decreasing it falls faster.
In my experience it stays quite a while above 80% and after the 20% warning I only have a few minutes calling-time left.
First of all, let me say thanks to Scott for all of his work on CleanRom. I know there has been a lot of discussion lately in his thread about battery usage. Some people are getting outstanding battery life and some people can't make it more than a few hours. I have been one of the people that can't make it more than a few hours no matter what I do. I did a clean wipe of everything before installing the ROM and have even tried to reinstall. The odd thing is my wife's phone does fantastic with this ROM. I finally decided to test things side by side lastnight. My phone should have had the clear advantage because I turned off all syncing options and froze any apps that had been downloaded just to make sure there was nothing running. Meanwhile, her phone syncs like crazy to facebook, email, etc and also has various apps running like weatherbug. I let them both sit overnight and after ~9hrs here are the stats I measured:
Battery % left : 79% (mine) vs 88% (hers)
Data used overnight: 75kb (mine) vs 744kb (hers)
Time awake: 3min 32sec (mine) vs 9 min 42sec (hers)
Time in Deep Sleep: 9hr 19mins (mine) vs 9hr 6min (hers)
Everything points to the fact that I should easily have more life left than hers. I am also attaching a couple of screenshots and the betterbatterystats files to this post. Maybe we can track down why everyone's battery life is so different. Tonight I plan to swap batterys between the phones to try to determine if my battery is the problem.
wow that's pretty good on your wife's phone but horrible for yours especially considering you turned off syncing.
I agree. I have no doubt that her phone could easily still be at 95% or more if I made all of the same adjustments to hers as I did to mine. That is why I am hoping someone on here with more knowledge about this stuff can help to determine what is going on.
It honestly might just be a faulty battery, I was having similar results with mine and my friend's phone, too. I tried multiple ROMs, Kernels, etc. But it slowly got worse and worse to the point that I would go down from 100% to 60% in little over an hour, doing nothing but listening to music with the screen off and auto-sync etc off. I bought a replacement battery, though. And this one is working just fine. You might just be having bad battery luck, or it might be your device, I know some people have returned their Rezounds because of battery life/heat problems, and the replacement generally fixes their woes.
so what did your betterybattery stats report?
Thanks for running this test. It would be very helpful to everyone if you could pinpoint this to a battery difference and I'm waiting to hear your results after the battery swap.
What helped my battery life most was to uncheck the box under "settings -> applications -> start automatically" It has something to do with a task manager. It probably wouldn't explain why your wife's phone does better but it could help both of you get better battery life.
bik- The betterbatterystats file is attached. I see a lot of activity on her phone but very little for mine. The only thing that stands out to me is I have alarmmanager waking my phone for 10 mins and she had it waking hers for only 5 mins. I am not sure exactly what alarmmanager is though.
HTGaming- Thank you for the suggestion but I have already done that as well. I think I have literally turned off everything possible on this phone because it is driving me nuts to burn through battery like this. My OG droid used to us 30% in a day max and now I burn through that in an hour if I am using the phone for anything at all. Pretty much the only thing I had running on the phone lastnight was 4g service which her phone also had.
Another thing you can do to compare the two phones is to install battery monitor widget to see what the drain is on the phones. I used to have decent battery life but ever since the update, it's been worse. The one thing I noticed is that now my phone draws more current when sleeping than it used to. The drain is consistently close to 300ma, whereas before it would be less than 200ma when sleeping.
You have to have the widget on for the monitoring to be active unless you change the preferences.
I swapped the battery's lastnight and here's the results. Hers is still clearly better than mine even though betterbatterystats shows way more activity on her phone again.
Battery % left : 84% (mine) vs 90% (hers)
Data used overnight: 279kb (mine) vs 498kb (hers)
Time awake: 5min 32sec (mine) vs 12 min 8sec (hers)
Time in Deep Sleep: 7hr 58mins (mine) vs 7hr 59min (hers)
Someone posted that they saw different PRIs on phones even after the OTA. Do your two phones have the same PRIs?
damnn thats just weird
Im starting to think that some Rezound batches are differently tweaked than others. My first Rezound had great battery, I would stream music for 5-6 hours on 4G and would still be above 60%. My last two however were completely horrible, on 4-5 hours standby it losses closed to 20% with lil to no use. Same settings/apps as my first Rez. I regret returning my first Rezound, it truly was the perfect phone.
There really has to be a reason why some come with a 3.8 V bat. opposed to a 3.7 V. HTC wouldn't just send out two different types of battery for no reason.
You are missing 1 key info in your analysis, which people always seem to leave out when talking about battery life. The screen on time. I see in in the graphs but it's hard to tell the exact number. Because of the 720p screen on our phones, that makes a big difference. When my screen is on, the phone uses up at least 600 ma/hr. That is conservative, usually it is more like 700-800. We'll assume 600 for now. That's 10 ma/minute. Based on the stock battery, that is 0.6% per minute. So having a difference in screen on time of 10 minutes will give you 6% difference in battery life.
i am also unable to go for even most of a day on one battery charge - and i have 3 extra batteries that were from ebay that dont work even that long...
i do notice it when the screen is on the most - yest i used the gps for an hour and a hlaf without plugging the phone in and my battery lasted about 3 hours after that and died....
very bad....
very interested to see if its the phone or not - great work...
