Since i see a lot of ranting going over the battery life again, i thought it would be appropriate to share this.
So after noticing how much of a difference people get in their battery lives, I've decided to do some research and make a guide-line that will give us all we need to know about properly using our batteries. First part is a general information and usage techniques for LIBs, second part is taken from Google materials on Android-powered devices (G1, Magic, Droid, Nexus One, etc).
Sources:
Wikipedia - http://en.wikipedia.org/wiki/Lithium-ion_battery
BatteryUniversity - http://www.batteryuniversity.com/parttwo-34.htm
Google IO Conference 2009 - http://www.youtube.com/watch?v=OUemfrKe65c
Electropaedia - http://www.mpoweruk.com/life.htm
General Lithium-Ion Battery (LIB) Usage:
• Discharging your LIB fully (or less than 2.4 Volt per cell) is bad for the battery. Every time you do that, it can be said that small part of your battery (some cells) dies (they forever lose their charge). Do not store your batteries depleted, there's a high chance they will die completely or will become very "weak".
• You cannot restore bad LIBs by overloading/heating/praying. You gotta go buy a new one. They DO degrade overtime, some cells naturally lose the ability to gain/give electricity.
• Although it is said that LIBs do not have memory, it's not entirely true. LIBs have gauges that monitor performance of cells, and if you do a lot of small charges, it won't let those gauges to monitor a full battery potential, causing an invalid indication of charge level. A complete charge/discharge should be made when battery capacity seems reduced, that will calibrate gauges and they will provide your phone with correct charge level status. A full charge/discharge cycle should be done every 30 (or so) partial charges.
• LIBs have a shelf-life. Do not buy them to store them. Use them early, use them often, they will die whether you use them or not. Do not buy LIBs to use them in 6 months/year/etc, buy them right before actually using them.
• LIBs have short lives (in comparison to NiCa batteries, etc). You should expect to buy a new battery in 2-3 years after being manufactured. It is caused by internal oxidation and there's nothing you can do to stop or prevent that.
• Worst LIB treatment is to keep it at 100% charge level at high temperature (think laptop/phone under direct sunlight, like car dashboard).
• Best LIB treatment, or LIBs "favorite" charge level - 40%. That's also the usual charge level you buy them with.
• LIBs don't like heat. For example, while always at 100%, typical LIB in a laptop, at temperatures of 25C (77F) will lose 20% (twenty percent!) of full capacity per year. That capacity loss is reduced to 6% (six percent) at 0C (32F), and increased to 35% loss at 40C (104F). So, keep them cool (LIBs like fridges), don't let your devices sit in the sun or overheat at charge. Also, keep in mind that while in use, battery will be significantly hotter than phone/outside environment
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• LIBs like frequent partial charges/discharges more than they like full charges/discharges.
General Android power usage advice from google:
• Although this part is somewhat controversial, they do recommend having a complete, full FIRST charge to be made. If time allows, a preferred time for the first charge is 12 hours. This may have more to do with the OS than the battery.
• Battery on a Android device, in average, will last about a full day with normal use (some videos, mail, calls). That's what you should kind-of expect.
• Speaking in averages, "idling" 3G/EDGE connection (when phone is sleeping and no data is transferred through 3G), drains almost no energy. Just a little more than having 3G/EDGE radio off completely. So when no apps are using 3G, you don't need to keep it off.
• Same goes to WiFi connection - although it's on, if there is no data flowing through it, it uses almost no energy.
• At full throughput (100% data flow), EDGE is using more energy than 3G. In average, 3G is more energy-efficient than EDGE.
• WiFi is using more energy than 3G (when both are at 100% use), but since it transfers files much faster and then goes to "sleep", it's actually recommended to use WiFi whenever possible. Since it'll "sleep" more often than 3G, overall it will use much less battery than using 3G.
• Some bad apps or widgets can use android's "WakeLock", keeping CPU at 100%, screen always-on, or both. I myself have encountered such widget (I won't mention the name, it's in the market) that used a WakeLock to keep CPU spun-up at 100% all the time. That makes a huge impact on battery life. My advice - use a CPU profiling app to monitor the CPU - make sure that CPU slows down by itself when it's not used. So, beware of such widgets/apps. To check for CPU cycles, many recommend OSMonitor (free from market, install it, go to options, sort by "Load" in descending order. It'll give you "busiest" processes at the top). At rest you should be getting about 10-20% for OSMonitor itself, and 1-10% Android System. At rest, everything else should be 0-1%.
• Android slows down CPU when not in use by itself, as a built-in feature. Apps that throttle/change CPU frequency, are not necessarily needed.
All this info comes from those reputable resources I mentioned above, I didn't make any of it up.
Note : I am just sharing this. All credits go this post.
Some points about LIB contradict the other points. Very wierd.
There's a lot of things that contradict each other. How does Edge take more battery than 3G? That makes absolutely no sense. With 3G I get minimum 7-8h and on Edge 12hrs+ depending on usage.
SuperAce609 said:
There's a lot of things that contradict each other. How does Edge take more battery than 3G? That makes absolutely no sense. With 3G I get minimum 7-8h and on Edge 12hrs+ depending on usage.
