Database Info

[OBSOLETE] Recalibrating Your Battery Stats...

***
Due to further information from both the hardware and OS side of the house, it has been determined that this process is completely unnecessary for the Captivate.
You may still follow this procedure if you like or if it makes you feel good.
Good luck and God bless.
***
So, you are having trouble with your battery seemingly draining too quickly, especially after having flashed many ROMs/Kernels/etc...
It is possible that the problem (or part of the problem) is not necessarily the phone using too much power, but rather the phone not really knowing how much power you have left, or where 100% or 0% really are. If this is the case for you, you should see some results from doing the following:
(Do at your own risk. If your phone runs away and joins the circus I am not responsible)
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Use the phone as normal until it shuts off, then plug it in, turn it on and use as normal, charging whenever you like.
You should only need to use this sequence one time.
Hope this helps.

...
10 char

Thanks for posting this, I remembered seeing it in another topic but I couldnt find it anywhere.
Sent from my SAMSUNG-SGH-I897 using XDA App

KJPDX said:
Thanks for posting this, I remembered seeing it in another topic but I couldnt find it anywhere.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Yeah, I had it in a text file on my computer from a little while back, and was going to bump the topic but I couldn't find it anymore.
This may have to be done again after ROMs and stuff, so either bookmark this post, or copy-paste it into a document on your computer you can refer back to later.

Also, this give creedence to the age-old, often-debated theory that you should give your battery a full charge before turning on your phone for the first time...

It makes me sick when we have to do all this crap.

mwxiao said:
It makes me sick when we have to do all this crap.
Click to expand...
Click to collapse
Sorry, it's a price we pay for messing with the software/firmware on the phone.
Also, if people did an actual full charge before using their phone for the first time, there would probably be fewer "Battery Life Sucks" threads...

Dont forget to boot into recovery after you full charged (adb reboot recovery or Power off the phone and then hold the volume up + Volume down + the power key. When it goes black the 2nd time release the power button and keep holding the volume buttons.) wipe stats Clockworkmod recovery -> advanced -> wipe battery stats.

Question for ya's.when I got this phone the att dude just turned it on and gave it to me without allowing for a full charge.should I go back slap him in the face and get a new battery and fully charge it before first use, cause its almost been two weeks and my batt life still seems kinda poor to me.
Also if I do that should I unroot and restore the att apps or will they not notice or bother to check that
Sent from my SAMSUNG-SGH-I897 using XDA App

Recalibrating may help slightly, but the Captivate just has a ****ty battery life. Read here, it was the worst in the entire test. No coincidence, the S-AMOLED's came in last in battery life and the S-LCD's came in first.
http://androidheadlines.com/2010/08/android-phones-battery-tests-are-in-and-we-have-a-winner.html

derek4484 said:
Recalibrating may help slightly, but the Captivate just has a ****ty battery life. Read here, it was the worst in the entire test. No coincidence, the S-AMOLED's came in last in battery life and the S-LCD's came in first.
http://androidheadlines.com/2010/08/android-phones-battery-tests-are-in-and-we-have-a-winner.html
Click to expand...
Click to collapse
Without any details of how that test was performed, the results are meaningless.
I get battery life as good as my old iphone with the captivate. I wish it was better but it seems very competitive to me.

derek4484 said:
Recalibrating may help slightly, but the Captivate just has a ****ty battery life. Read here, it was the worst in the entire test. No coincidence, the S-AMOLED's came in last in battery life and the S-LCD's came in first.
http://androidheadlines.com/2010/08/android-phones-battery-tests-are-in-and-we-have-a-winner.html
Click to expand...
Click to collapse
Something doesn't make sense since the Epic 4G has better battery life than the Captivate. Me thinks they didn't test these properly.

k2snowboards88 said:
Without any details of how that test was performed, the results are meaningless.
I get battery life as good as my old iphone with the captivate. I wish it was better but it seems very competitive to me.
Click to expand...
Click to collapse
I can't even come close to the same battery life on this captivate as I did with my old iphone. I have to charge this phone every single night, where with my iphone I only had to charge it 2 or 3 times per week. I take it off charge every morning and by 10pm its down to around 20%. My old iphone I could go 2-3 days, and I do the same things on both phones. Checking facebook and twitter, playing a little bit of kingdoms live, a little websurfing, and checking emails, as they come in.
Same usage and 1/2 to 1/3 of the same battery life. Not so good.
Also, you cant say the test was meaningless because they dont tell you how they tested it. As long as they ran the same test on all the phones then a direct comparison of battery life is very legitimate and meaningful. But I agree, I would like to know what their testing methods are.

