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Battery life and Charging time

I've owned the Samsung Focus S now for 12 days. I came from an android bionic. I have owned Windows Phones before, the Venue Pro and the Hd7. But this is my first Samsung.
For the first few days, the battery life was fine, a full day. But this past week I find my self hard pressed to reach a full work day. I don't play music during the day nor do I have many, if any calls. Mostly SMS and internet.
I've turned off as many background tasks as acceptable, limited the number of live tiles, set brightness to auto, and check email off of push. Yet this morning I reached 20% in about 8 hours.
In addition, I find the time to charge is extremely long. It might take 4-6 hours to fully charge from 80%.
Is this normal for a Samsung?? My other windows phones, and my bionic certainly do no present the same battery problems as this one does.
Thoughts, or is this usual?

Do you have wi-fi turned on? This is a real battery burner...
My Focus S usually goes through about a day and a half before I need to recharge. That's with a few phone calls, some messages, a bit of wi-fi browsing at night, etc. Email only gets checked every hour but it's on 3 different accounts.

drtolson said:
Do you have wi-fi turned on? This is a real battery burner...
My Focus S usually goes through about a day and a half before I need to recharge. That's with a few phone calls, some messages, a bit of wi-fi browsing at night, etc. Email only gets checked every hour but it's on 3 different accounts.
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while I'm home WiFi is on. Away from home its off. This is normal behavior for all my phones. All of them last at least 18-24 hrs, under the same condition.
Took it back to art. They said , lets try a different battery. I'm willing to try it for now.

I just wanted to add to this as I seem to be experiencing a similar issue.
I purchased my phone at the end of Dec, it's been great.
Now, since around a week ago I've been having issues. I used to get roughly 2 days use per charge and it used to charge quickly.
Now, the phone runs hot, the battery drains in 6 hours or less, and it takes many hours to recharge.
I turned off the one app running in the background. I turned off wi-fi. It doesn't seem to help. The battery itself doesn't seem to be too hot, but it's hard to judge.

tinyiota said:
I just wanted to add to this as I seem to be experiencing a similar issue.
I purchased my phone at the end of Dec, it's been great.
Now, since around a week ago I've been having issues. I used to get roughly 2 days use per charge and it used to charge quickly.
Now, the phone runs hot, the battery drains in 6 hours or less, and it takes many hours to recharge.
I turned off the one app running in the background. I turned off wi-fi. It doesn't seem to help. The battery itself doesn't seem to be too hot, but it's hard to judge.
Click to expand...
Click to collapse
I did a factory reset, and got a new battery. I then reinstalled less than half of my existing apps. In addition I've set my display brightness to medium.
Battery life has doubled, and the charging is much quicker.
Read an article yesterday about ads in free apps eating about 35% more battery. Who knows.

Even if they're running in the background? My Focus S takes a lot of time to charge and decharges so fast. 35% is no joke.
---------- Post added at 07:41 AM ---------- Previous post was at 07:40 AM ----------
Even if they're running in the background? My Focus S takes a lot of time to charge and discharges so fast. 35% is no joke.

I'm also having some kind of battery issue, I have 2 batteries and they are both 100% charged but by the end of the day one is completely dead and the other is about 20%. I use my phone a lot for music and browsing over 4g and WiFi, but I charge by battery to 100% then go to the battery saver setting and at 100% it says time remaining about 5 hours. An when I turn on battery saver it says about 6 hours. On a full charge this seems crazy. Also with the homebrew battery monitor app. It says my phone is using over 4000mV. With screen set to low and in airplane mode. This is wierd.
Sent from my SGH-i937 using Board Express