Click to expand...
Click to collapse
To be simple :
1. Therotically : Edge is slow in data transfer. So it requires the connection to be on for a larger amount of time as compared to 3g. While 3g completes the data transfer in a smaller time period. So 3g takes less battery as compared to edge.
2. Practically : If the 3g signal is weak, then the phone constantly tries to search for a better 3g tower, thus using more battery. While as the edge connection in most countries is stable (lot of radio towers).
So practically speaking, edge takes less battery than 3g.
Understood?
Don't be a noob. Be a newbie..!!
Details here.
It's not dangerous if we keep charging overnight at room temperature (Here in Indonesia, 25C is an average temperature at night, and 30ish at days) because the phone will stop charging after it reaches 100%
Sent from my GT-S5830 using Tapatalk 2
Related
Hi guys i finally managed how to root a s2 duo the dramatic battery life.
I installed the Setcpu and underclocked my s2.
But it only makes 10 hour or even less. My brother has also a S2 and his battery life goes like 2 and a half day without root just a stock rom. He uses his s2 only to whatsapp and internet browsing like hell just like me. And his batttery life is 2 days
My question how do i get that battery life like 2 days, its really annoying charging the s2 when you want go outside with a low battery.
I got also screenshot of my S2 setting and info:
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"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
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}
PS: My brothers display percent is also like 50 precent like me.
(Sorry for bad english)
so your brother uses his phone to whatsapp and browsing only?
you must be doing so much more stuff to manage to drain it in 10 hours....hell even i get 1d 12hours at least with my ICS rom
also how does he do the whatsapp thing? via 3g or wifi
we need so much more details in order to give you a decent help
the amount of apps/widgets also decrease/increase ur battery life
Download betterbatterystats and check if your phone goes in to deep sleep..
Otherwise you might have some app or something else keeping it awake all the time even if the display is off.
RorixRebel said:
so your brother uses his phone to whatsapp and browsing only?
you must be doing so much more stuff to manage to drain it in 10 hours....hell even i get 1d 12hours at least with my ICS rom
also how does he do the whatsapp thing? via 3g or wifi
we need so much more details in order to give you a decent help
the amount of apps/widgets also decrease/increase ur battery life
Click to expand...
Click to collapse
From my experience, 3G is the battery killer. When I am on 3g network I get 9 hours until the phone shuts down. THis is with email checking when it is pushed ( 20-30 messages) and about 15 minute of calls and random 4sq check ins.
When I am on GSM only, connected to EDGE rather than 3g i get a bout 1.5 days with a lot greater use.
If I am at home all day and stay connected on wi-fi, I seem to get the best battery usage.
Coming from a BlackBerry this is a bit strange as the Wi fi was the one that used to drain the battery.
My brother uses his s2 always on the wifi and outside of course the 3g signal.
semitor said:
Download betterbatterystats and check if your phone goes in to deep sleep..
Otherwise you might have some app or something else keeping it awake all the time even if the display is off.
Click to expand...
Click to collapse
I just installed betterbatterystats how can i check it if it goes too deep sleep
Check the thread in my signature. 3d battery life! Always in wifi and in 3g (or 2g if i need only whatsapp/mail).
Pako010 said:
I just installed betterbatterystats how can i check it if it goes too deep sleep
Click to expand...
Click to collapse
for checking that i recommend cpuspy much easier to verify if your phone goes to deep sleep
in BBS verify the partial wakelocks and let us know whats in the top 3 positions
and how many counts that activity contains
RorixRebel said:
for checking that i recommend cpuspy much easier to verify if your phone goes to deep sleep
in BBS verify the partial wakelocks and let us know whats in the top 3 positions
and how many counts that activity contains
Click to expand...
Click to collapse
The app is showing this infoo
Hi,
You could try a different rom aswell, there is quit some difference on battery life for the different roms out there.
Bade90 said:
Check the thread in my signature. 3d battery life! Always in wifi and in 3g (or 2g if i need only whatsapp/mail).
Click to expand...
Click to collapse
Thxx my s2 using the 100mhz more than the 500 and alsoo configurated to the info of the topic.
i use siyah kernel and voltage controle
lol the lulzcrative setting is wonderfull
Everybody thnx it sure helped to my battery drain. I flashed the kernel to the latest siyah version avaiable and then i installed voltage control and 2nd core app. And folowed the instruction topic of voltage control. Everybody thnxxx a lot.
Hi everyone
my battery never hold me a day without charging it
I use wanamlite rom 2.3.6
please how can i improve the battery life
when I am on gprs connection and the speed is slow about 10 to 25 kb/s
browsing by opera mini 2 to 4max total browsing ,usuing what's app, messaging via go sms about 100 sms send and receive,
and some othet things is that normal.
Hi everyone
my battery never hold me a day without charging it
I use wanamlite rom 2.3.6
please how can i improve the battery life
when I am on gprs connection and the speed is slow about 10 to 25 kb/s
browsing by opera mini 2 to 4max total browsing ,usuing what's app, messaging via go sms about 100 sms send and receive,
and some othet things is that normal.