I'll try to answer a couple of questions in here. I got very frustrated yesterday so I flashed an ICS rom to see how my phone did with it. It is equally as bad. This morning, I got into work with 97% life, checked my email for about 2 mins and was already down to 90%. I have the screen display set to 30% brightness too. I am amazed that people can used 2-3 hours of display and still have 70% battery after 10 hours. My screen at 30% brightness probably drains 2% per minute. I think tonight I am going to try to install one of the stock RUU's just to check and see if the OTA upgrade possibly didn't install itself correctly.
HTGaming - I will check the PRI's tonight.
Bluesnake - Both phones were purchased the same day so I would guess they are from similar if not the same batch. Both have 3.7 batteries. Infact when I first got my phone, I could have display on auto, sync everything every half hour, use the screen for random browsing throughout the day and still go home with over 70% left. Somewhere along the line my phone has developed some sort of draining problem though and no amounts of clean installs seem to fix it.
b5fan - Both phones were off the entire night. I think screen usage was maybe 10 seconds for both of them. They literally just sat there on the nightstand while we slept and mine drained 2x faster with nothing running while hers ran facebook, email etc.
I checked the PRI on both phones and they are the same. I re-ran the stock RUU tonight so I will see if that makes any difference. I highly doubt it will but I am running out of ideas.
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
Sent from my ADR6425LVW using Tapatalk
b5fan said:
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
Sent from my ADR6425LVW using Tapatalk
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The screen time was probably just from me getting all of the data off in the morning like the screenshots and battery stats. Her email was on push and my email was set to not sync at all. Basically she had a fully functional phone and mine was set to do nothing which is why the battery drain is so hard to explain.
I did run the stock RUU image lastnight for my phone. I put it in airplane mode overnight and it was at 97% when I got up which is a huge improvement. I took it off airplane mode at 6am today and when I got to work at 7am, it was down to 90% so I guess I am in wait and see mode now. I have no email accounts/facebook accounts/ or anything else setup right now. It is only the stock image so there should be nothing draining battery today.
I can confirm the phone is no better now after the clean RUU install. Let it sit overnight and it was down to 80% this morning. I did not even setup any email accounts or download any apps yet. This is just the stock image from verizon.
So, on every new tablet I get I like to see how much I can squeeze out of it when I travel. So, with my test I have a movie loop until I feel I have an accurate calculation OR I run the battery down completely. I play the video in moboplayer, in airplane mode, with OS screen brightness all the way down, and moboplayers built in brightness at 10%. This is what I typically watch movies at while flying. It is well watchable as the lights are almost always off while flying these days.
So, I decided to run the same test on the note, as I am hoping it will be a tablet replacement.
25 minutes in - 97%
61 minutes in - 90%
93 minutes in - 84%
120 minutes in - 79%
152 minutes in - 73%
180 minutes in - 68%
181 minutes in - I fell asleep.
Its looking like I can squeeze over 9 hours out of this thing watching movies/tv while traveling, which is awesome since most flights I take are 3-5 hours which would leave me some juice left over for when I land. I think I could get even more if I used setcpu to keep the cpu down to 700mhz - ish. The only tablet I have had that competed was the iconia tab a500, which I was about to get almost 11 out of.
I thought this info may be useful for those considering ditching their tablets and using their phone to watching movies/whatever on while traveling.
Wow, thanks! I bwrely get a day with my infuse, so the note should easily last it ha. Thanks, makes the battery life sound even better
See the tl; dr part of this post...you'll easily get close to 10 hours, maybe more, in flight mode and with the screen brightness way down.
(you want the second screen shot...the first is an aftermarket crap battery)
http://forum.xda-developers.com/showpost.php?p=23055521&postcount=17
hausman said:
See the tl; dr part of this post...you'll easily get close to 10 hours, maybe more, in flight mode and with the screen brightness way down.
(you want the second screen shot...the first is an aftermarket crap battery)
http://forum.xda-developers.com/showpost.php?p=23055521&postcount=17
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Wow, nice post - quite a bit more detailed than mine!
I have been using my AT&T Galaxy S II for a while now, and I have run into a bit of an issue. I had been able to optimize my phone's battery to last almost 26 hours, but I don't even mind not getting that. I wouldn't mind even 20 hours at a charge. The problem is that I get intermittent times when my phone barely lasts 13 hours, even when doing nothing on it. Anyone got any thoughts??
Take a look in Settings>About Phone> Battery Usage. It should tell you what is sucking the juice.
You might want to look at what processes are running in the background too. You may have wifi/GPS/BluTooth enabled on those days... So many possibilities. Haha! Good luck!
*I also found this post over in the General Forum: [REF] Known identified battery drainers
This has almost everything to do with how you use your phone, and the conditions of your environment. If signals are weak, or you are checking email a lot, or getting a lot of texts, battery life can easily cut in half. Doing battery tests in a proverbial vacuum are the only way to really be certain, but they never represent actual use.
