Database Users

Samusng Galaxy S2 horrible battery.

Hey guys, I recently got a Samsung Galaxy S2 (over 2 months ago)
At first it was really good with battery life, lasting over a day with medium use.
It started to get really bad, draining down from 100% to 50~ over night with no use at all.
I searched the problem and came across these forums, which said 2.3.3 was a problem sometimes.
Now this is also my first android phone, so I'm not sure exactly how to do all the tinkering around with it. Long story short, I found that changing to 2.3.4 helped a lot. It did, for 2 days, now I'm getting the same problem again. Maybe I didn't do it right? Need help! (also this forum is huge, not sure if I'm in the right spot)

Have you tried flashing a custom ROM and kernel? Pick out a ROM that you like and then install a nice kernel like Speedmod. Lite'Ning ROM v6.1 and Speedmod T39 together really increased my battery life.

Is there like a "how to" section on this site somewhere?
As I said, this is my first Android phone, so I'm a little lost as to how it all works

Klutar said:
Is there like a "how to" section on this site somewhere?
As I said, this is my first Android phone, so I'm a little lost as to how it all works
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1095274 lightning rom 6.1 i have found that after flashing some uk apps itv player is blocked for downloading but u can downlaod it before u install and the 4 od website dont work
FOLLOW INSTRUCTIONS AND LEAVE ODIN AS DEFAULT. DO NOT UNPLUG USB CABLE DURING UPDATE OR YOU CAN BRICK YOUR PHONE. YOU ALSO NEED SAMSUNG KES INSTALLED FOR USB DRIVES CLOSE KIES WHEN USING ODIN

Thanks for the help guys.
I "think" I rooted my phone and got a version of 2.3.5, which is also supposed to be better on the battery?

just download 'start up manager' from the market, disable useless stuff that is not need ed, I get more then, a day now worth normal use.
Sent from my GT-I9100 using xda premium

tandeh said:
just download 'start up manager' from the market, disable useless stuff that is not need ed, I get more then, a day now worth normal use.
Click to expand...
Click to collapse
Or also get titanium backup, and freeze all the useless crap on the phone that you dont use. I did that and it went from 7% every hour (despite the fact that there were no wakelocks) down to 0.5% every hour
EDIT- on standby/very little use, that is.

Also after you flash charge your battery to 100percent and calibrate your battery there is a good free app in the market
Sent from my GT-I9100 using XDA App

Well if you're using its smart phone capabilities it will really drain quickly. Specially when on data. What I did was to get an extra variety and an external battery charger-best investment for this phone ever.
Sent from my GT-I9100 using XDA App

You can also see what drained your battery by going into battery usage: Menu - settings - about phone - battery usage. or create the shortcut on your desktop.

download betterbatterystats to check what processes are burning your battery and stuff. helped me a lot, this app.

Given that you are getting decent performance for a bit, which then drops off, I'd say it was far less likely that the cause was the hardware or the ROM and far more likely that it is something you are doing with the configuration or software.
Try removing any widgets you have added - does that improve battery life? If so, add them back one at a time until you find the culprit. Also, make sure you are not signed into stuff like Latitude - that is an absolute battery killer.
You have seen that you can get decent life from the battery, now you just need to work out what affects that.

It was the 2.3.4 OS draining the battery. I wouldn't touch my phone, and in 8 hours it went from 100% to 20%, with the status saying Android OS 100% in battery usage.
Now I'm on 2.3.5, battery is at 95% after 4 hours.
I'll give it a few days, and see exactly how it goes and if there is a substantial difference in battery life in relation to use.

I almost had the same problem with the battery but i flashed omega rom and so far i have no problems! I always have wifi on when i am at home and 3g when i am not at home and the phone can run up to 2 days!

Have you tried doing a basic search and looking at one of the 100's of other threads crapping on about battery life?

<deleted> sorry

galaxy s2 i9100 Battery Problem!
I am using Samsung Galaxy s2 for a while and I am facing an extremely low Battery Back up. Around 9-10 hrs to the max. I got the battery changed from the Samsung service center and have tried changing alot of different firmwares.
KE4 -> KE7 -> KF3 -> KH3 -> KI3 -> Simple and clean 1.2 KI4.
Nothing works.
I am attaching my "Battery Usage" images along. Please find a solution for me. Thank you.