derek4484 said:
I can't even come close to the same battery life on this captivate as I did with my old iphone. I have to charge this phone every single night, where with my iphone I only had to charge it 2 or 3 times per week. I take it off charge every morning and by 10pm its down to around 20%. My old iphone I could go 2-3 days, and I do the same things on both phones. Checking facebook and twitter, playing a little bit of kingdoms live, a little websurfing, and checking emails, as they come in.
Same usage and 1/2 to 1/3 of the same battery life. Not so good.
Also, you cant say the test was meaningless because they dont tell you how they tested it. As long as they ran the same test on all the phones then a direct comparison of battery life is very legitimate and meaningful. But I agree, I would like to know what their testing methods are.
Click to expand...
Click to collapse
By old iPhone, do you mean 1st gen EDGE only iPhone? If that's the case, you can disable 3G on Captivate and get similar battery life.

k2snowboards88 said:
Without any details of how that test was performed, the results are meaningless.
I get battery life as good as my old iphone with the captivate. I wish it was better but it seems very competitive to me.
Click to expand...
Click to collapse
If you go to the actual Laptop magazine post it explains
The test itself is fairly simple. Avram, our tireless Web director, modified the LAPTOP Battery Test we use for notebooks, and created an Android App that does much the same thing: It opens the phone’s Web browser to one of 60 popular Web sites, remains there for 60 seconds, closes the browser, then reopens the browser to next Web site on the list. It does so until the phone’s battery dies, all while recording the time elapsed.
Here’s how we set up the phones before we tested them:
First, we download My Settings and Advanced Task Killer, two free apps that are useful regardless.
Then, we open My Settings, and do the following:
Turn screen brightness to 40%, and turn off auto brightness.
Turn off Wi-Fi, Bluetooth, GPS location, cell location, and auto sync.
Deactivate screen timeout; that is, make sure the screen stays on indefinitely.
In the Web browser, we turn off Flash support and plug-ins.
We placed the phone in an area that was receiving at least 4 bars of service.
http://blog.laptopmag.com/android-battery-test-reveals-droid-x-lasts-longest-amoled-handsets-trail
Sounds about right to me although I dont think I could get 4.43 hours web. Most screen usaged I have gotten is up in the 3hour range.

I've done this on my captivate.. and I think it made it a little worse..
to be honest.. just leave it be and charge when you can.. lol hope for the best!
maybe other people will have better luck..

Many people also seem to have success with fully discharging their battery before charging it again for the first 2-3 times. Seems the battery learns its 'boundaries'. Many are reporting 20-30 hours after that with moderate usage.

mterrence5 said:
If you go to the actual Laptop magazine post it explains
The test itself is fairly simple. Avram, our tireless Web director, modified the LAPTOP Battery Test we use for notebooks, and created an Android App that does much the same thing: It opens the phone’s Web browser to one of 60 popular Web sites, remains there for 60 seconds, closes the browser, then reopens the browser to next Web site on the list. It does so until the phone’s battery dies, all while recording the time elapsed.
Here’s how we set up the phones before we tested them:
First, we download My Settings and Advanced Task Killer, two free apps that are useful regardless.
Then, we open My Settings, and do the following:
Turn screen brightness to 40%, and turn off auto brightness.
Turn off Wi-Fi, Bluetooth, GPS location, cell location, and auto sync.
Deactivate screen timeout; that is, make sure the screen stays on indefinitely.
In the Web browser, we turn off Flash support and plug-ins.
We placed the phone in an area that was receiving at least 4 bars of service.
http://blog.laptopmag.com/android-battery-test-reveals-droid-x-lasts-longest-amoled-handsets-trail
Sounds about right to me although I dont think I could get 4.43 hours web. Most screen usaged I have gotten is up in the 3hour range.
Click to expand...
Click to collapse
I think that turning all of the screens to 40% brightness invalidates the results. To equal the playing field, the screens should be set to equal luminance.