If you can get about 1 hour of screen time per 10-15% of your battery, you're fine.
If you can get about 1 hour per 1-2% of your battery during screen-off standby, you're fine.
Hello, new guy here. Thanks for having me here.
Did a search for the issue, but none thread found comes close. I did an update on Monday (24.03.2014) OTA to 4.3. Of course it failed - forgot to do factory reset before that so what I got was famous samsung screen with blue LED on. Long story short, managed to recover. I had all the usual after-update-battery-drainage issues, but after tweaking and forcing shut a lot of stuff it is much better. Except for screen.
When I use phone with screen on, the battery level drops almost visibly. I would estimate it at 1% for 1.30 mins. What's more - when I use Google Maps Navigation in my car, the phone loses charge even when plugged to the charger (old trustworthy TomTom USB, rated at 1000ma). Slow - about 1 percent for 7-8 minutes, but still. Oh, and phone gets very hot then. With screen off (power button or automatic off after 30 sec) the battery life is awesome and it charges like a sponge. even with constant H/H+ internet connection, audiobook player with headphones on and of course phone services. Comparing to "before update" its much better. Of course it may be due to lot less freeware (read: adware), but it is better.
However, screen is a killer in this deal.
60 hrs uptime, 15h 15min on battery, 47% of it screen usage. Next is Device Idle with 13%. During that time screen was up about 5h total, of that 3h while plugged to charge. I also went through two audiobooks totaling 20 hrs, browsed net (heavy with the downloads - 3gb total) for 2h, used Kingsoft Office for 2h and navigated with google maps for about 4h, did about 3.5h calls, emails check every 10 min (just headers), some texts and camera. All times approximated, but fairly accurate.
Phone is 1,5 years old, is and always was stock. Bought in UK, used in UK, locked with H3G (Three).
Does anyone have some advice? Tips? Tricks? suggestions? Much appreciated.
Thanks,
Adam
What you have is normal, you need a new charger is all and probably a new battery. 5hrs screen on time from a full battery is the best you can expect..
boomboomer said:
What you have is normal, you need a new charger is all and probably a new battery. 5hrs screen on time from a full battery is the best you can expect..
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Thanks for quick reply.
Well, since my SGS3 is 16 months old I would say that max screen for me would be bit less than 4h. Battery was used and abused (had message about it being too hot for charging a few times etc.), but right now it is more like 2h on scree time. And NOT charging while navigating is new. Started right after update. And this not charging issue is of supreme importance. I've a roving job over quite large area so I'm driving a lot. And sat nav is a must. And since it's draining battery even on charge it worries me as phone is used extensively - technical chats, calls, online and offline documentation etc.
Anyway, will change the charger. Battery... Have half a year till end of contract, so will think if I need the expense.
Oh, one more thing. On Monday my SanDisk 32gb SD died - that's why I updated. Wasn't sure which gave. I had unexpected unmount message with this card. Could this issue use more battery as well? different card now.
Thanks again.
Sd card issues will drain battery. Charging stops when the battery reaches 50°C so if you are navigating and don't point an air vent at the phone it will overheat and stop charging.
Batteries last six months before capacity is reduced, after 16 months you will be lucky to have 50% the original capacity, less if it has ever overheated.
boomboomer said:
Sd card issues will drain battery. Charging stops when the battery reaches 50°C so if you are navigating and don't point an air vent at the phone it will overheat and stop charging.
Batteries last six months before capacity is reduced, after 16 months you will be lucky to have 50% the original capacity, less if it has ever overheated.
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Oh, that I know. I'm hard on batteries, but not in phones. None of my phones ever had failed battery pack, but laptops... all of them. But that's not the issue.
Battery is essentially low energy chemical reaction, so obviously it will be degrading. No issue there. That's why I'm not shooting for max parameters and not worried about it, especially since update phone lasts more. Waaay more.
I changed chargers and it's the same (I have two more never used TomToms and one Tortoise rated at 2 Amps). So i'm starting to think that the issue is not batter, charger etc. I think Google Maps on navigation (which uses simultaneously Screen, GPS and internet) also goes on max on CPU and GPU. that's why tere is overheating and not enough power for everything.
So it looks like software issue. Google maps in particular. Do another factory reset? Everything is up to date. Or maybe I overlooked something?
Partial solution found
Hi all,
Sorry for late update, but was out of the country and all that.
Thanks for suggestions. They were useful to solving most of the issues.
First, changed cables, not chargers. cleaned also contacts in the socket of the phone, so battery gets charged well and fast all the time. And is even better after couple of cycles of full discharge/full charge.
Probably because of having less "apps for free" it is simply phenomenal - normal sync (incl. emails), normal gsm, heavy music listening - takes about 5-7% of battery charge per hour, depending on signal strength. It is much worse when working with screen on, but still good - about 5-6 hrs of gaming for example.
There is still issue of excessive battery drain while using google maps, but this may be software issue. will be uninstalling/reinstalling it soon. Should help.
Will inform on that one as soon as status changes.