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[Q] Losing 30-40% battery overnight

I had this problem once when I first got my captivate, but then it went to normal (lose ~5% overnight). Overnight I keep wifi connected and airplane mode off. I was happy, lasted 10-15 hours daytime depending on how heavy I used it, etc.
I recently ordered a two spare batteries with an extra micro usb cord as well as an external battery charger (charges batteries while not inside the captivate). I use the new microusb cord to charge sometimes too because for some reason it doesn't work with PC to connect micro sd card, and I charge my batteries mostly using the external charger.
I recently started losing 30+% overnight. I don't know when exactly (if it were apps or the new batteries, but it happens with my old battery and the new ones). I installed spareparts and battery history and tried turning off background data but I still lose this much overnight. I don't really know how to read spareparts to try to isolate an app. My daytime battery life is not drastically lower than before (10+ hours), but I think it is a bit lower than before. Does anyone know how to fix this problem?
tl;dr:
- used to lose <5% battery overnight
- got new batteries, now use external charger
- suddenly started losing 30%+ overnight, don't know why
- help please!
thanks!

I personally lose more than that overnight when I have wifi enabled. However when I have it off I lose less than 5%. So I guess I'm in the opposite situation as you.
Since you already have spare parts installed and used to have better life the only thing I can suggest is recalibrating http://forum.xda-developers.com/showthread.php?t=765656. Sorry if you have already done this before. It's just that when you pull the battery and switch it I'm assuming the battery stats file may not adjust accordingly. It's worth a shot.

I seem to be having the same issues as you. I made a thread over at the Q&A section which may be of some help.
http://forum.xda-developers.com/showthread.php?t=829285
As for losing more than 30%-40% overnight with wifi enabled, there has got to be some lingering issue on your phone if it is losing that much. I don't think any phone, no matter how bad the battery life it has, should lose that much overnight, granted that you don't have a TON of data intensive activities running on your phone.

30-40% WOW!
I get 36-48 hours in between charges on my phone.
Wifi is always on, sync is always on, no live wallpaper, weather and email updates every hour. I'm not on it every minute of every day but enough use for sure.
over night I lose about 5% on average.

Calibrate your battery...but you can't change batteries or you need to calibrate all over again.
Sent from my FroYoed Sprint Hero

As I posted in this thread: http://forum.xda-developers.com/showthread.php?t=829285, I did a factory reset and my phone seemed to be working fine as it slept when the screen was off (checked by using *#*#4696#*#*). It was good until approximately 50% when all of a sudden I checked and it wasn't sleeping once again. Checking the partial wakelock "Android System" was taking up an increasing larger amount of this section. I didn't do anything on my phone as I was sleeping and periodically, when I'd wake up, I'd check on my phone status. When I reboot the phone once this happens, it sleeps once again.
Keep in mind, my phone is stock. Didn't install any apps or anything at all since the factory reset. Now I'm not sure if I have a defective phone. Maybe the Android OS is set up to run like this? There's no such thing as a defective OS is there? Can't be anything on my end because I didn't touch the phone nor did I install any bad apps (or any apps at all for that matter). Can it be a battery issue? I can't see how a bad battery can cause the phone not to sleep. Is there something in the Android OS that turns on automatically after a while that may be causing it?
I'll try to recalibrate my battery but I don't know how that would alter if my phone sleeps or not, but I'm willing to try. I'd rather not take this phone back and get another one as that's a hassle.

Mine will loose 40% over an 8 hour window easy with absolutly 0 use if its near the "edge" of either wifi coverage or data coverage.
IE, sit the phone down with a weak att signal and walk away. It'll die on its own unless you airplane mode it within half a day.
I have to religiously turn the phone on airplane and switch to wireless at home, and turn to airplane and turn wireless off at work (can't connect to work VPN with 2.1 !)
If I leave it on full in either location, it's bloody dead next time I touch it.
However, with good home wifi, I can actually get 4 days of email checking, use as alarm clocks, some other sms stuff without plugging in.
This things is helaciously sensitive to wonky radio connections.

hmmm. I guess I'll try it with wifi on tonight. I don't think recalibrating would cause it to have a 10x difference in idle battery usage, but I'll try that if all else fails

I use Setting Profiles app and have it set wireless to Airplane mode from midnight to 6am. Still, I'm finding my battery down by 30-50% at night.
Looking at Battery Usage, my Display, Cell Standby and Phone Idle we all using the majority of the battery power. I'm not sure if these numbers are reset after the phone comes off the charger or how it is calculated.