Click to expand...
Click to collapse
Hi. This is rather long and I wasn't prepared as I wrote but just simply went on with every thought. Skipping to the summary, where the bold text is, is useful for the majority of people and the entire post is intended for new people though there are some things I haven't yet seen discussed here.
I was actually reading the whole thread which dates back a bit rather slowly and wanted to give some of my experience with my battery.
First off, it seems pretty typical that when a phone is struggling to keep a connection or when there's a lot of fluctuation on 3G, then battery suffers. This was something that was really apparent for me on the SGS2 since I could more easily isolate that one issue and have a look. At the same time, though, I've found that after switching to a good solid provider in my area, who has a consistency of signal and an abundance of towers etc etc, that it made far less difference than prior if I was on 3G or 2G. I think that its actually now negligible and although I haven't tested being on 2G alone since I no longer need to, I suspect that the battery savings isn't going to effect me personally as I keep full bars or close to it most of the time now. If I go back to the previous carrier then of course it would and I'd have the same problem all over again and would be pissed off and keeping myself restricted to GSM, which sucks.
Another thing that I've found, is that every phone really must be uniquely different when it comes to undervolting, setting the governer, and even more specifically just using a custom kernel opposed to a stock kernel, or for root and CWM, one that's compiled as stock with the root goodies added by Chainfire.
I really should break this into 2 separate things.
To simplify the last paragraph, its commonplace, for example with intel or AMD processors that they might all get the same production line process but that there's such a narrow margin for error, that what's deemed acceptable for various speeds and voltages are then labeled as differant processors when they go to market, so the 3 ghz version of a processor is often the same factory result as the 1.5 ghz version and there just happened to be limitations put on the 1.5 ghz version afterward so that it simply could not go any faster as it wasn't the best batch of cookies to come out of the oven, or perhaps the L2 or L3 cache didn't turn out on one batch so part of the thing gets zapped off by a laser and marketed under a differant name.
Getting to the point, there's a lot of custom kernels and various threads about how to get the most out of these kernels. For some people this is the gold nugget but in my case it happens to be that if I want to be rooted and have the best power management while pulling adequate benchmarking numbers then the smartest thing I can do is just stick with the kernel that matches my phone that Chainfire has compiled. As I understand it he uses the same configuration file and complier options as Samsung (or gets as close as he can to it), and adds the components needed for the rooting process.
Since I'm not very smart, and have tried to save battery using Siyah various times with various settings of my own and posted by other people, only to find that my phone's personal temperment is to drain faster, I still continue to try other things and most recently the Red Pill kernel.
While trying a variety of settings with Red Pill last night and benchmarking over and over again, I found that quite simply there's a lot going on which effects the performance of the benchmark score, but even more importantly, and this took a while to notice, that undervolting to levels that didn't by any means cause crashes did not mean better battery or better benchmarks. Where it did benchmark better I found that in my case there can be a huge placebo effect because the in between scores aren't getting looked at as much, for example if I undervolt too much at 500 800 and 1000 then my phone tends to not even use those steps as much and the obvious result of this is going to be too much jumping straight from 200 to 1200 even if I'm just screwing around and flicking the home screens back and forth. This obviously will not save battery. Further to that, I felt that although the GPU can handle a larger undervolt at both settings and a larger undervolt at the lower one, that my phone's performance was much better when both of those things had less of a gap, both in speed and in voltage and went less aggressively there as well. I still have the Red Pill kernel installed and think I have reasonable values however it took quite a lot of testing, hours of it, and the jury is still out and for the most important reason as it applies to my phone which is as follows:
When I first got the phone there was a lot of talk about calibrating the battery. There's apps that will wipe a file (yes I know this is very repetitive for a lot of people but I'm writing it for those that are new) that has to do with battery calibration. You can also do it from recovery in CWM. The file will also get wiped sometimes by something you flash, for example cleaning scripts, some kernel installs might do this (I'm not sure if its wise or necissary when using a new kernel or ROM; I leave mine alone now unless something else does it).
I spent a lot of time trying to get better battery life by calibrating my battery the "proper" way, when it was completely charged, and even when it was just about to die entirely. This has always been not only fruitless, but counterproductive. I've read that the file gets deleted automatically when the battery is full and the power cable is unplugged but I'm skeptical about that as I've found that I get quite noticeably better (significant in my case) battery life when I leave it alone and let it do its own thing for at least 3 charges. That doesn't mean discharging it entirely 3 times, but that just using it as normal a few times brings it into its own all by itself. Calibrating the battery seems (to me) to actually screw this up which means another few times of use before I'm even with a clue of how a kernel (new ROM or custom kernel) is going to be on the battery.
To summarize my experience:
- Custom Kernels appear great for some people but every chip on every phone is differant. In my case sticking close to stock has been the way to go. The best I have so far done is adjusted the conservative governor to be a little snappier than default. I quite honestly got very irritated at one point at all the kernels that pop up and all the settings threads because I expected that I was going to have the same experience as other people were reporting.