Calibrate your battery, but you must have root access. When you have root than load the calibrate app.

i am quite heavy users on my sgs2 at first i had battery problem lasting only 5 - 7 hours... i got juice defenders free version from market and well it didnt boost my battery life to 48+ but it did made me last 1 and half day

New battery stats!!
Alright I experimented with the battery to check whether there is a problem with my battery or my firmware/kernel.
I tried the same battery on 2 different Galaxy s2. Battery stats below :
DEVICE 1:
Firmware : Stock KF3 Rooted
Kernel : Stock KF3
Battery Usage : 14hrs
Display : 45mins
Voice Calls : 1hr50mins
Battery remaining: 50%
DEVICE 2:
Firmware : Simple & Clean v1.2
Kernel : SpeedMod k2-18 test3
Battery Usage : 12hrs
Display : 45mins
Voice Calls : 2hrs
Battery remaining: 19%
Now in the above case I have used the same 1650maH battery in 2 different handsets. So why so much difference in battery life on an almost similar usage when I also made sure that the Brightness levels of both the phones also remain same.
Please help me out on this.

[Q] Battery Life

Hello Guys,
I have a new Samsung Focus, around 3 days old.. I have been given a 1650 mAH battery. The battery life is terrible, discharges like 10% in one hour with hardly any usage with Wifi OFF, Edge ON, auto brightness and all the power saver methods applied.
Should i charge it overnight or something ? Like 12 hours at a stretch or something?
Pls help

I'd take the battery out and feel it. If it's a Samsung battery, it should be perfectly flat on the sides. I was having terrible battery life, and it was because the battery had gone so bad that it was bulging.

samsungfocus12 said:
Hello Guys,
I have a new Samsung Focus, around 3 days old.. I have been given a 1650 mAH battery. The battery life is terrible, discharges like 10% in one hour with hardly any usage with Wifi OFF, Edge ON, auto brightness and all the power saver methods applied.
Should i charge it overnight or something ? Like 12 hours at a stretch or something?
Pls help
Click to expand...
Click to collapse
Can you please detail your WP7 OS build, if it's an OEM Samsung battery or a generic one? It looks like you have a bad battery, same conditions as yours my one year+ OEM battery holds 3days+
There's also a specific thread for battery life I started a while ago over here

The battery is curved on the left and right sides, flat on the top and bottom. Its a SAMSUNG battery EB575152LU 1650 mAh. I am not sure if its OEM or generic
OS version : 7.10.7720.68
Should i ask the seller to send me a 1500mAh NEW battery? mayb thats causing the issues?
Or I should wait for a few charge cycles to complete?

samsungfocus12 said:
The battery is curved on the left and right sides, flat on the top and bottom. Its a SAMSUNG battery EB575152LU 1650 mAh. I am not sure if its OEM or generic
OS version : 7.10.7720.68
Should i ask the seller to send me a 1500mAh NEW battery? mayb thats causing the issues?
Or I should wait for a few charge cycles to complete?
Click to expand...
Click to collapse
With the infos that you just shared, it looks as the battery has gone bad.
I wasn't aware of an OEM battery 1650 mAh, see my reply here. Can you confirm it looks like that or maybe post a photo of it?
Keep in mind that cheap batteries look like those but there are significant differences, but you'd need an original battery for comparison.
Even one of my chinese cheap batteries still holds 70-80% of the regular battery... (that's 2+ days in the conditions you mentioned above)

It looks just like the one in your post, except for 1650mAh. Looks like original/OEM Samsung.. will send pics once i get home.
Morning charge was at 100% . Hardly any usage, some amount of whatsapp texting, now phone is switched off
The seller has agreed to send a replacement battery. I am just hoping that it is not a phone fault or Mango update screwed it up. Can it be a phone issue?
Checked on amazon, one guy said The battery does not hold charge, otehr said that NEAR FIELD COMMUNICATIOn should be written below Samsung, which is not the case in mine.