My battery meter has been flashing 0 for 10 minutes now. Should I be worried? Should I return my phone? True story.
Sent from my SAMSUNG-SGH-I897 using XDA App

Still here. Battery hasn't died.
Sent from my SAMSUNG-SGH-I897 using XDA App

Improve Battery Life In Ace

We always neglect the way we charge our mobiles, it’s very important to equally take care of your phone’s battery along with your phone. So, when it comes to the charging then you will have to ensure that you never overcharge your phone which means that never put your phone for charging over night as this may hamper the battery’s life very badly due to which you may even end up spoiling battery sooner than expected. It hardly takes 3 hours for phone to fully charge, so never charge your phone more than this time.
Also, many of the users tend to charge their phones regularly, like even if battery goes below 50-40% people tend to haste and put the phone up for charging. So unless and until you are going away from the charging point, it’s not a wise decision to charge it way ahead than the battery zeroing point. Make use of the AC chargers rather than using the USB points for charging the phone as basically the USB charging does the trickle charging which is not good for often charging the phone.
All batteries has the Golden color notch pins and with frequent pull outs these notches become loosely fit and are rubbed with the pins which leads to the wear and tear of the contacts and hence it decreases the life of the battery and the effective charging of the device is not passed on to the phone as the contacts in the form of pins gets loosen up. And also last but not the least never make use of the batteries which are not as per the prescribed specification chart which comes along with the phone and always use original batteries which can be purchased from Samsung.
Never put additional sim cards or anything like that in the compartment of the battery as this may cause some serious issue with the battery and may even explode at an extreme situation as every battery generates heat and it requires space to dissipate that heat and if its interrupted then it can be dangerous for batteries.
Unless and until you are not using the actual 3G Service, it’s better to choose the GSM Mode network rather than selecting Dual mode or the WCDMA Mode which drains the battery faster than the GSM mode.
Make sure that you set the brightness of the device to automatic and not to the fullest which is set by default, since it’s a touch screen phone back light should be not more than 15 seconds as that’s more than enough which can be done by going to HOME > MENU > Settings > Display > Brightness and Screen timeout
Make sure that You Tube, music listening, programs which runs in the background including the Sync option along with Bluetooth should be turned off whenever necessary as these too constitutes fair amount of battery drain.
GPS as well as the Camera eats up a lot of battery, so always remember to switch these both off when not in use or necessary and specially when battery is low then it’s advised to not to use these features which can be quickly done by setting the widget shortcut on the home screen itself, touch and hold on the Home Screen in the blank area and not on any app icon and select Widget>Power Control. Add this Widget to your home screen to choose the express settings

Copy and pasta.

Printerscape said:
Copy and pasta.
Click to expand...
Click to collapse
El spamola?

Nice post, incredibly informative!
Sent from my Desire HD using XDA Premium App

OP,
WTF - you can't overcharge your battery. The ROM/kernel doesn't allow it. The closer the battery gets to 100% the voltage is decreased further and further. At 100% there is just a small trickle that roughly breaks even with the demand of the phone. Telling people they shouldn't leave their phone plugged in for more than 3 hours is ridiculous. There was just a thread on here a couple of weeks ago where an AT&T employee told someone the same thing, and everyone was making fun of how stupid that advice was.

^+1 !!!!!!!!!!!!!!!!

Sorry, OP. You are passing off bad information.

Thread closed.

What can I do to increase battery life on my Android phone?

What can I do to get better battery life on my Droid? Battery life seems awful. Less than 15 hours or so on normal usage.

lower the backlight to as low as you can, turn off GPS, WiFi, sound, kill some processes, go to airplane mode, dont multitask.

is there any software just 1 click to do that ?

Try Juice Defender

garychencool said:
lower the backlight to as low as you can, turn off GPS, WiFi, sound, kill some processes, go to airplane mode, dont multitask.
Click to expand...
Click to collapse
What for buy the phone if you can't use all these features??!!

Ok, how can I better the battery life meanwhile I can enjoy the features of my droid？

For me, I keep wifi, sync, Bluetooth on 24/7. Then put my 3g to 2g only. Turn off GPS. Let android auto setting brightness. Under the moderated use (few hours of web browsing. Calls less then 30 mins. And half an hour games) it can last one and half days. I turn on GPS and 3G only if I needed. I think besides screen they are the biggest power hunger monsters. 2G is enough to sync your data. If you pre cache your maps. It's okay to use for navigation as well. Hopefully this can help.
Sent from my Nexus S using xda premium