- Undervolting sounds effective in theory, but its important to look at how your phone uses various frequencies according to your habits and make sure you haven't fallen into a sitiuation similar to mine where undervolting resulted in me skipping up a frequency to quickly and thus using more power. Additionally, reducing the gap between my voltage values and the gap in the frequencies I had created with my GPU settings resulted in better performance and specifically less work for the CPU.
- Battery Calibration may or may not have its place when it comes to new ROMs or Kernels (I don't know), but Calibration in general is not something the phone requires and further to that (in my observation) just makes it drain faster for a few recharges. The longer I don't calibrate it, the better.
I was at one time not pulling a full day out of my phone. Today, admittedly with the samsung 2000 mah extendable battery though, which is 20% more juice, I can pull 24 hours (as a low number to use) with 5 hours of screen time (also a low number; its more like 6 hours screen and more than 24 hours but varies depending upon how I've used it). When I first got the thing I was calibrating a lot and 5 hours of screen time I don't think would have been possible at all. If you think your phone is a lemon, you may very well just need some patients with it. I have had my original battery in it and using it more patiently as well, and although it wasn't long enough to give out accurate numbers I knew that it would have been just fine had I had to continue using the original battery.
One last thing, I typically freeze wifi sharing and Samsung's email and so forth but have noticed in more recent ROMs that these additions are getting to be more and more negligible. I would unfreeze wifi sharing if I thought I would ever use it.
A final thought for benchmarking is to look carefully at how you use your phone first, in respect to what voltages are used most often, then adjusting each frequency individually. If I undervolt too much at my top frequency then the phone doesn't crash, but it also doesn't score as well. It may be better to find the ideal spot by doing each frequency seprately and individually, then worrying about how things scale, as previously mentioned.
I've found that I get quite noticeably better (significant in my case) battery life when I leave it alone and let it do its own thing for at least 3 charges. That doesn't mean discharging it entirely 3 times, but that just using it as normal a few times brings it into its own all by itself.
That is the correct method battery recalibrates itself .The stats play no part in the calibration process or how long a battery lasts .
https://plus.google.com/u/0/1050519...dVxPT#105051985738280261832/posts/FV3LVtdVxPT
jje
Hi,
Ive never had problems with my battery until recently. I decided to try new ROMs and kernels. I was on DonutHD with stock kernel since it came out but recently I changed to FeraKernel 3.6 and Feral_V22_Marvel ROM. I noticed that my battery died very very quickly even after being charged for all night. Like on standby it would only last 5 hours.
I thought it might be the ROM, so I reflashed and formatted. This time I flashed DonutHD back but kept Ferakernel. Again after full charge, the battery died after 4 hours of standby. Im not even using it. What is causing this? How can I fix it?
I would like to mention that I have checked my battery with battery health applications and all of them say that my battery is in good condition and does not need replacing.
Is ferakernel responsible for this? It cant be as a LOT of people are using it here..
Thanks
Anything is possible.
I just started testing my XPERIA X10i standby time just for a laugh.
So far on standby with 16hrs on battery, it has used 2%. The phone has an active SIM and approx 160 applications installed, including email, calendar and provider updates for different services.
Last time I did a pure standby test, I had three days up and about 70% battery remaining... then I watched a 1hr video or something. and that was the end.
To get long standby times you have to understand a few basics.
If you have the original XPERIA X10i battery you have a Li-Po battery. Most phones now have Li-ion
Your need to know what is using your battery and when.
Google Play: GSam Battery Monitor
You need to verify your phone is going into deep sleep when the screen is off or the CPU is not being actively used(running as a media server).
Google Play: CPU Spy Plus
You need to have profiles to under volt the CPU when the screen is off and/or profiles matching applications if high CPU clocking is required.
You need to find the sweet spot for minimum clocking and being able to recover and come out of deep sleep without FC or hanging the phone.
Some Kernels and ROM don't play nice with low voltage and deep-sleep.
You need to understand your CPU and the governors/schedulers you're using.
[GUIDE] CPU Governors, TCP algorithms, Android Tips, & IO Schedulers: In my Own Words
And lastly, you need you understand the applications you're running on your XPERIA X10i and what background process there are running.
For example Google Latitude and background data processing is a recipe for disaster when it comes to battery life.
And lastly(before the last lastly) you need to know what is bringing your phone out of deep-sleep when the screen is off and you're not using it.
Even basic Android battery history has the Awake column which if it's just a solid line... you're in a whole world of hurt.
And the other thing is, this is only the VERY basics of battery optimization.
The following is my XPERIA X10i after doing nothing for the last 16hrs.
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
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"lightbox_stop_slideshow": "Stop slideshow",
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"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
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}
farazk86 said:
Hi,
Ive never had problems with my battery until recently. I decided to try new ROMs and kernels. I was on DonutHD with stock kernel since it came out but recently I changed to FeraKernel 3.6 and Feral_V22_Marvel ROM. I noticed that my battery died very very quickly even after being charged for all night. Like on standby it would only last 5 hours.
I thought it might be the ROM, so I reflashed and formatted. This time I flashed DonutHD back but kept Ferakernel. Again after full charge, the battery died after 4 hours of standby. Im not even using it. What is causing this? How can I fix it?