samsungfocus12 said:
It looks just like the one in your post, except for 1650mAh. Looks like original/OEM Samsung.. will send pics once i get home.
Morning charge was at 100% . Hardly any usage, some amount of whatsapp texting, now phone is switched off
The seller has agreed to send a replacement battery. I am just hoping that it is not a phone fault or Mango update screwed it up. Can it be a phone issue?
Checked on amazon, one guy said The battery does not hold charge, otehr said that NEAR FIELD COMMUNICATIOn should be written below Samsung, which is not the case in mine.
Click to expand...
Click to collapse
7720 has quite good battery life so shouldn't be a phone issue. I have 2 Focuses and both hold about the same and from what I've read so far, only a big hardware problem (like phone overheating) could cause so dramatic battery discharge. Also, weak network signal might cause faster drainage, but not at this rate. You can try switching 3G off (lowering to EDGE) and see if it makes any difference.

Hmm.. I even turned off 3G. Let me check again.
If I install any customs WP7 roms , will it make a difference.?
I 'll re check once i get the new batteries..
Thanks for your help. Appreciated

samsungfocus12 said:
Hmm.. I even turned off 3G. Let me check again.
If I install any customs WP7 roms , will it make a difference.?
I 'll re check once i get the new batteries..
Thanks for your help. Appreciated
Click to expand...
Click to collapse
The dft/miro custom roms offer better battery life, but by a margin, don't expect miracles. Your battery should be able to hold more than a day in your conditions, and I bet that's to blame in your case.
Let us know how it goes with the new battery.

Thanks for your help.
Now, the battery life has increased quite a bit.. getting around 12 hours on a full charge using the same 1650mAh battery . new one is yet to arrive.
Heard 8107 update considerably increases the battery life? but i have ATT uncloked focus in India. If i use ChevronWP7 to unlock it , it gets relocked on zune sync right? I am confused as to "relock" here is whether Carrier relock like I cannot use my local GSM sim here? or developer relock? I am sorry, new to all this

samsungfocus12 said:
Thanks for your help.
Now, the battery life has increased quite a bit.. getting around 12 hours on a full charge using the same 1650mAh battery . new one is yet to arrive.
Heard 8107 update considerably increases the battery life? but i have ATT uncloked focus in India. If i use ChevronWP7 to unlock it , it gets relocked on zune sync right? I am confused as to "relock" here is whether Carrier relock like I cannot use my local GSM sim here? or developer relock? I am sorry, new to all this
Click to expand...
Click to collapse
Read my post here. Ignore any flashing, just understand the steps and what's written there (eg: Flashing, downgrading, upgrading firmware etc does not affect Network Unlock).
Basically, after you unlock with WindowsBreak project, you just need to run steps 3 and 4 there.

what is the most powerful battery out there for our focus??? any suggestion?

alejandroelmej said:
what is the most powerful battery out there for our focus??? any suggestion?
Click to expand...
Click to collapse
Read this post on the battery life thread. It's a Samsung EB625152VA (OEM) battery of 1800 mAh. There are others labelled with more mAh, but many are scams, rebranded.

hi, i got a Samsung EB625152VA (OEM) battery of 1800 mAh.
But it seems the back cover doesnt fit so properly with this battery inside.
Do i need to do any modifications in order to make it fit ?

15% in 1 hour
While surfing in internet via wifi, in 1 hour it drains 15% of battery, is it normal?

aFaridun said:
While surfing in internet via wifi, in 1 hour it drains 15% of battery, is it normal?
Click to expand...
Click to collapse
Continuous browsing/data transfer, yes, it's about normal.