Increase Time between Charges:
1. Switch the vibrate function off on your phone, using just the ring tone.
The vibrate function uses additional battery power. Keep the ring tone volume as low as possible.
2. Avoid using unnecessary features.
If you know it will be a while before your phone’s next charge, don’t use the camera or connect to the Internet. Flash photography can drain your battery especially quickly.
3. Turn off Bluetooth.
It will drain your battery very quickly.
4. Avoid using moving or animated pictures or videos for your background. Animated backgrounds will drain the battery faster.
Here are some tips to prolong the life of your battery:
1. Initialize a new battery.
New batteries should be fully charged before their first use to obtain maximum capacity.
2.Keep the battery cool.
Put the battery in the freezer or fridge. (I know it sounds weird...)
Your battery will last longest if used near room temperature, and nothing wears on a battery like extended exposure to high temperatures. While you can’t control the weather, you can avoid leaving your phone in a hot car or in direct sunlight, and you don’t have to carry your phone in your pocket, where your body heat will raise its temperature.
3.Clean the battery contacts on the battery and on the phone.

Europa. said:
1. Initialize a new battery.
New batteries should be fully charged before their first use to obtain maximum capacity.
Click to expand...
Click to collapse
I agree with you all but this one. I do not think you need to initialize your li-ion battery. I will post a link to backup myself when I get to my PC.
Sent from my Nexus S using xda premium
updated: Here is the link explains about batteries!
http://batterydata.com/

When I first got my Droid X, it wouldn't last a day. What I did was to FULLY discharge the battery and FULLY charge it (not using phone during charge) and and after about 4 cycles like this, I can get about 2 days 24x7 life on the battery.

Rootstonian said:
When I first got my Droid X, it wouldn't last a day. What I did was to FULLY discharge the battery and FULLY charge it (not using phone during charge) and and after about 4 cycles like this, I can get about 2 days 24x7 life on the battery.
Click to expand...
Click to collapse
That is very interesting. I think this is about Android needs time to learn what is the real capacity of the battery. What you stated actually happens when you flash a new rom. That's also why it usually take a few days to tell the battery consumption when a new fw released.
Sent from my Nexus S using xda premium

Just use your phone as you like, and when you go to sleep, put it on the charger, so you enjoy your phone the whole day
At least, that's my trick. I use my Desire S from 6.30 till 22.30 (when i'm awake), and when i go to bed, its around 20 percent on stock ROM.
Your ROM, kernel and radio can really affect your battery life, For example, when i'm on Cyanogenmod, with CM kernel, i can use my device two days, and on the stock Sense 3.0 ROM it lasts one day. Play with these three, and see what fits you best.

disable voice call

Battery kinda sucks!!

Hey guys a couple a days ago i flash to my phone the stock 2.3.6 the kj1 kernel and the adrenaline shot v2. My phone works great but my battery its horrible. Is this because of the adrenaline thing??
Sent from my SGH-T959V using XDA App

Calibrate your battery then give it a few days...
Sent from my SGH-T959V using XDA App

Also... flash kj6.... you are behind the times. Kj6 mostly has wifi fixed.
Sent from my SGH-T959V using XDA App

Exactly what Calamus said. I'm running KJ6, drhonk's KJ1 kernel, and Adrenaline Shot v12. I calibrated my battery (there are apps for that in the market), and my battery life is pretty good.
If I'm heavily using my phone I get a bit over half a day of battery life. That's with really heavy use (wifi calls, texting, XDA app, and other apps being used). With normal use it'll last me a day.

Im in the kj6 stock the kj1 is the kernel. Im going to look the calibrate app to see if my battery last longer. But for example sometimes i have to chrage my phone twice a day. I never let the battery drain completly if i know the battery is in 20% i charge the phone. This can happend to me twice a day. I dont talk so much i do txt a lot and use in a normal way some apps, games and wifi.
Sent from my SGH-T959V using XDA App

daworship said:
Im in the kj6 stock the kj1 is the kernel. Im going to look the calibrate app to see if my battery last longer. But for example sometimes i have to chrage my phone twice a day. I never let the battery drain completly if i know the battery is in 20% i charge the phone. This can happend to me twice a day. I dont talk so much i do txt a lot and use in a normal way some apps, games and wifi.
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
I've noticed wifi eats the battery quite a bit. I'd suggest turning it and other features off if you're not using them. I keep bluetooth & GPS off all of the time. I have wifi on when I'm at home as I get better coverage than on the carrier network.
Give it a few days after you calibrate it as it takes a little time for it to level out.