I would like to mention that I have checked my battery with battery health applications and all of them say that my battery is in good condition and does not need replacing.
Is ferakernel responsible for this? It cant be as a LOT of people are using it here..
Thanks
Click to expand...
Click to collapse
You might install CpuSpy and check whether the phone goes into deep sleep. If it doesn't then it may be some app causing the high cpu usage. Else, if the deep sleep works and the battery lasts only 5h You might have damaged battery. The programs won't show it. Also one question: does Your phone shut down by itself when using more power, like: video recording, trying to play some better game?
Dr Goodvibes said:
Anything is possible.
I just started testing my XPERIA X10i standby time just for a laugh.
So far on standby with 16hrs on battery, it has used 2%. The phone has an active SIM and approx 160 applications installed, including email, calendar and provider updates for different services.
Last time I did a pure standby test, I had three days up and about 70% battery remaining... then I watched a 1hr video or something. and that was the end.
To get long standby times you have to understand a few basics.
If you have the original XPERIA X10i battery you have a Li-Po battery. Most phones now have Li-ion
Your need to know what is using your battery and when.
Google Play: GSam Battery Monitor
You need to verify your phone is going into deep sleep when the screen is off or the CPU is not being actively used(running as a media server).
Google Play: CPU Spy Plus
You need to have profiles to under volt the CPU when the screen is off and/or profiles matching applications if high CPU clocking is required.
You need to find the sweet spot for minimum clocking and being able to recover and come out of deep sleep without FC or hanging the phone.
Some Kernels and ROM don't play nice with low voltage and deep-sleep.
You need to understand your CPU and the governors/schedulers you're using.
[GUIDE] CPU Governors, TCP algorithms, Android Tips, & IO Schedulers: In my Own Words
And lastly, you need you understand the applications you're running on your XPERIA X10i and what background process there are running.
For example Google Latitude and background data processing is a recipe for disaster when it comes to battery life.
And lastly(before the last lastly) you need to know what is bringing your phone out of deep-sleep when the screen is off and you're not using it.
Even basic Android battery history has the Awake column which if it's just a solid line... you're in a whole world of hurt.
And the other thing is, this is only the VERY basics of battery optimization.
The following is my XPERIA X10i after doing nothing for the last 16hrs.
Click to expand...
Click to collapse
Thank you for your detailed response. My battery did last longer than the last time and I dont know why It lasted only 5 hours. Maybe something was keeping it awake. What I want to know is what? I think if I notice this next time I will try to find out using the applications you mentioned.
I did install the advised applications and here are the results. My Deep Sleep time is much lower than yours.
It's hard to know in your case as you're actively using your phone.
For the purpose of testing, my phone is in standby and not being used at all other than viewing stats, capturing screens, moving screenshots onto my NAS and basic house keeping including 'normal' email and etc background processes..
If the on screen time parallels the awake times, then that would not indicate a problem. It's only when you're not using the phone and you see excessive usage, that may indicate a problem.
Your 68% sleep time considering your active use is not bad.
Do you run an active 3G/WiFi network connection all the time?
This only encourages background processes to maintain there active links and thus use processing time.
So are you running FB, Twitter, social media, news feeds and etc 24/7?
The CPU governor and clocking you use on a given ROM plays a major part too.
GSam Battery Monitor does display processes that are holding the phone awake and how often.
Just be aware, that all these monitoring applications take up resources too.
So over one and a half days and I have 89% battery left.
Just as a note, the following is what the phone signal code colours mean.
rustamabd said:
Soo... to visualize this better, here's the color table:
████████ : radio off
████████ : no signal
████████ : signal strenth 0
████████ : signal strenth 1
████████ : signal strenth 2
████████ : signal strenth 3
████████ : signal strenth 4 (Excellent)
Click to expand...
Click to collapse
The Problem is definitely not with Fera's Rom or kernels....its with the phone or the apps you use.....
After clearing the problem you can also consider this if you want more battery backup....... 1800mAh mugen battery for x10 (gives good backup time)...
srinivas103 said:
[extract]After clearing the problem you can also consider this if you want more battery backup....... 1800mAh mugen battery for x10 (gives good backup time)...[extract]
Click to expand...
Click to collapse
And if you want proof of that, just look at my battery stats as I have a Mugen Power 1800mAh battery installed.
Remember though, the battery is only as good as the applications and configuration you are running.
Bad application configuration/setup/use = bad battery life.
My battery is now at 4d 10h and 22%.
Note - I got bored waiting for the paint to dry and started touching it. :laugh: The last 50% of battery life consists of AnTuTu v3.1.2 benchmarks, application install/modification, monitoring, configuration changes and system reboots.
I've switched to the M4 from the Moto E 2015. Both phones are set up just about the same.
The E had amazing battery life, easily going 2 days between charges. When not in active use it barely used any power, and even during use it was pretty efficient.
The M4 is also very good at staying asleep when the screen is off.
However, during even the lightest active use, such as Web browsing, even with screen brightness turned way down, the thing just gulps the battery down. Every 2-3 minutes it goes down 1%.