goldenpipes said:
I'm also having some kind of battery issue, I have 2 batteries and they are both 100% charged but by the end of the day one is completely dead and the other is about 20%. I use my phone a lot for music and browsing over 4g and WiFi, but I charge by battery to 100% then go to the battery saver setting and at 100% it says time remaining about 5 hours. An when I turn on battery saver it says about 6 hours. On a full charge this seems crazy. Also with the homebrew battery monitor app. It says my phone is using over 4000mV. With screen set to low and in airplane mode. This is wierd.
Sent from my SGH-i937 using Board Express
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Click to collapse
4000mV? I assume you mean mA? not mV? 4000mV is only 4V which is about right, your voltage shouldn't change much, perhaps +-10% tops
if you do in fact mean Amps...
4000mA is 4A an hour, your battery would be dead in about 20 min at that rate and probably in fire as well
So, lets look at this in a different way,
2 batteries, that's about 3.3Ah max, you only had about 20% left in one which is approx 330mA so lets call it an even 3A of juice burned during your day.
An Average long day at work 12 hours
that's 250mAh current draw every single hour of that 12 hour day.
250 is quite high, but normal with the screen on and high brightness an wifi, however that isn't normal if you are normal and don't sit at your phone each hour for an hour for a whole day.
Things that can send your phone off on a amp burning spree? most common one is the backlight, set it to auto, and have a dark /black theme, AMOLED is the opposite to normal LCD screens where having a white background was best,
Next up is your signal strength, low 3G signal will eat your battery (4G is worse but thankfully we don't have that)
keep battery saving on all the time, it only kicks in when it needs to but I have seen dramatic differences having it turned off even with a full battery, im not sure what it changes when its not down to low battery but it does something.
background tasks can play a part but are minimal on WP.
I have 3 accounts on push sync, wifi and Bluetooth always on (but not always connected), I use it a lot during the day including several phone calls and web browsing, I start work at 8am, finish at 7 or 8 PM and im still sitting with 50% battery...
that works out at an average of just under 70mAh. that's about the normal level id expect, its double that if I turn battery saver off (even though it wont kick in until the last hour of the day)
oh I can make it go quicker when I show off the full capability's of our screens too

[Q] 4 hour battery life on heavy non gaming usage

i am getting 4 hours tops of batterylife on my z1
i have maximum brightness auto turned off i have wifi and bluetooth off
i have a live wallpaper
i have skype steam running in the back
it takes 2 hours for it to drop to 50 and 4 hours to 0 from full charge on pretty much full on screen time
is this normal even on that kind of heavy usage

I would recommend using wakelock detector to see what's really soaking up your battery. It's a free application and it's pretty self explanatory. Charge up your phone and use it heavily again and report back to us with your findings through wake lock detector.
Sent from my Nexus 7 using xda app-developers app

Have push mail on ? My phone was empty very quick before the update .257 but now its much better.
I think if you mean with 4 hours onscreen it is normal otherwise it is not.
Use wakelock detector already mentioned

4 hours on screen time with full brightness sounds reasonable. I can play heavy games for about 3,5 to 4 hours with medium display brightness.
Always keep in mind that the display is the biggest power consumer in modern Smartphones.

OfficerTux said:
4 hours on screen time with full brightness sounds reasonable. I can play heavy games for about 3,5 to 4 hours with medium display brightness.
Always keep in mind that the display is the biggest power consumer in modern Smartphones.
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so the battery really is that bad?
using stamina it drops 20 or so % during the night

Actually the battery with its 3000 mAh is gigantic. And I think 4 Hours of heavy usage with full brightness is ok.
20% over night with STAMINA mode is too much though.

OfficerTux said:
Actually the battery with its 3000 mAh is gigantic. And I think 4 Hours of heavy usage with full brightness is ok.
20% over night with STAMINA mode is too much though.
Click to expand...
Click to collapse
i have steam and skype whitlisted in stamina
really dissapointed in the battery life then
i guess theres no such thing as a full day of usage then
is there any smartphone that can handle that?

Do you actively use your phone all day (screen on all the time)?
With medium usage (WhatsApp, Surfing, Some calls) I can go for at least one, maybe two days.

I slept for 10 hours and my battery drained 9% with wifi and GSM on from full charge. your using the stock charger right? charging faster then recommended will reduce the life of the battery and can cause this kind of issue, but the phone is so new i wouldn't expect that to be the cause. I know the stock charger 1.5A. With a 2A charger it is likely the phone will charge at 2A.
Its probably a software related issue your having, but 20% overnight seems like a lot..

crusnikmachine said:
I slept for 10 hours and my battery drained 9% with wifi and GSM on from full charge. your using the stock charger right? charging faster then recommended will reduce the life of the battery and can cause this kind of issue, but the phone is so new i wouldn't expect that to be the cause. I know the stock charger 1.5A. With a 2A charger it is likely the phone will charge at 2A.
Its probably a software related issue your having, but 20% overnight seems like a lot..
Click to expand...
Click to collapse
i use the dock charger

zzcool said:
i use the dock charger
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I would something is hitting your phone for wakelocks. 20% over night is a bit high. I know google currents is a know offender so uncheck that if you have it syncing. Try turning off google location access. Turn off gps and nfc. Using you phone at max brightness will always be very draining, leave on on auto unless your outside in daylight or in the car. Facebook is also bad for wakelocks. Any app that is polling for updates will be hard on battery. My experience has been a much improved battery life over my previous devices. On an average work day I leave at 8 and get home at 430, and I usually have 70-75 % by bedtime usually around 30%. I leave most my apps syncing all the time as well. I know the phone is new to you so I would say you might be playing with it more than you normally would.