"Juice defender" in the market. Free version works well. paid gives a few more features. I would re calibrate after install. I have no problems getting a full day with moderate to heavy use.
Sent from my SGH-T959V using XDA App

I agree....my battery life is horrible!! I should have just bought another phone!
Sent from my SGH-T959V using xda premium

jager555 said:
I agree....my battery life is horrible!! I should have just bought another phone!
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse
Lol and I'm still on froyo
Sent from my SGH-T959V using XDA App

I have been messing with juice defender and im running alot better i calibrated battery then i set up app i has lots of options like shut down at night or kill connectivity when off. If not try octane rom that gave me great batt i would run 4 hrs of sat radio and still have 40% battery after
Sent from my SGH-T959V using XDA App

Did the calibrate battery app and manage to turn off some things in my phone and i do see some good changes in my battery life overall, this is an ok device Tmobile has launch or is soon to , some really good phones but right now the only choice that i could think of is the galaxy s II i saw a video of a phone fight between the galaxy s II and the iphone 4s and the iphone won in so many ways, but till this day and looking forward to android 4.0 im a Android fanatic 100%

An architect buddy of mine who is a big iPhone guy ( iPhone 1 to new iPhone 4s recently) was playing around with my sgs4g a week or so ago, it was the first Android phone he had ever messed with. He was taking about how great his iPhone battery life was (true) when i got a facebook notification come through, followed by a twitter notification, while he was using the imdb app. "Your phone can do more than one thing at a time?" He asked....
"Sure, yours can't?" i asked in return.
"No, i gotta physically open Facebook to check messages, then close it afterwards." He said.
"Wow that really sucks, i see why your battery life is so great though." I commented.
.....silence...."F this I'm buying an Android" he said, and he did....a galaxy s2 and he said it pwns the iPhone 4s he just bought and traded. True story.
I guess its a tradeoff, great battery life or ultra versatile multi tasking usability. I understand that some people do prefer the iPhone, and they are great...if that's what you want....but for a review to state an iPhone 4s beats a galaxy s2 in almost every test is laughable and i would have to question the reviewers reliability and validity.
Once you get the phone set up right, undervolted etc the battery life is quite acceptable considering its performance. I have got almost 2 days with light use, and can comfortably get 8 to 9 hours with heavy use.
Sent from my SGH-T959V using XDA App

The tips that I picked up on is:
Disable any OC and/or non-standard governor, don't run too many apps while charging.
Charge the phone up completely
After it is charged completely, your calibration app should show you the mVh, unplug the power wait a second and plug it back in. Mine usually gets to 4203 (or something like that. I don't have my phone back yet.). If you don't use a calibration app, spareparts should show you mVh level.
Then delete the baterystats.bin. Disconnect charger, and let the phone drain until it dies.
When it is dead. Plug it into the charger and don't touch the phone until it is fully charged. OC and non-standard governors should still be disabled or at their defaults.
After it is fully charged, use your phone like normal (again, no OC etc...), let the phone die all the way again.
Charge the phone up all the way again.
re-enable OC and/or governors.
baterystats.bin is a log of the phone's battery usage and capacity. I've also been told to do steps 6-7 over and over to get more log information into baterystats.bin to get a more reliable battery charge.
Hope this helps.

htaak said:
He was taking about how great his iPhone battery life was (true)
Click to expand...
Click to collapse
I thought the iPhone 4S has **** battery life. That's why everyone was complaining about it, right?