Are you having this experience too?
.
On WiFi I once got 5 hour screen on time. Not sure how. I used it to browse Web and do other basic stuff like YouTube.Likely depends how demanding the task is.
On Lte/Data battery drains way faster.
Yes, this has been a major concern for me. I hate the battery of this phone.
I went from the M2 to the M4. The battery was waaaaaaaay better on the M2. If the M2 had about 7% battery going to bed, my alarm would DEFINITELY go off the next morning, and I would have 5-6%. It was great, so reliable. I charged it around every 2 days. I used it for all normal functions including web browsing, music playing, emails, messaging etc.
If my M4 has 7% battery going to bed, the alarm will not go off, and the phone will be dead. That's absolutely guaranteed every time. I HATE that. I really do. It has been years since I've been so dependent on having chargers around. I swore that I would not return to a phone that I had to charge every day.
What I really don't understand is on GSM Arena, their review says it has an even better battery life in lab tests, than the M2. Not in my case.
http://www.gsmarena.com/sony_xperia_m4_aqua-review-1249p3.php
I use all the battery saving techniques that are available. I had the same set-up on my M2. It's not how I use the phone, or how much, or the battery saving, it's the phone.
Something else to consider, is that we've seen from Samsung and Apple that the same model of a phone can have different manufacturers. The same two models were not necessarily made with all the same parts. Mine is the 06 version, the Americas. I bought it in Canada.
SharpnShiny said:
Yes, this has been a major concern for me. I hate the battery of this phone.
I went from the M2 to the M4. The battery was waaaaaaaay better on the M2. If the M2 had about 7% battery going to bed, my alarm would DEFINITELY go off the next morning, and I would have 5-6%. It was great, so reliable. I charged it around every 2 days. I used it for all normal functions including web browsing, music playing, emails, messaging etc.
If my M4 has 7% battery going to bed, the alarm will not go off, and the phone will be dead. That's absolutely guaranteed every time. I HATE that. I really do. It has been years since I've been so dependent on having chargers around. I swore that I would not return to a phone that I had to charge every day.
What I really don't understand is on GSM Arena, their review says it has an even better battery life in lab tests, than the M2. Not in my case.
http://www.gsmarena.com/sony_xperia_m4_aqua-review-1249p3.php
I use all the battery saving techniques that are available. I had the same set-up on my M2. It's not how I use the phone, or how much, or the battery saving, it's the phone.
Something else to consider, is that we've seen from Samsung and Apple that the same model of a phone can have different manufacturers. The same two models were not necessarily made with all the same parts. Mine is the 06 version, the Americas. I bought it in Canada.
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Battery life is amazing only when it's not connected to wifi or data. Otherwise I totally agree with you. You can delete much of the bloatware and that helps a lot
I don't know what you guys are doing with your phone but I'm getting insanely good battery life on wifi
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I'm going into bed with around 60% of battery left after day with normal usage
That is ridiculous! I want that! Let's swap our phones please!
Yeah, I wonder if the Americas version got some different parts? Maybe the screen? Who knows. But, Samsung and Apple users have had this discussion, then found out their identical phones were not made the same. Hmm.
I've flashed different firmware over time and I don't see any difference there either.
Update - Actually, a thought has come to mind. Two of you have mentioned that you use wi-fi and are happy. I mostly use data, not wi-fi. I wonder if it's the Snapdragon chip? Burns heavily on the battery?
i have not any problem with battery life...
I use the original 1.100 firmware (the phone came with the crappy .99)
3g singal all the time, data not active (expect perhaps for about 30-40 minutes), wifi active.
Well I was just browsing the web a little bit and I spotted two seperate reviews of our phone which both say the battery is inconsistent and that 4G is the battery-burner. I was right!
Confusingly, the M4 Aqua’s battery performance was very inconsistent. On Wi-Fi, we could be browsing the web or playing games for twenty minutes and only lose a few %. However, when on 4G, we saw drops of up to 15% in just half an hour of use. If you’re willing to be a little cautious with how you use your device, and you don’t insist on intensive use while off Wi-Fi, you could probably manage two days.
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http://www.trustedreviews.com/sony-...ery-life-and-verdict-page-4#tr-review-summary
During my time with the handset I found that generally the battery life was good – though uneven. Some days when moderately using the M4 Aqua for phone calls, texts and checking emails regularly, I'd end the day with the M4 Aqua still retaining an impressive 60% of its battery life – which means it would be easily capable of two day battery life.
However throw in some web browsing – both over WiFi and 4G – and the battery depletes much quicker, with a drop of around 20% after 15 minutes of browsing. So the M4 Aqua does do a fair job of holding onto battery life when used in certain circumstances, but not so well in others.
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http://www.techradar.com/reviews/phones/mobile-phones/sony-xperia-m4-aqua-1286091/review/4
I knew it couldn't just be me! I do use 4G primarily. I knew it!