zzcool said:
i have steam and skype whitlisted in stamina
really dissapointed in the battery life then
i guess theres no such thing as a full day of usage then
is there any smartphone that can handle that?
Click to expand...
Click to collapse
I suspect that steam / skype will be preventing the phone from ever going to sleep.
I would suggest capping the max frequency of the cpu to quite slow or setting the governer to a conservative level (an app could be forcing the cpu to stay at a high frequency most of the time which will just drain the battery in no time)
However this usually requires a custom kernal or at least root which isn't very well developed on the Z1 yet.
If you can run a wakelock program that also logs the time spent at each cpu speed ... that would help people help you ...
As for any phone being able to handle it, unlikely the battery is relatively large but so is the screen, most phablets have only a fractionally bigger battery.
Only a full blown tablet will get you a much bigger battery that might be able to last you twice as long.
I typically go 3-4 days between charges on the .257 firmware without stamina mode and paired to a smartwatch 2.
I used to get 3 days on the 534 firmware with stamina mode! (i work in an area of very weak signal so i get 25% no signal time over a battery charge)

Battery Life Discussion

Please post your battery discussion here:

Hardcore73 said:
Please post your battery discussion here:
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Click to collapse
The first day I had it, I woke up around 8:00 AM and got to about 6:00 PM when it ran out of juice. This was with heavy use, screen always on and brightness set to about 60%.
I changed the settings so that the screen is not always on and brightness is now set to 40%. This made a huge difference. Today, for example, I've already had it off the charger for 8 hours and it's still at 79% battery. I'm at work, and it's getting used as it normally would be.
The screen being set to always on will obviously burn through battery at a fairly quick rate, especially if the brightness is set high. It's worth noting that letting the screen turn off automatically does not impede its usefulness. The screen comes on automatically when your turn your writes to look at the device, and when you touch the screen.

100% @ 7:30 a.m. & @ 31% battery as of this post, 9:20 p.m. with heavy use throughout the day. I had the screen @ always on through the majority of the day; however switched to off @ around 7 p.m.

eschlenz said:
The first day I had it, I woke up around 8:00 AM and got to about 6:00 PM when it ran out of juice. This was with heavy use, screen always on and brightness set to about 60%.
I changed the settings so that the screen is not always on and brightness is now set to 40%. This made a huge difference. Today, for example, I've already had it off the charger for 8 hours and it's still at 79% battery. I'm at work, and it's getting used as it normally would be.
The screen being set to always on will obviously burn through battery at a fairly quick rate, especially if the brightness is set high. It's worth noting that letting the screen turn off automatically does not impede its usefulness. The screen comes on automatically when your turn your writes to look at the device, and when you touch the screen.
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Click to collapse
So which mode will you run daily? Screen-off?

vypurr said:
So which mode will you run daily? Screen-off?
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Click to collapse
Screen off for sure. It comes on automatically when I go to look at it, and I want to conserve battery.

eschlenz said:
Screen off for sure. It comes on automatically when I go to look at it, and I want to conserve battery.
Click to expand...
Click to collapse
Undocked at 8 AM with 100% charged, used till mid night with heavy usage with 32% left when got to bed. Very impressed with battery performance. I am using default settings (brightness - 4, Always-on screen, showing cards on dimmed screen, alert on watch and phone when connected).

pthakkar9 said:
Undocked at 8 AM with 100% charged, used till mid night with heavy usage with 32% left when got to bed. Very impressed with battery performance. I am using default settings (brightness - 4, Always-on screen, showing cards on dimmed screen, alert on watch and phone when connected).
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Click to collapse
Unplug at 7:30am @11pm still 49% battery but my note 3 battery goes down, i have to plug it in the afternoon.
My battery usage on my phone shows android wear being the main culprit.
Before that, I could last all day in one charge.

unplugged at 8a.m. plugged back in around 1:30a.m. about 18% left.
Screen set to "always on", brightness set to "4".
I'm not sure what constitutes heavy usage, but I do look at my screen and do a couple of swipes about every 15 minutes or so, unless I'm expecting an email or something.

