Develop Bugs

Correct way to cycle the EVO battery?

Hi can anyone tell me the correct way I should go about charging the EVO when I first get it? I'm getting it tomorrow and want to break the battery in the right way (if there is a right way), let me know!

I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?

I definatly will say that the first few charges of the battery do NOT last long at all, battery drains REALLY fast.
This may be placebo, as I know that Android will get more efficient as the OS "settles down"
I always make sure to let it run until the device shuts off by itself before charging. Then charge to full and repeat. I try to do this 5 times, but it helps that I have a hero I can drain with, then charge and always have a full battery in my Evo.

ephestione said:
I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?
Click to expand...
Click to collapse
so completely drain it then charge, drain, charge, etc?

lithium ion batteries do not need conditioned ... and actually prefer to be charged frequently (or so I have read). Just do a google search for lithium ion conditioning and almost every reference says that only the older technologies need it.

It's actually the phone that needs to learn the batteries fully charged to fully drained levels. A couple of full charge-drain cycles teaches the battery meter in the phone. Same deal for notebook computer batteries.

ephestione said:
I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?
Click to expand...
Click to collapse
it was a way to get you guys to drool!

chazglenn3 said:
It's actually the phone that needs to learn the batteries fully charged to fully drained levels. A couple of full charge-drain cycles teaches the battery meter in the phone. Same deal for notebook computer batteries.
Click to expand...
Click to collapse
* Not sure if this applies to the battery in the EVO as I have never taken one apart yet ***
From what I recall most notebook (if not all) Lithium * batteries have an integrated charging / safety chip on the battery http://www.sbs-forum.org/ that maintains information about the battery level (via SMbus) and charge information. It is this chip that will report the current battery level and will disallow you to charge a battery at a certain point due to safety concerns.
What is common though is that it takes a couple of cycles for the onboard / outboard battery chip to learn the charge level which the host OS will just blindly read for the most part.

condition your battery
When you have a new cell phone battery there is a residual charge left from manufacturing..it may even say it is fully charged but it is a false reading. You need to charge the battery before you start using it for 8-12 hours. Then, use it down to about 25% and charge for another 8-12 hours. Repeat this process for the first 3-5 charges and then your battery will be conditioned.
After the initial conditioning your battery will last the longest if you do not let it run out until it dies. It is best to charge when at 25%-30% capacity.
Good luck!

kphenix said:
When you have a new cell phone battery there is a residual charge left from manufacturing..it may even say it is fully charged but it is a false reading. You need to charge the battery before you start using it for 8-12 hours. Then, use it down to about 25% and charge for another 8-12 hours. Repeat this process for the first 3-5 charges and then your battery will be conditioned.
After the initial conditioning your battery will last the longest if you do not let it run out until it dies. It is best to charge when at 25%-30% capacity.
Good luck!
Click to expand...
Click to collapse
Wow. First off, thanks for resurrecting a thread that's over a year old.
Second, your post is completely wrong. Lithium ion batteries do not need to be conditioned at all. Just plug it in, let it charge, and you are good to go.

They do need conditioning
Sent from my PC36100 using XDA Premium App

bootny said:
They do need conditioning
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
Says who? Lithium ion batteries do not need any conditioning.

Really cuz It took a month for my battery to get 36+ he's because I didn't charge it right ( i use sbc) when I got and with my 3d I get 24+ hrs due to battery conditioning. Say what you will my girl does the same with her iPhone and get 2 1/2 days out of it while another friend of mine didn't and her battery is dead after twelve hours... no dis respect dog but it works contrary to beliefs
Sent from my PC36100 using XDA Premium App

bootny said:
Really cuz It took a month for my battery to get 36+ he's because I didn't charge it right ( i use sbc) when I got and with my 3d I get 24+ hrs due to battery conditioning. Say what you will my girl does the same with her iPhone and get 2 1/2 days out of it while another friend of mine didn't and her battery is dead after twelve hours... no dis respect dog but it works contrary to beliefs
Conditioning works for unknown r
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
Conditioning works for unknown reasons. Not for the reasons, most people say. And its true lithium ion don't have memory any more so its not nearly as effective to condition. Also where are you getting those results? Those are f***ing insane
Sent from my PC36100 using XDA App