Battery drops suddenly to zero then in complete charge

I have Note 4 SM-910C Unrooted international on stock ROM 5.0.1.
my problem started with battery charging to around 80% then stops or take like 5 hours to reach 100% then when I use the phone battery suddenly drops from 20-30% to zero.
if I remove the battery then reinstall it reads 16-18% but may drop back to zero.
when turned off while charged it charges to 100% normally
It is irrespective of charger/cable i use (2mA).
tried hard reset and battery calibrate (non-root) but no good.
Any help with this problem

aalim said:
I have Note 4 SM-910C Unrooted international on stock ROM 5.0.1.
my problem started with battery charging to around 80% then stops or take like 5 hours to reach 100% then when I use the phone battery suddenly drops from 20-30% to zero.
if I remove the battery then reinstall it reads 16-18% but may drop back to zero.
when turned off while charged it charges to 100% normally
It is irrespective of charger/cable i use (2mA).
tried hard reset and battery calibrate (non-root) but no good.
Any help with this problem
Click to expand...
Click to collapse
Sounds like your battery has gone rogue so you might wanna buy a new battery. A great example why not to buy Note 5 lol.
Maybe it's a bug in your rom build so why don't you try and upgrade from 5.0.1 to 5.1.1.
I have not used stock roms since the s2 days and after using custom roms I have never looked back.

Zionator said:
Sounds like your battery has gone rogue so you might wanna buy a new battery. A great example why not to buy Note 5 lol.
Maybe it's a bug in your rom build so why don't you try and upgrade from 5.0.1 to 5.1.1.
I have not used stock roms since the s2 days and after using custom roms I have never looked back.
Click to expand...
Click to collapse
i have the same problem with my N910F.. at 20% my phone dies.. like today it was 20% dropped to 4% in an instance and then died..
this is happening since upgrading to 5.1.1 (dirty)..
is it possible to fix this with a factory reset ?

Try Battery calibration and battery repair from the store... If it's not doing something, then replace the battery

make sure your battery is fully charged. From dialing interface typing in *#0228# to check battery info and clicked "quick start" at the bottom of the screen, then your battery will drop down quickly, try these steps several times.

inwithyou said:
Try Battery calibration and battery repair from the store... If it's not doing something, then replace the battery
Click to expand...
Click to collapse
any app suggestions ? also i forgot to mention my phone isn't rooted..
p.s. i had a random restart a moment ago.. is this battery related issue ?
thanx.

the same problem N910C.
Any solution?

I have the same problem with Dr.ketan port note 5 rom. I install cm12.1 and bug is gone! Just report

SUNUN said:
the same problem N910C.
Any solution?
Click to expand...
Click to collapse
Yeah, Samsung has a solution. Buy a new phone as they will never update the 1 year old one even though they ****ed it up...
As much as Iove Note family I am more and more pissed with Samsung and eventually will stop buying their ****.... Already done with their watches by the way...

Definitely a degraded battery problem.
I got a new battery and problem now solved.

I have the same problem and already bought a new battery but the issue continues.
(Sorry for my English)

Samsung s7 Edge not compatible with os 6.0.1?

Hello guys!.It's my first time here. So, I have some questions regarding this problem
I bought my S7E around july, and it had amazing battery life, It lasted around 30hours++ but I drained the battery by playing games so I can charge my phone before 5pm(my office hours) to avoid over charging when I go to bed. I even used the best perfomance that time, gps on, gestures on, etc.But still at least it lasted for 27hours.Now, it only lasts for about 12 hours something. Ive never overcharged it. The moment I saw the green led, i plugged off the charger.
Can anyone fix this? well please don't tell me to turn off all the features, I had them on and still I got to use 27hours. I dont know when I did the update, maybe os 6.0.1 is draining the battery?or any suggestion?
Thank you

Go to Settings>Battery and view the usage to see what app is using it much battery.

You can NOT overcharge the battery of your S7 Edge. I've always kept my phones on the charger over night and never had problems. I'm doing that since the HTC Magic (T-Mobile G1). It has overcharge protection. It is NOT good to drain a Lithium-Ion battery down to a few %. A Lithium-Ion battery operates the best when charged >40% and at average room temperature. For more info, visit batteryuniversity.com.

nitrous² said:
You can NOT overcharge the battery of your S7 Edge. I've always kept my phones on the charger over night and never had problems. I'm doing that since the HTC Magic (T-Mobile G1). It has overcharge protection. It is NOT good to drain a Lithium-Ion battery down to a few %. A Lithium-Ion battery operates the best when charged >40% and at average room temperature. For more info, visit batteryuniversity.com.
Click to expand...
Click to collapse
Nope. I never drain my battery.I keep my battery until 20% then charge it directly. I know how to take care of Lion battery. Ive heard about the overcharging protection feature but i'm not sure whether it works.we never know whether that program runs on background or not since we cant track it.