bhundven said:
The tips that I picked up on is:
Disable any OC and/or non-standard governor, don't run too many apps while charging.
Charge the phone up completely
After it is charged completely, your calibration app should show you the mVh, unplug the power wait a second and plug it back in. Mine usually gets to 4203 (or something like that. I don't have my phone back yet.). If you don't use a calibration app, spareparts should show you mVh level.
Then delete the baterystats.bin. Disconnect charger, and let the phone drain until it dies.
When it is dead. Plug it into the charger and don't touch the phone until it is fully charged. OC and non-standard governors should still be disabled or at their defaults.
After it is fully charged, use your phone like normal (again, no OC etc...), let the phone die all the way again.
Charge the phone up all the way again.
re-enable OC and/or governors.
baterystats.bin is a log of the phone's battery usage and capacity. I've also been told to do steps 6-7 over and over to get more log information into baterystats.bin to get a more reliable battery charge.
Hope this helps.
Click to expand...
Click to collapse
batterystats.bin is a log file - true... deletion of that file has nothing to do with calibration - it's a myth.
Android is reading SOC (state of charge) battery from fuel gauge chip. It happens this chip calculates remaining capacity wrong - so it needs to be calibrated.
Proper method depends on type of that chip. With old, colomb type of fg, you would indeed required to make a full discharge followed by full charge in order to let the chip now of how many mAh battery can get in.
Modern fg is using math model which can predict / calculate capacity based on open-circuit voltage measurements. So you don't need to stress your battery with full charge/discharge cycle.
Again, 'calibration apps' do nothing more but delete that log file - this is not how fg chip got it's calibration.
It's interesting topic - battery, current consumption, calibration. It's surrounded with that myth about batterystats.bin and various 'calibrator apps' built on top of it.
I just cannot resist this time from commenting this "facts".
---------- Post added at 11:49 PM ---------- Previous post was at 11:38 PM ----------
On topic - my sgs4g with KD1 rom, rooted, debloated standby time with wifi, 4g off, only GSM voice and SMS can lasts 5-7 days.
Some normal use - 2 days,
Reading ebook non-stop - 8 hours,
music or audio-books - 15-20 hours.
Netflix, internet on wifi non-stop - 5 hours.

bkoon1218 said:
I thought the iPhone 4S has **** battery life. That's why everyone was complaining about it, right?
Click to expand...
Click to collapse
I'm honestly not sure man. He only had it for a few days, and I don't really follow Apple. Sounds right though, if Apple gave it more "umph" you would expect the battery life to suffer.

some people were reporting issues with battery drain on the 4S, but a lot depends on how you have notifications/sync setup, and I believe apple is working on a patch.
Same thing goes with the SGS4G. First thing you want to do is check your accounts and sync. I leave Facebook turned off. It only syncs if I actually open it and log in. I only have my gmail account syncing, and it's set to sync only once an hour (using juice defender to do this).
Otherwise, wifi, BT, and GPS are off unless I am using them. I regularly get between 3 and 4 days out of a charge with light use.
Also, I've never calibrated my battery.

Vlad_z said:
batterystats.bin is a log file - true... deletion of that file has nothing to do with calibration - it's a myth.
Android is reading SOC (state of charge) battery from fuel gauge chip. It happens this chip calculates remaining capacity wrong - so it needs to be calibrated.
Proper method depends on type of that chip. With old, colomb type of fg, you would indeed required to make a full discharge followed by full charge in order to let the chip now of how many mAh battery can get in.
Modern fg is using math model which can predict / calculate capacity based on open-circuit voltage measurements. So you don't need to stress your battery with full charge/discharge cycle.
Again, 'calibration apps' do nothing more but delete that log file - this is not how fg chip got it's calibration.
It's interesting topic - battery, current consumption, calibration. It's surrounded with that myth about batterystats.bin and various 'calibrator apps' built on top of it.
I just cannot resist this time from commenting this "facts".
---------- Post added at 11:49 PM ---------- Previous post was at 11:38 PM ----------
On topic - my sgs4g with KD1 rom, rooted, debloated standby time with wifi, 4g off, only GSM voice and SMS can lasts 5-7 days.
Some normal use - 2 days,
Reading ebook non-stop - 8 hours,
music or audio-books - 15-20 hours.
Netflix, internet on wifi non-stop - 5 hours.
Click to expand...
Click to collapse
Based on this post, how do you verify that your SGS4G is actually measuring open-circuit voltage accurately and how would you make appropriate adjustments?.... assuming that the hardware is tweakable. Is there some kind of software / linux / adb command available?

htaak said:
Based on this post, how do you verify that your SGS4G is actually measuring open-circuit voltage accurately and how would you make appropriate adjustments?.... assuming that the hardware is tweakable. Is there some kind of software / linux / adb command available?
Click to expand...
Click to collapse
Regarding calibration I have some research done here
http://forum.xda-developers.com/showthread.php?t=1215182
It's possible to initiate / write down to the fg chip but for it some kind of jig cable needed or modified kernel. But fg chip designed that way it can do recalibration on its own with some time and normal usage pattern.
Open-circuit voltage chip would consider when battery is at rest and voltage change less then some mV per hour. When device is in deep sleep - conditions might be right (if there is no background activity) . To make sure - just shutdown device for couple hours. Chip is connected to the battery regardless.