I just turned off wifi altogether and have seen huge improvements. I don't even use it anymore despite being in my house with a wireless connection. Data usage isn't that much slower so not much of a loss. At least it can sleep.

i only get like 24 hours on my phone :/

fshalor said:
Mine will loose 40% over an 8 hour window easy with absolutly 0 use if its near the "edge" of either wifi coverage or data coverage.
IE, sit the phone down with a weak att signal and walk away. It'll die on its own unless you airplane mode it within half a day.
I have to religiously turn the phone on airplane and switch to wireless at home, and turn to airplane and turn wireless off at work (can't connect to work VPN with 2.1 !)
If I leave it on full in either location, it's bloody dead next time I touch it.
However, with good home wifi, I can actually get 4 days of email checking, use as alarm clocks, some other sms stuff without plugging in.
This things is helaciously sensitive to wonky radio connections.
Click to expand...
Click to collapse
It's not just this phone. My wife's iPhone does the same thing, as did my Q9H. The constant switching from 3G to Edge will kill a battery.

SiL3nTKiLL said:
i only get like 24 hours on my phone :/
Click to expand...
Click to collapse
24 hours is normal.
Sent from my FroYoed Sprint Hero

I turned off wifi and have seen an improvement. It's still not where it was before, though - I used to lose 5-10% with wifi on. I wish I knew what happened.

Love The Phone but...Battery Rant

Hey Guys,
I am usually just a silent observer on the boards and try and gain knowledge from all these amazing developers but my experience last night has pushed me to vent. I live Atlanta, and a Vendor had offered us some suite tickets to the Falcons Ravens game. Of course I would take those. Knowing this phone does not get the best battery life, I made sure to have the phone fully charged before I departed. I left the office at 5pm with a full charge. Throughout the night I would send a txt here and there and take a photo, nothing too strenuous I thought. As the game was coming to an end I looked down and saw that the phone was already in the yellow, not terrible since it should last me till I get to the car. I’m not thrilled because this means the phone charge has only lasted 6 hrs. I get off the mass transit station and go for my car key…..and it’s not there. I check all my pockets to find nothing. I am now screwed. No car, no phone, no charger. To cut the story short, I had to find a payphone (needle in a haystack) and call collect to my father, who has the only spare key. Needless to say he was not too please coming down at 2 am to get me out of the jam. I am just so furious that the phone died so quickly on me. It seems if I ever go out at night, if I’m not near a charger, that phone is dead within hours. Sorry for the rant, but its just the one major flaw about this phone. My old Tilt would last a couple days ( I know I know, small screen low processor) But a solid day out of these phones would be nice.

Do you manage the battery consumption by turning off unneeded features such as Bluetooth and Wi-Fi? Have you set the screen timeout to a few seconds of idle time? The display is the biggest consumer of battery power. Finally, when I know I'll be away from a power source for more than 6 hours, I put a fully charged spare battery in my pocket.
FYI the Galaxy S has one of the best batteries for a smart phone. With careful use and battery management, I routinely get 16 hours before a yellow warning.

I had much of your same problem in the first few weeks of having the captivate, prompting me to go buy two extra batteries and a charger off ebay ($10). I feel that upgrading to cognition 2.2 and using the task manager to stop facebook and such from always updating has saved a lot of life, and my phone will last a day to a day and a half on a single charge, so long as I put it into flight mode at night. then I just shut the phone down, switch out batteries, and turn it back on.

I have the screen set at the lowest possible brightness (11%). When i am out i never have bluetooth or wifi on. Perhpas there was a runaway app that was draining the battery. I have never gotten 16 hrs though. My max is about 12, and thats if i dont make any phone calls. You start making calls, it just kills the battery life on my phone. I did use to have a spare battery on my tilt, i might have to do the same with this phone.