So...I buy an iPhone tomorrow. Last of Sony. (not because of battery).
my 4g is always off. just dont need that kind of speed when im outside. 3g is enough for me mostly coz its not a battery hog like 4G
I was just wondering if you guys use manual or adaptive brightness. I used to use adaptive but when I turned it off for a while I saw my battery life was dramatically affected. I went from 7-8 hours of screen on to less than 5. Also, there is a severe drop in my battery when I start using the screen. Today I was using my phone lightly throughout the day and listening to some music. When I got home, my phone was at around 50% and I started to watch some youtube video on Wi-Fi. After about an hour my phone had dropped to 15%. I don't know if this drop in battery life is just due to me now using my phone with a brighter screen. I also use twilight filter which I'm not sure if it affects the battery life. I have the E2303
I wondered my self that question and its seems that general consensus over the internet is no, however i made my own research and i saw there are couple of studies and the truth is - YES, fast charging reduce battery life and maximum cycles it can do. Quote "Charging and discharging Li-ion above 1C reduces service life. Use a slower charge and discharge if possible. This rule applies to most batteries."
So you should not use fast charge on a daily basis and only when you need it urgently. I also would not recommend wireless charging too. Use the good old charging cable. Hope this information is helpful.
Sources:
Link
Link
nauvho said:
I wondered my self that question and its seems that general consensus over the internet is no, however i made my own research and i saw there are couple of studies and the truth is - YES, fast charging reduce battery life and maximum cycles it can do. Quote "Charging and discharging Li-ion above 1C reduces service life. Use a slower charge and discharge if possible. This rule applies to most batteries."
So you should not use fast charge on a daily basis and only when you need it urgently. I also would not recommend wireless charging too. Use the good old charging cable. Hope this information is helpful.
Sources:
Link
Link
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In my opinion of coarse
A cellphone battery is no different than any other battery the slower you charge it the longer it seems to last cycle wize .
Kinda like the deep cycle batteries for marine usage I know lead and lith ion...
But in the automotive world We call a fast charge like this a surface charge.
Which isnt good for long life and or true voltages and or amprages....:crying:
But that aside the extra heat generated by quick charge is in my opin not good either....
Nor the heat from wireless charge.....
others say the heat is negligible vs the shorter time on the charge but again I do not like to quick charge my self as I put it on when I goto bed there is ample time for my device to charge through the night....My battery makes it through the day wonderfully...:good:
I have done a whole lot of battery studies and such and yes it does affect over length of life.
But in the end the battery will fail either way the ions will no longer flow between positive and negative poles and the decay process
started the minute they made the battery
But also you have to decide if you will have the device long enough for it to matter....
As most trade it in for newer or sell online So dont rob yourself of great features either.....:good::good::good:
TheMadScientist said:
In my opinion of coarse
A cellphone battery is no different than any other battery the slower you charge it the longer it seems to last cycle wize .
Kinda like the deep cycle batteries for marine usage I know lead and lith ion...
But in the automotive world We call a fast charge like this a surface charge.
Which isnt good for long life and or true voltages and or amprages....:crying:
But that aside the extra heat generated by quick charge is in my opin not good either....
Nor the heat from wireless charge.....
others say the heat is negligible vs the shorter time on the charge but again I do not like to quick charge my self as I put it on when I goto bed there is ample time for my device to charge through the night....My battery makes it through the day wonderfully...:good:
I have done a whole lot of battery studies and such and yes it does affect over length of life.
But in the end the battery will fail either way the ions will no longer flow between positive and negative poles and the decay process
started the minute they made the battery
But also you have to decide if you will have the device long enough for it to matter....
As most trade it in for newer or sell online So dont rob yourself of great features either.....:good::good::good:
Click to expand...
Click to collapse
Totally agree with you, it really depends on the usage and purposes from the user for the device. In general i don't like non removable batteries but unfortunately there is no flagship phones with removable batteries anymore so sad
I have read an very detailed article on batteries and its seems that slow charging between 20 to 80% can greatly improve the battery life, for example assuming you charge your phone once per day (24h) charging it to 80% instead of 100% can improve the battery life from roughly 2 years to 4-5 years which is dramatic difference. See the chart below.
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Also temperature affect battery life tremendously too, chart below.
By the way, is there any app that can monitor Battery and CPU temp and set alarms similar to GSam battery monitor but with option to record full history and backup data in the cloud? I'm curious to see how will my battery hold and change in a year period for example.
Thanks for the infos guys, can only support your opinion. My HTC 10s battery was reduced in performance greatly after 2 years...i charged it every night with HTCs quick charger. So i killed it myself, i just figured it out too late. Now for my S9+ im using a slower 2A charger and only charge it every second night. Hope that will save me some battery life on the long term. Samsungs charger is my mobile option i keep in my backpack if im on the go.
There seems a lot more heat generated by the device compared to the 25w. Is this normal or will it degrade the battery over time?
If you're using your phone while charging and it's heating up with 45w that's normal. You just don't want to overheat the battery where it explodes.