kylelopez20 said:
Go to Settings>Battery and view the usage to see what app is using it much battery.
Click to expand...
Click to collapse
well,i tracked that down but found nothing.all normal. but still 30hours down to 12 is real problem.

chriszzz18 said:
Nope. I never drain my battery.I keep my battery until 20% then charge it directly. I know how to take care of Lion battery. Ive heard about the overcharging protection feature but i'm not sure whether it works.we never know whether that program runs on background or not since we cant track it.
Click to expand...
Click to collapse
Well, then don't charge overnight. You're problem is most likely software related anyway unless your battery is very old and/or you overstressed the battery too often which can't be because the S7 Edge isn't that old and you "...know how to take care of Lion battery". I think you meant Li-Ion but w/e. A defective battery is possible but very unlikely. BTW overcharge protection is not a program. It's a physical thing soldered onto the battery/charger PCB. Hardware. There's one built into the battery and one inside the charger and of course we can track it. You can't because you probably don't have the equipment + knowledge to test it. If you're so concerned, you should really read about it. After all, you're dealing with a highly reactive metal.

nitrous² said:
Well, then don't charge overnight. You're problem is most likely software related anyway unless your battery is very old and/or you overstressed the battery too often which can't be because the S7 Edge isn't that old and you "...know how to take care of Lion battery". I think you meant Li-Ion but w/e. A defective battery is possible but very unlikely. BTW overcharge protection is not a program. It's a physical thing soldered onto the battery/charger PCB. Hardware. There's one built into the battery and one inside the charger and of course we can track it. You can't because you probably don't have the equipment + knowledge to test it. If you're so concerned, you should really read about it. After all, you're dealing with a highly reactive metal.
Click to expand...
Click to collapse
Well that's why i charge my phone at my office:crying:
i wonder if the OS is the problem. I've heard about drivers not compatible on s7 using 6.0.1 so the background data keeps working such as gear vr service. It wasnt there before. and OM Customize. So, if i overstressed my battery, it will damage my battery? I did that before to charge my phone between morning to evening.

chriszzz18 said:
Well that's why i charge my phone at my office:crying:
i wonder if the OS is the problem. I've heard about drivers not compatible on s7 using 6.0.1 so the background data keeps working such as gear vr service. It wasnt there before. and OM Customize. So, if i overstressed my battery, it will damage my battery? I did that before to charge my phone between morning to evening.
Click to expand...
Click to collapse
You're hearing really weird things buddy The S7 Edge has always been running Android 6.x.x. It never ran any other Android version. The drivers are fully compatible. In fact, the drivers on a Samsung are as compatible as drivers can get, since SoC, Camera Sensor and many other parts of the phone are coming from the same manufacturer; Samsung.
My guess, and I can only guess since we'd have to see your battery stats for more detailed explanations, is that you either ran into the Android System-, or Google Play Services battery drain bug that occurs after an OTA update. These problems date back all the way back to the Galaxy S2.
I'd recommend you first flash a stock ROM using the "HOME_CSC" file. This will NOT wipe anything from your phone. Only the core system and stuff will be reinstalled. If you still have this problem, try flashing a stock firmware using the regular "CSC" file. Always make a backup first. The regular CSC file will WIPE EVERYTHING from your phone, including internal storage but it won't touch you MicroSD. Now you start with a freshly installed Android and see if it solved your problem.