It's most likely because your phone is not sleeping when the screen is off.
Download the "Spare Parts" app or just enter *#*#4696#*#* in your dialer and check out the "Battery History". If the Running % is almost full (around 80%-100%) during a day's use, your phone isn't sleeping when the screen is off which means battery is draining. Give it a reboot when that happens, but the known cause I've found was that WiFi causes this issue.

Are you sure you weren't losing signal when you were in the arena? When you lose signal the phone constantly searches for a signal causing your battery you drain.
I know in arenas you don't get a strong signal...
Just a thought

Turn on airplane mod when ur not really using your phone..

I have a great battery life. Especially when not using HSUPA. Try deleting your battery stats.

I typically see 12 to15% per hour drain with constant use.... meaning display is on all the time and I am on internet, phone laying idle overnight... 1%/hr tops. I do have a nice signal at home though... ranges from –70 to –85 so the modem is not working hard at all.

Battery life?

Hi,
I have the s2 classic and I love it. I have read on CNET that they were able to get nearly 3 days of battery life before charging. I can't get 24hrs of usage before charging. I have changed the brightness to 5 (the screen does shut off and is not on the always on mode), I shut off wifi and NFC . I am not using it all that much, what is everyone else getting on average? I just want to know if I might have a lemon.
Thanks
APT_ART

Hey @APT-ART , You can't try to turn off the automatic heart sensor for longer work on battery. Also the black background (pure black, so pixel are not lighted at all for that part of the face) will help to improve it.
For me it depends on how many notifications there are during the day, what applications I am using and how I charged it last time (I recommend to clean both the back part of the watch and the wireless charger as well). Also for some faces the brightness level of 2 or 3 should be enough to use it as a normal watch WiFi on but NFC off, also the automatic heart sensor turned on but less regular setting.
The battery stands for me for about 30 - 40 hours. But for the first two times I've got only about 16-18. Just let it discharged to 0%, then charge it to 100% without turning on. Good luck!

I keep my brightness at 3, keep always on watch face turned on, tilt to wake off, heart rate off, wifi on, nfc off, S voice watch face listening off, get probably 50 notifications per day and after a 16 to 18 hour day have about 40 to 50% battery left.
I think S Voice watch face listening, higher brightness, and tilt to wake (especially at a higher brightness) does the most damage to battery life.

KubixRevan said:
Hey @APT-ART , You can't try to turn off the automatic heart sensor for longer work on battery. Also the black background (pure black, so pixel are not lighted at all for that part of the face) will help to improve it.
For me it depends on how many notifications there are during the day, what applications I am using and how I charged it last time (I recommend to clean both the back part of the watch and the wireless charger as well). Also for some faces the brightness level of 2 or 3 should be enough to use it as a normal watch WiFi on but NFC off, also the automatic heart sensor turned on but less regular setting.
The battery stands for me for about 30 - 40 hours. But for the first two times I've got only about 16-18. Just let it discharged to 0%, then charge it to 100% without turning on. Good luck!
Click to expand...
Click to collapse
Really good tip, I am going to let the watch discharge to 0% and see what happens. thanks! :good:

With very light usage I can easily get 3+ days. I turned off nfc and WiFi. I left on the heart rate scanning. I use it as a stand alone watch at work since I can't use my phone. I have the brightness at 3 and ambient display off / tilt to wake on. Not ideal usage for some, but it's a good setup for me.
Sent from my A0001 using Tapatalk

I'm assuming everyone here has the non 4g version and that's why you guys are getting pretty good battery life. Got my S2 yesterday with 4g and fully charged overnight. Took off charger and about 8 hours later the S2 is at 38%. Not happy but going to try that discharge tip. To see if it helps. Also may have to tweak some other settings. I had the Gear S 4g and it didn't drain that much. I can usually get a days worth out of it.

you need several cycles to really know what kind of battery life you can expect; one days worth wont tell you a thing

How do you change the heart sensor setting?
Sent from my Nexus 6 using Tapatalk

phxtravis said:
How do you change the heart sensor setting?
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
You can change it by going into the s health settings on the watch. Options for auto heart rate are frequent, moderate, or off. These settings are separate from if you actually go in and start and exercise. I have my auto turned off (to conserve battery) but when I go in and actually start an exercise session on the watch, it will monitor heart rate. The auto heartrate is just for random monitoring throughout the day....having it set to off will not impact monitoring when you start an exercise.

what is your per hour average battery drain?