Why do you need the screen always on?
The screen on when you look at it functions really well, and saves a lot of battery.
I unplug at 6.45 am. Still got 60% by 10.30 pm
Sent from my HTC One using XDA Free mobile app

Wow, guys, what am I doing wrong?
I take mine off charge when I get up at 5.30 AM.
It's down to 85% by the time I leave the house at 7am (it's maybe had the screen on for a total of a minute maximum).
I lose roughly 10% an hour (with maximum "screen on" time of a minute or 2 an hour.
It's below 20% by 3 or 4pm.
So I thought it might be that I had brightness on 4/5, so I've changed to 1/5, but still, it's little better. I might get an extra hour maybe.
I like the idea of it, and when it's alive, it's great. But for me, I'm struggling to get 10-12 hours, with low use.
i'm gonna try it tomorrow with Screen-off mode enabled.
I'd happily accept charging it every night, but I'm struggling to get half a day here.

greatcapp said:
Wow, guys, what am I doing wrong?.
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Click to collapse
There's definitely something wrong there. I would try unpairing and resetting the watch (the only thing you'll lose is fitness data).
Then I'd uninstall Android wear from the phone, reset the phone and start all over again.

gadgetgaz said:
There's definitely something wrong there. I would try unpairing and resetting the watch (the only thing you'll lose is fitness data).
Then I'd uninstall Android wear from the phone, reset the phone and start all over again.
Click to expand...
Click to collapse
Thanks.
Gonna try that now..........

i agree, there's something not right in your situation.
i took mine off at 11am and it's almost 3am now and i'm at 43% screen always on and moderate use

Got mine on Thursday. Since then it's off the charger for 16h/day. Setting is always on. Indoor I usually keep the brightness at 1 since I really don't need more. Outdoor it's always at 5.
I always end my day with 20-30% left.
One thing I noticed is colourful watch face kill the battery. Specifically while driving since the brightness it at 5 at the screen come on often while driving or doing other activities.
Sent from my SGH-I317M using XDA Premium 4 mobile app

Having reset the watch as suggested, It does seem greatly improved for me.
It came off charge this morning at 7am, so by now I'd normally be down to maybe 30-40%, but I'm currently still on 82%.
Thanks for the suggestion - it looks like it may have solved it.

I'd normally end the day with about 50% left. Two days ago I installed Pinterest and Fancy to see what the interface is like. The next day I ended the day at 7%. Today by around 4pm I was down to 30%.
i uninstalled both apps, charged it up, and the battery usage seems to have gone back to normal.

On my watch the battery is not that great comparing to some of you. Have you activated some battery saving options ?

Mine comes off charge at around 7am. By 10pm I'm usually around 25-35% battery. Usage is light to medium, with screen set to always on at default brightness.

Ichigo-Roku said:
On my watch the battery is not that great comparing to some of you. Have you activated some battery saving options ?
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Click to collapse
i think it generally comes down to how much you interact with the watch. while i have somewhat moderate usage, the interaction time with the screen fully lit is fairly short, a majority of the day my watch is in the low power screen state (b&w mode) and i think that prolongs the battery quite a bit since it is a samoled screen and i'm sure the processor drops down to a low power state.
a lot of my use is swiping away notifications and navigation (but while in navigation the watch is mostly in the low power state since it shows my next step on that screen)

I'm not interacting that much with it, but each time I turn my wrist, the screen turns on, and I think that's the problem. The B&W mode is nice, when I just want to use it like a real watch the B&W mode is sufficient, is there a way to stay in B&W mode when I turn my wrist, but still have the vibrations on?
Thanks.

Samsung Galaxy Watch 3 Battery Draining Fast!

Hi I noticed that my watch battery drains so fast. I charged it at noon and finished the charging at around 1 PM and after 4 hrs of not even using it much, it's down to 65%.
I would like to return the watch if the battery drains like this so fast. Any advice?

This was my fear about buying the watch. My Galaxy Watch lasts about 6 days on a charge. Try factory resetting it, maybe. Something might be stuck running.

whilmeister said:
Hi I noticed that my watch battery drains so fast. I charged it at noon and finished the charging at around 1 PM and after 4 hrs of not even using it much, it's down to 65%.
I would like to return the watch if the battery drains like this so fast. Any advice?
Click to expand...
Click to collapse
How long have you had it? There is a period where you are playing with it more (without realizing it) and it also takes the battery several charge cycles to balance out the battery and measurement.
To troubleshoot:
Go into the Galaxy Watch app on the phone and look and see what is draining your battery. If it's a watchface, change it to test. If you don't notice anything unusual, factory reset the watch and do NOT restore the backup. Run it for some time in a "vanilla" format (no apps / watchfaces / no modified settings). If it STILL drains .. you might have an issue.