nitrous² said:
You're hearing really weird things buddy The S7 Edge has always been running Android 6.x.x. It never ran any other Android version. The drivers are fully compatible. In fact, the drivers on a Samsung are as compatible as drivers can get, since SoC, Camera Sensor and many other parts of the phone are coming from the same manufacturer; Samsung.
My guess, and I can only guess since we'd have to see your battery stats for more detailed explanations, is that you either ran into the Android System-, or Google Play Services battery drain bug that occurs after an OTA update. These problems date back all the way back to the Galaxy S2.
I'd recommend you first flash a stock ROM using the "HOME_CSC" file. This will NOT wipe anything from your phone. Only the core system and stuff will be reinstalled. If you still have this problem, try flashing a stock firmware using the regular "CSC" file. Always make a backup first. The regular CSC file will WIPE EVERYTHING from your phone, including internal storage but it won't touch you MicroSD. Now you start with a freshly installed Android and see if it solved your problem.
Click to expand...
Click to collapse
Hello mate,I am sorry for my late reply since I gave up. I am trying to solve this again.
Well, can you tell me where can i get the stock firmware? I am from Indonesia(well I think some parts of the continents have different firmware).I wanted to flash it tho but I am afraid I got some "hacked" firmware.
well,the battery usage looks normal to me.
google play services around 5-15%
android OS 15-20%
android system 15-20%
but still,it drains too much>,<
Let me try to upload a pict of it.
Additional information : Slept 8 hours while listening to music and it drained from 55% to 2%.I mean this is really insane.That's why I am taking serious action now. The first time I bought it with the same settings and apps + I turned on always on display and night clock while listening to the music for 8 hours of sleeping,it only drains 10-20%.
I took this ss because I got 30hours on time : link
these are the drained ones.15Nov and 9 Dec
15Nov
9Dec
Thank you mate

First out of all. How much SOT (Screen On Time) do You get?
To check that go to battery usage at the end of the day or when You have 20% and in battery usage tap on screen and take a screenshot.
Second.
Certain firmware updates decrease battery life a little.
And third.
You can disable apps that are draining Your battery if You don't need them.
Also for a really good battery info what uses Your battery etc You can download GSAM battery monitor from play store.

ProtoDeVNan0 said:
First out of all. How much SOT (Screen On Time) do You get?
To check that go to battery usage at the end of the day or when You have 20% and in battery usage tap on screen and take a screenshot.
Second.
Certain firmware updates decrease battery life a little.
And third.
You can disable apps that are draining Your battery if You don't need them.
Also for a really good battery info what uses Your battery etc You can download GSAM battery monitor from play store.
Click to expand...
Click to collapse
well from the time being, i think my network operator is draining my battery.I tried to turn off my mobile network last night and used wifi instead.I lost 1% for 8 hours.Well, I changed my network operator around october and since then I felt the battery drain. I already sent report to the provider hope they solve it.
But I wonder, my network operator has good 4g coverage here, why does it drain too much? My old operator had only 3g coverage.Is there any way for me to track down my operator whether they are using too much battery to search network coverage maybe?

Newest firmware always decrease battery life a little

Is this battery consumption normal?

Hi all,
I just come with this Screenshots to know your opinion on the consumption of my s5. Honestly Im jealous of those people getting 4,5hours of SOT in a full charge. I believe I can barely achieve 2h. My phone is rooted, de bloated with smart debloater and uses Greenify (which has not provided me a noticeable gain).
I've seen a very big drain just after plugging off the phone (like 5 or 6%) in two hours without using it. Also everything I unlock the phone the drain is very fast. So idle state seems no to be the cause
What are your thoughts? Thanks in advance.
By the way, while writing this post I've lost 5% of charge.

paco_ramirez said:
Hi all,
I just come with this Screenshots to know your opinion on the consumption of my s5. Honestly Im jealous of those people getting 4,5hours of SOT in a full charge. I believe I can barely achieve 2h. My phone is rooted, de bloated with smart debloater and uses Greenify (which has not provided me a noticeable gain).
I've seen a very big drain just after plugging off the phone (like 5 or 6%) in two hours without using it. Also everything I unlock the phone the drain is very fast. So idle state seems no to be the cause
What are your thoughts? Thanks in advance.
By the way, while writing this post I've lost 5% of charge.
Click to expand...
Click to collapse
Need a new battery I think and with the battery you gotta keep it cool, don't charge you phone and use it when its under 20 ℅. And the hotter the battery gets the faster it will discharge and if your charging at the same time the CPU will work harder to charge the battery and do whatever you want to do with your phone making it a double whammy wearing out your battery much faster than normal. You not supposed to let our batteries to go below 20 %. Well you can but don't use it at the same time your charging.