Almost a month since purchasing (Amazon return window coming up fast). Here's my experience given that I walked right into this battery-gate issue.
Disclaimer: I'm a heavy user. I get A LOT of email notifications, WhatsApp and keep the screen fairly bright (never less than 7 out of 10). It has Verizon LTE service. Verizon said this would not affect my battery life....
Week one. On a full charge I could only get about 5 hours. Off the charger 9 am and by 2pm it was back on the charger for a one hour re-charge that got me home until it was back on the charger for the night.
I had to purchase a second charger for my desk during the day. I picked up a third for $8 just to keep in my bag for when on the go.
Week 2. Same 20% drain per hour.
Week 3. I switched off diagnostic notifications, and switched from vibrate alerts to sound alerts. Big improvement. I went from 5 hours to about 9 hours. Battery drain is now 11% per hour.
Zero Lemon needs to make an S3 case...
And it needs a fast charging port. A Battery this small would charge quickly with a cord. 2 hours for 0% to 90% is pretty ridiculous in this era. My Note 3 charged to 100% in an hour 4 years ago.. And yes I know it's for waterproofing but other makers like Garmin and Polar use charging ports with waterproof gaskets.

I was getting about 2 to 3 percent per hour until a few days ago when the battery drain bug hit. At that time, it was almost 12% per hour.
I did a factory reset and I'm sitting at about 1.6 to 2 percent per hour.

I get about 1-2% but I don't need the fitness tracking stuff so i usually have Samsung health disabled and AOD off but location on and wake gestures on. I also have the diagnostic option off since the day I got it. I read somewhere the current battery bug can be averted by turning the diagnostic option off. I get 20+ emails a day and about 30+ texts and WhatsApp each. So I generally use my watch for texts, WhatsApp, emails, weather and Samsung Pay

With AOD ON and use for many things : cheklist, note, memo, notification, alarm, timer, stopwatch.... I have average drain of 3.5% at 4.5% by hour. I'm happy when I have 3.5% but it grow quicly to 4%-4.5% if I use a little. Just but can live with this.

For those who have serious battery drain on v3.0.0.2 (and even have broken sensors such as heart rate detection like me) can go for repair, if still covered by warranty.
I have recently the same behavior as described by many after upgraded to v3.0.0.2, battery drain 20%/hr and it become worse when I found out wake up gesture is not working at all, so is the heart rate sensor as well as steps tracker.
I hesitated whether to send it back to repair, but in the end so glad I did, it only took 1 day and they informed me they have changed the motherboard and replace with new battery (as I told them about bad battery drain issue as well). And guess what, I got back my gear s3 frontier with everything working but on old enough firmware 2.3.2.3 (which is working pretty good, just that battery usage around 5%/hr not that great).
After that I decided to take the risk to upgrade my firmware to 3.0.0.2 again, and whoa, everything still works perfect and battery drain has gone! Battery usage is now around 1%/hour which is acceptable I think.

no deep sleep and mediocre battery life?

Hi
I have the phone since this weekend, and I am not seeing the ultra great battery life that reviews had.
1% per hour while not using the phone and 0% of that time on deep sleep?
25% lost with just 40 minutes of screen with very light use?
70mah of use for using the camera to record a single video of 30 seconds? wth?
any idea?

You can hardly charge the battery life after only one or two days owning the device, it needs time to settle down.
If you do have something draining your battery, its a rouge app.

I also experienced bad battery life at first but later on found out it was due to 5G connection. Maybe you will find reason for your case soon.

I had your problem, I rebooted the phone (just reboot) and the deep sleep worked again ,these are my consumptions now, only wifi, camera, youtube, games (heavy use) the application closed in deep sleep and I do not capture my sleep hours, 10 hours approximately