Just use the 25w charger for safety. You don't need a note 7 situation
It happens because you are charging at a higher rate. The funny thing is that with the 45W charger, you are only charging at 30-32W at most (from 0% to ~60%, after that it decreases to the same as the stock charger), compared to the 23-25W of the standard charger. The heat can cause accelerated wear on the battery, so there is not much benefit in using the 45W charger. The only time I find it useful is when I don't have time and need to pump in 10-20% before I leave the house.
Try not going below 40% or charging beyond 80%, 90% max.
Periodically charge through most of the range and at different percentages to avoid a known Li memory effect.
LI's love short, frequent charges; you can glean hundreds, even thousands more full charge cycles by doing this.
•Do not charge if battery temp below freezing!!!
•Best battery temp is above 80F to avoid Li plating which permanently degrades the cell.
•Limit charge max temp to 101 F, much above this will slow the charge. Use air or a damp microfiber cloth to reduce temp. If you limit the charge to between say 45-65% it will charge fast and cool.
Li's degrade faster from high temp and high cell voltage.
You can easily control cell voltage not charging over 80%, 65% is optimum for longevity.
20% charge in this range takes 10 minutes and should be good for about 2 hours.
•Do not use the phone while charging as it disrupts the charge cycle and it will charge much slower.
So take a 10 minute break and give your battery a break too...
blackhawk said:
Try not going below 40% or charging beyond 80%, 90% max.
Periodically charge through most of the range and at different percentages to avoid a known Li memory effect.
LI's love short, frequent charges; you can glean hundreds, even thousands more full charge cycles by doing this.
•Do not charge if battery temp below freezing!!!
•Best battery temp is above 80F to avoid Li plating which permanently degrades the cell.
•Limit charge max temp to 101 F, much above this will slow the charge. Use air or a damp microfiber cloth to reduce temp. If you limit the charge to between say 45-65% it will charge fast and cool.
Li's degrade faster from high temp and high cell voltage.
You can easily control cell voltage not charging over 80%, 65% is optimum for longevity.
20% charge in this range takes 10 minutes and should be good for about 2 hours.
•Do not use the phone while charging as it disrupts the charge cycle and it will charge much slower.
So take a 10 minute break and give your battery a break too...
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Information all very well and good, BUT, the S20 range are not fitted with Lithium Ion batteries, they are fitted with Lithium Polymer (LiPo) which don't suffer memory effect.
jonboi said:
Information all very well and good, BUT, the S20 range are not fitted with Lithium Ion batteries, they are fitted with Lithium Polymer (LiPo) which don't suffer memory effect.
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My bad... you are correct.
Good news; all the more reason to good with short midrange partial charge cycles
https://www.hindawi.com/journals/tswj/2015/979321/
Accubattery app does a great job helping me extend battery life. It lets me get an alert at my chosen preset charge level so that I can stop at, say, 80%. While it's not intrusive, forcing me to learn all the minutia, it monitors more than charger state, but also battery wear condition, how much battery wear each particular charge session is putting on it. Each app screen helps educate me on how's and why's of best practices for battery longevity, with dynamic data on my practices over time. I highly recommend it. Free and premium versions; only costs about $4 - $5 one-time.
PS: Stay with me here... 1 week now w/my S20+ is my first Sammy since S4, and am shocked to learn that Bixby Routines are awesome (in spite of basic Bixby redundancy with Google Assistant)- I've been a fan of automated Routines with my phones for years, and I set up a Bixby Routine to run Accubattery as soon as phone begins charging, and the app gives me alerts when I've hit 80% so I can shut it down. (I have created a few other choice Routines since)
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Wileyworld said:
Accubattery app does a great job helping me extend battery life. It lets me get an alert at my chosen preset charge level so that I can stop at, say, 80%. While it's not intrusive, forcing me to learn all the minutia, it monitors more than charger state, but also battery wear condition, how much battery wear each particular charge session is putting on it. Each app screen helps educate me on how's and why's of best practices for battery longevity, with dynamic data on my practices over time. I highly recommend it. Free and premium versions; only costs about $4 - $5 one-time.
PS: Stay with me here... 1 week now w/my S20+ is my first Sammy since S4, and am shocked to learn that Bixby Routines are awesome (in spite of basic Bixby redundancy with Google Assistant)- I've been a fan of automated Routines with my phones for years, and I set up a Bixby Routine to run Accubattery as soon as phone begins charging, and the app gives me alerts when I've hit 80% so I can shut it down. (I have created a few other choice Routines since)View attachment 5184931
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Accubattery runs in the background so the battery % charge alarm works even if the app isn't open and the screen is off.
However I'm running on Pie ... Q isn't as friendly.
blackhawk said:
Accubattery runs in the background so the battery % charge alarm works even if the app isn't open and the screen is off.
However I'm running on Pie ... Q isn't as friendly.
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Try app settings menu/tips and help/"disable task killer detection". Turn on that switch. So far no killing of the app for me!
PS: I'm on Android 11, One UI 3.0, T-Mobile install.
Wileyworld said:
Try app settings menu/tips and help/"disable task killer detection". Turn on that switch. So far no killing of the app for me!
PS: I'm on Android 11, One UI 3.0, T-Mobile install.
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Same here. Plus on Pie (at least) the milliamp screen overlay works.