Zer0b1ade said:
Need a new battery I think and with the battery you gotta keep it cool, don't charge you phone and use it when its under 20 ℅. And the hotter the battery gets the faster it will discharge and if your charging at the same time the CPU will work harder to charge the battery and do whatever you want to do with your phone making it a double whammy wearing out your battery much faster than normal. You not supposed to let our batteries to go below 20 %. Well you can but don't use it at the same time your charging.
Click to expand...
Click to collapse
Thank you very much for your information. Any suggestion about a new battery? I've seen this one.
I've just plugged off from 100% and I got a battery drain of 5% just by speaking 15 minutes (no hand-free). I think it's a very big battery drain for just a small talk. I think that confirm your hypothesis of the wasted battery.
Is there any way to know the real capacity of the battery I currently have? It is just to know how far it is from its original performance.

I've checked on Go Power Master app and it claims 2520 (at 90%) mah in my battery. Is this confident? If so, I shouldn't expect a big improvement buying a new battery. What about using other roms or making a factory reset?.

paco_ramirez said:
I've checked on Go Power Master app and it claims 2520 (at 90%) mah in my battery. Is this confident? If so, I shouldn't expect a big improvement buying a new battery. What about using other roms or making a factory reset?.
Click to expand...
Click to collapse
How old is your battery? Mah rating and the rate it discharges are different you can discharge 2600 mah batter in an hour or 3 days depending on use and environment and conditions. Like I said before the hotter your battery gets the faster the disharge go same with the cpu the hotter it gets the more power it demands from the battery. And if your battery get under 20% fast charging comes. Into play as well which is bad for the battery as well.
If your dropping off that fast I think is a defective battery or over clocked cpu settings. My s5 did he same till I bought a new battery I last 8-12 hours of heavy use now compared to 4 hours. With a new battery I suggest a higher capacity but same dimensions as the old one they can be expensive but a bigger battery will damage your phone over time.
I have a 5600mah battery now by 5he way.
---------- Post added at 02:46 PM ---------- Previous post was at 02:42 PM ----------
Oh my power app tells me I have 2520 too but I really dont....heh
---------- Post added at 03:12 PM ---------- Previous post was at 02:46 PM ----------
Oh that battery looks OK I can't read the language lol just make sure its not refurbished or used and check out if u can refund it or not lol

My battery is from October 2015. It's the original one that came with the phone

Here is last report:
Despite performance is not the worst, do you think the difference with a new one is very big?

Back in my S3 Mini days I had to change the battery and the difference was huge for it. A year ago I replaced my S5's battery for the first time (I own my black beauty since february 2015) and I remember that I saw an improvement in battery life and in performance a bit as well.
A trick: take out your battery and put it on a flat surface (table or whatever) and try to spin it. If it spins freely, buy new one for sure.
I'd advise you to also update from KitKat to Marshmallow as that made my phone brand new but I see you're on 6.0.1 already so nevermind
I myself lose the first ~10% of my charge in one hour or even less...while not doing literally anything with my screen off. So yeah, maybe it's gonna be time for another replacement in a few months
By the way I tried Greenify today. The drain was far worse than when I didn't have it installed lol. Android Marshmallow is finally that one guy who's capable of handling himself alone without helpers like Greenify so try without it, it eats up your CPU anyway (as minimal as it can be, it still does).
With 3G always enabled I can get between 3 and 4 hours of screen on time (no games ofcourse) and around, idk, 10 hours total time until it hits below 10% and asks for some juice.
This^ was simply impossible with android 4.4.2 on the same phone so 6.0.1 really impressed me a lot as I had awful memories of Lollipop (that's why I didn't update for so long actually).
To sum up: try all the software ways of extending your battery life - with/without Greenify, uninstall/disable/optimise certain apps like Facebook and Spotify (says they slow down my phone), change ROMs, change kernels, change settings and if nothing works get a new battery.
PS: When Samsung go back on track and put a removable battery + all old features in a new flagship, I'm switching to that (S9, S10, SX, whatever xd). Newer phones got water cooling (~30 degrees while gaming, S5 gets 36-40C).