Vlad_z said:
Regarding calibration I have some research done here
http://forum.xda-developers.com/showthread.php?t=1215182
It's possible to initiate / write down to the fg chip but for it some kind of jig cable needed or modified kernel. But fg chip designed that way it can do recalibration on its own with some time and normal usage pattern.
Open-circuit voltage chip would consider when battery is at rest and voltage change less then some mV per hour. When device is in deep sleep - conditions might be right (if there is no background activity) . To make sure - just shutdown device for couple hours. Chip is connected to the battery regardless.
Click to expand...
Click to collapse
I read the link you posted and will give it a whirl, thanks for the info man.
Sent from my SGH-T959V using XDA App

Check for battery drain in my OP7 Pro

Hi everyone!!
I'd like to get some advice about my issue that I've been having for a while...
My battery drain is what you may see in my attachments. Please tell me some good advice to reduce this drain or whether it is normal functioning either...
In conclusion, I'd like to know if it might be convenient to replace the battery and, furthermore, whether there are larger batteries with more autonomy.
My phone is 2 years and half old but to be honest I use it intensively with its battery-case (manufacturer: Newdery).
Thanks!!!

Sorry for late reply, just saw this.
You get 6 hours of battery life with 14% screen on time? That doesn't sound to correct.
My suggestion would be to install the app: AccuBattery. I swear by it - it is very good I think. It will watch your apps much better than the stock android battery monitor. It will also tell you your battery health, the mAh left out of the total of 4000. If you have a very low amount left (capacity wise) then you may want to get a new battery. But make sure to do several charges before taking it as accurate. Use the app for several days, even the little "notes" in the app will tell you this - it's to "acclimate" to your use and give you more accurate statistics.
Hopefully this helps - 6 hours is definitely not good.

theslam08 said:
Sorry for late reply, just saw this.
You get 6 hours of battery life with 14% screen on time? That doesn't sound to correct.
My suggestion would be to install the app: AccuBattery. I swear by it - it is very good I think. It will watch your apps much better than the stock android battery monitor. It will also tell you your battery health, the mAh left out of the total of 4000. If you have a very low amount left (capacity wise) then you may want to get a new battery. But make sure to do several charges before taking it as accurate. Use the app for several days, even the little "notes" in the app will tell you this - it's to "acclimate" to your use and give you more accurate statistics.
Hopefully this helps - 6 hours is definitely not good.
Click to expand...
Click to collapse
Hi!!
Thank you very much for your reply!
I forgot it but I already had Accubattery installed on my phone.
In fact, in attachment you have the battery wear data from April 2021 till now..
I hope that I shared you useful data to analyse the issue.
What do you think? What should I take from the app?
I thought that the new Android version 11 is the cause of battery drain as another phone (Xiaomi Redmi Note 10) suffers from it after the upgrade to Android 11..

umby75 said:
Hi!!
Thank you very much for your reply!
I forgot it but I already had Accubattery installed on my phone.
In fact, in attachment you have the battery wear data from April 2021 till now..
I hope that I shared you useful data to analyse the issue.
What do you think? What should I take from the app?
I thought that the new Android version 11 is the cause of battery drain as another phone (Xiaomi Redmi Note 10) suffers from it after the upgrade to Android 11..
Click to expand...
Click to collapse
No prob
Could you take an [extended/full] screenshot of the "Discharge" tab? That will show more info about which app is draining more. Also those numbers change I believe on every charge so you'd have to just keep an eye on which app is always at the top of the section under "Foreground App Battery Usage > Battery Usage" section. Hopefully it isn't just "system" or something, hopefully it is an app that you can remove/freeze.
And what does it say for Battery Capacity above the "Battery Wear" chart?
And speaking of the wear chart, you'll want to stop charging all the way to 100%, it looks like you're putting over 1 cycle of wear on the battery very often which will degrade the battery quicker. The 'Charging" tab explains this even allowing you to set a reminder to unplug at a certain charge level (it tells you the higher you charge the more wear you put on the battery - unfortunately that's how batteries work).