I have the 45mm LTE SM-R845U. Have LTE on, WiFi on, Bluetooth on and connected to my Note 10+. Currently 1 day 14 hours 14 min on battery and setting at 34% battery available running in standard power mode.

wattsja said:
How long have you had it? There is a period where you are playing with it more (without realizing it) and it also takes the battery several charge cycles to balance out the battery and measurement.
To troubleshoot:
Go into the Galaxy Watch app on the phone and look and see what is draining your battery. If it's a watchface, change it to test. If you don't notice anything unusual, factory reset the watch and do NOT restore the backup. Run it for some time in a "vanilla" format (no apps / watchfaces / no modified settings). If it STILL drains .. you might have an issue.
Click to expand...
Click to collapse
Thanks Wattsja! I'll do it today.

I'm actually playing around with "I'm Alive" for a true AOD. I'm still analyzing, but my current burn is @4% an hour with a constantly visible second hand (the non-continuous quartz motion). That's a 45% OPR, for the nerds (vs. Samsung limitation of 15% in dim mode).
I have a much more involved work around that is potentially a little better, as I suspect an active display looking for touches and gestures is a significant battery drain in this scenario. If I can get the burn down to 3% per hour, I might just keep this watch

I agree pretty much what others are saying here. Batteries need time to settle, and there's a lot more interaction with your new toy and lots of stuff updating and installing, far more than you think. It's exactly the same with phones.
So give it a few days and you will see it improve to your expectations.
.

I experienced intensive battery drain. Bluetooth seemed to be in a faulty status. Watch battery duration was less than one day (SM-R800 46mm). Solution was as simple as unpairing the watch and re-pairing. No need to reset.
In a previous occasion battery drain was simply due to Wi-Fi on.

Pixel 5 - less than stellar battery life?

I'm coming from an Exynos S10e which was great but had terrible battery, so one of the main draws for me on the Pixel 5 was the increased battery life - I need to get a full day of quite heavy use.
So I got the phone and like it a lot, but although battery life is better (it couldn't really fail to be) I'm not getting the terrific screen on time that others are boasting about. I tend to charge up to 80% or so and try to recharge on around 20% and don't watch a ton of video, so I'm mainly checking emails and news, surfing the web, reading text and sometimes dipping into YouTube.
I've currently used 60% in 20 hours, but that includes eight hours of sleep when the phone was idle and has virtually no sustained screen on time. Overnight, the phone uses about 1% an hour with the screen off, although I do have AOD on during the day. If I watch video (adaptive battery and adaptive brightness on) it ticks down pretty fast.
I'm told that Accubattery isn't really accurate, but it had 'battery health' down as 3880mAh (97%) from the get-go, which worries me. (It also has screen on time pegged at 7 hours and 51 minutes, which I absolutely don't believe.)
My questions are 1) Is there anything I can do to check/improve battery life and 2) How accurate are the Accubattery readings likely to be?
Or am I simply expecting too much, which is entirely possible?
Thank you!

AOD basically cut my time per charge in half, i am not a heavy user so my screen on time is always on the low side. But turning AOD off (and the AOD on move thingy, which apparently triggers all the time when in a pocket or even next to you on a couch) i jumped from ~1.5 days to 3 days per charge (with 3-4 hours SoT light use: podcasts, reading news, etc.).
After the pixel 5 motivated me to go through all those options i set up my old oneplus 3 with the same settings / android 10 and i am getting basically 2 days out of it (again the AOD changes did the trick). Which basically disillusioned me about the Pixel 5 battery, it's nothing special. Just about what you expect from a phone with this battery size and a simple Full HD screen and a SoC that is somewhat energy efficient.
Small Addition:
I'd really be interested in other peoples experience with AOD. I've red people saying things like "you don't need a notification LED when the AOD is so energy efficient" personally i think that is just not true. If you are a power user and you have a daily sot of 5-6 hours maybe. But for people like me that 1% battery drain per hour (i noticed about the same figure when i had AOD on) just adds up to a lot. In two days basically 50% of your battery is gone, if you follow the 80/20 rule, which i do not think is necessary, that basically leaves you with 10% of your battery for other things. Seems like AOD isn't as efficient as some people might want you to believe and a notification LED might something i will look out for on my next phone.
I can't remember what the train without AOD was but it was noticeably less.

AOD is a stand by battery killer. For anyone that uses the phone on a desk facing up. Especially in bright areas where the AOD triggers the max brightness.
However. This affects people who has more than 20-24 hours of standby time. People who do... 8:00 to 24:00 every day (so 16 hours standby) is much less affected by AOD battery drain.
So yeah. For light users. Disable AOD is my main recommendations. I stopped using AOD in the last year that I used the Pixel 2.
All the other tweaks are less relevant. But my rule is to just enable what you need.
Example: every time I say ok Google I'm at home with a google home around. So I disabled ok Google from the phone. (I just tap de assistant icon).