Thank you very much for your long answer. Honestly I don't trust too much battery savers. I've tried in the past many of them with no visible results. In fact greenify has never shown me any benefit. Notwithstanding, in this specific case, I've seen that hibernating "mi fit" (from xiaomi) I can appreciate a considerable improvement (5-10% of gain). I own a mi band and apart from keeping Bluetooth on (which seems not to be a big drainer) mi fit abuses of this connection. In fact "tools & mi band" seems to be more energy efficient with the connection to the mi band.
In any case I'll order a new one as it is not normal to have the drain for 100 to 90 being off and idle

I've changed old battery for a new one and I haven't seen any considerable improvement. After it, I've done a factory reset and a battery calibration (using the app on the store that requires root) and nothing... Any suggestion? I have the feeling that new battery is OK but somehow my phone is unable to take advantage of its performance...

koragg97 said:
Back in my S3 Mini days I had to change the battery and the difference was huge for it. A year ago I replaced my S5's battery for the first time (I own my black beauty since february 2015) and I remember that I saw an improvement in battery life and in performance a bit as well.
A trick: take out your battery and put it on a flat surface (table or whatever) and try to spin it. If it spins freely, buy new one for sure.
I'd advise you to also update from KitKat to Marshmallow as that made my phone brand new but I see you're on 6.0.1 already so nevermind :..
Click to expand...
Click to collapse
Ive just unplugged it 50 minutes ago and I have 10 percent left with only 10 minutes screen off... There is something wrong and I don't think the two batteries (old and new) are in bad state in the same way... There may be something else..

Have you tried to install the stock firmware through odin? PS: Read the instruction before trying it!!!

paco_ramirez said:
Ive just unplugged it 50 minutes ago and I have 10 percent left with only 10 minutes screen off... There is something wrong and I don't think the two batteries (old and new) are in bad state in the same way... There may be something else..
Click to expand...
Click to collapse
Make nandroid backup with TWRP and flash official firmware. That's just not normal for any kind of battery (good or bad)

tm60405 said:
Have you tried to install the stock firmware through odin? PS: Read the instruction before trying it!!!
Click to expand...
Click to collapse
koragg97 said:
Make nandroid backup with TWRP and flash official firmware. That's just not normal for any kind of battery (good or bad)
Click to expand...
Click to collapse
Right now I have DreamUX V2 A7 (2017). I flashed one week ago hoping to remove this strange battery behavior. But it remains. Do you think reflashing stock firmware will fix it? I'll check instructions before going ahead. Thanks to both!

paco_ramirez said:
Right now I have DreamUX V2 A7 (2017). I flashed one week ago hoping to remove this strange battery behavior. But it remains. Do you think reflashing stock firmware will fix it? I'll check instructions before going ahead. Thanks to both!
Click to expand...
Click to collapse
If it gets fixed after firmware reinstall then it's a software bug. If it gets fixed after changing the battery then it's a hardware bug. If it doesn't get fixed after trying both things then it's black magic :s
Also try to clear dalvik-cache and cache and do factory reset before and after flashing.

koragg97 said:
If it gets fixed after firmware reinstall then it's a software bug. If it gets fixed after changing the battery then it's a hardware bug. If it doesn't get fixed after trying both things then it's black magic :s
Also try to clear dalvik-cache and cache and do factory reset before and after flashing.
Click to expand...
Click to collapse
OK I'll go ahead with this. Good guide to reflash stock rom?
I'll do several factory resets to see if it helps, but I start to think that it's black magic
Thanks

Sorry for the delay in replaying but I've made several attempts with not specially good results.
Now I'm getting 24 hours battery with 2h SOC for WhatsApp and browsing. Furthermore, I use Bluetooth for the miband.
The battery drop from 100 to 90 still remains. Maybe it's smoother but significant.
I've changed battery, changed roms (several times wiping everything). I've tried battery calibration app from rooted devices. I've tried the calibration procedure for non root devices (here I think I've obtained a little bit of improvement) but in general I have the feeling my phone is not detecting well the capacity of the battery (either new or old). Any tip? Advice?. Could it be the charging circuit? Can it be fixed? Should I keep doing calibrations more often to see if I grasp more capacity little by little?
Thanks for your time and help