theslam08 said:
No prob
Could you take an [extended/full] screenshot of the "Discharge" tab? That will show more info about which app is draining more. Also those numbers change I believe on every charge so you'd have to just keep an eye on which app is always at the top of the section under "Foreground App Battery Usage > Battery Usage" section. Hopefully it isn't just "system" or something, hopefully it is an app that you can remove/freeze.
And what does it say for Battery Capacity above the "Battery Wear" chart?
And speaking of the wear chart, you'll want to stop charging all the way to 100%, it looks like you're putting over 1 cycle of wear on the battery very often which will degrade the battery quicker. The 'Charging" tab explains this even allowing you to set a reminder to unplug at a certain charge level (it tells you the higher you charge the more wear you put on the battery - unfortunately that's how batteries work).
Click to expand...
Click to collapse
Hi, thank you for your reply!!
I'm sorry for my late replies..
In the attachments you have what you asked me.
It seems that Facebook drains the battery a lot despite the fact that I don't use it much.
The battery wear seems to be almost one fifth of total capacity for a capacity of about 3200mhA.
I'd like to have something better...
I have set at 83% the alert to reduce the wear of the battery but I wonder how it could work fine when the phone is turned off..

No problem
So, I'm not exactly sure how you use your phone but it looks like the screen-on at 23%/hr looks pretty bad but then also it says combined time was 102 hours? I believe that means how long it's been off the charger. If that's the case you can't get any better battery life than that, that is really really good.
You mention facebook doing a lot of draining. Try researching a good app freezing option on the app store. I only did a quick search but this one came up: https://play.google.com/store/apps/details?id=com.catchingnow.icebox but read the reviews (I did a quick scan and it looks like it might work as intended) and look around maybe there is a better one. But the point of this is, to freeze any apps in that list (the accubattery foreground apps) you barely use and it will prevent them from running in the background. This will definitely give you better battery life.
And I don't see the deep sleep statistic, is that around 90hrs along with the screen off time? It should be more than the screen off time at least, because if it is then it is deep sleeping correctly (no rouge apps causing it to not deep sleep), but if it's less than the screen off time, then something (maybe facebook) is keeping the phone awake even with the screen off, causing extra battery drain.
And 83% charge is pretty good, maybe even 75% might be better, I think from 0 to 75 it's like .3 or .4 wear but it's like with these batteries once you start going over 75% it jumps in wear dramatically. And if the phone is off (turned off completely you mean?) then the battery won't gain any wear because it won't be in use at all.

theslam08 said:
No problem
So, I'm not exactly sure how you use your phone but it looks like the screen-on at 23%/hr looks pretty bad but then also it says combined time was 102 hours? I believe that means how long it's been off the charger. If that's the case you can't get any better battery life than that, that is really really good.
You mention facebook doing a lot of draining. Try researching a good app freezing option on the app store. I only did a quick search but this one came up: https://play.google.com/store/apps/details?id=com.catchingnow.icebox but read the reviews (I did a quick scan and it looks like it might work as intended) and look around maybe there is a better one. But the point of this is, to freeze any apps in that list (the accubattery foreground apps) you barely use and it will prevent them from running in the background. This will definitely give you better battery life.
And I don't see the deep sleep statistic, is that around 90hrs along with the screen off time? It should be more than the screen off time at least, because if it is then it is deep sleeping correctly (no rouge apps causing it to not deep sleep), but if it's less than the screen off time, then something (maybe facebook) is keeping the phone awake even with the screen off, causing extra battery drain.
And 83% charge is pretty good, maybe even 75% might be better, I think from 0 to 75 it's like .3 or .4 wear but it's like with these batteries once you start going over 75% it jumps in wear dramatically. And if the phone is off (turned off completely you mean?) then the battery won't gain any wear because it won't be in use at all.
Click to expand...
Click to collapse
I noticed that I didn't make all the screenshots, but now I've just done them with regards to this new discharge cycle and you have the deep sleep statistics for a better analysis - they are in attachments.
I asked here for a longer battery lasting and instead I set it as 75% as the maximum percentage value of charge that reduces my autonomy but saves the battery.
However, yesterday I noticed that the charging wasn't deactivated when the phone reached 80% of charge (is the value that was set yesterday). Oughtn't Accubattery deactivate the charging?
The statistics you mentioned in your previous post appear to me a bit awkward even though they are related to many sessions in the last 7 days.
I use my phone with my phone case-battery (Newdery manufacturer) and until few months ago it could charge the phone up to about 80 % when I couldn't charge my phone through its charger. I need the charge to last a day, almost 20 hrs…
I noticed that the phone started to wear - the last few months - when I noticed that I couldn't have the phone working till the late evening and I tried to charge it fully before I left my house...
However, it is clear what I need for my use and habits, thus, new reliable battery-case suggestions would be a good hint for me...
In the end, I don't know what to do about apps that manage the apps freezing because I don't know how Android allows it and if it is worth it..