lilman355 said:
Conditioning works for unknown reasons. Not for the reasons, most people say. And its true lithium ion don't have memory any more so its not nearly as effective to condition. Also where are you getting those results? Those are f***ing insane
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Results for the Evo? I use a 2600 mah sprint battery and when I use an eBay battery 3500 mah I get 14hrs max ( weird but it was only $15 for 2)... gonna try seidio next and see how they work... and w the 3d I ( also the 4g) I charge til green then unplug and plug til green ten times as suggested by xda thread that was on miui website only
Sent from my PC36100 using XDA Premium App

Use the search please..calibration methods are tried and true..nothing more to see here..let this thread die as the other poster indicated.
Search for battery calibration. I would copy and past the url's for you but I literally found 10+ threads about calibration methods for the EVO within seconds so it will be super easy for you to read one of the methods and apply for what we now see as perfect results.
As far as I know now, nobody complains about EVO battery life anymore unless they are using something to drain the power, bad coded app, kernel or poorly coded ROM etc. It happens sometimes but usually enough information out there to support fixing the issues once you see them.
Hope that helps and good luck..

waterbound said:
Use the search please..calibration methods are tried and true..nothing more to see here..let this thread die as the other poster indicated.
Search for battery calibration. I would copy and past the url's for you but I literally found 10+ threads about calibration methods for the EVO within seconds so it will be super easy for you to read one of the methods and apply for what we now see as perfect results.
As far as I know now, nobody complains about EVO battery life anymore unless they are using something to drain the power, bad coded app, kernel or poorly coded ROM etc. It happens sometimes but usually enough information out there to support fixing the issues once you see them.
Hope that helps and good luck..
Click to expand...
Click to collapse
Thank you!
Sent from my PC36100 using XDA Premium App

Need battery advice!! -g2

Can someone please give me some advice on what to do with my battery! Only been on for about 7 hours and I'm already at 34%!! Well 33 as of now.. This is NOT normal! Only talked for about an hour total today! I always have wifi on because I don't have a data plan! -Medium usage.
-pics enclosed!
-system info/rom/kernel info!
-please help!! Thanks!
Sent from my HTC Vision using XDA Premium App

Some advice I can shed on this is having Wifi on all the time, (by all the time you mean at least 24/7), that could be a strong point why your battery life is low. Another thing is the number of apps that require data being pulled running in the background
1. Having Wifi on for the time you state is bad if you don't have a signal. Reason why is that since there is no signal for your Wifi to obtain it will continue to search and fail, search and fail which actually drains some good amount of battery being forced to repeat such a task unlike when having a steady signal it's usage becomes minimal
2. High number of data pulling apps also works the same except then have the option to change the time they pull data which can be usually found under settings/options tab
Try these out and let us know how it goes =]

xArcane1x said:
Some advice I can shed on this is having Wifi on all the time, (by all the time you mean at least 24/7), that could be a strong point why your battery life is low. Another thing is the number of apps that require data being pulled running in the background
1. Having Wifi on for the time you state is bad if you don't have a signal. Reason why is that since there is no signal for your Wifi to obtain it will continue to search and fail, search and fail which actually drains some good amount of battery being forced to repeat such a task unlike when having a steady signal it's usage becomes minimal
2. High number of data pulling apps also works the same except then have the option to change the time they pull data which can be usually found under settings/options tab
Try these out and let us know how it goes =]
Click to expand...
Click to collapse
Thanks for the info

When I have wifi on, I am always somewhere where I have wifi. I do leave it on while driving, but that's no more that a few minutes until it reconnects.
Sent from my HTC Vision using XDA Premium App

Hmmmmm
I barely noticed that you are running a custom rom. After flashing the new rom did you wipe battery stats? If not, that can actually affect battery life as all roms run differently and different data is applied to the battery stat
There are two ways to go about wiping the stats. You can boot into recovery and Wipe Dalvik Cache under the advanced settings or you can download Battery Calibration from the marketplace which in my experience is a lot easier
Battery Calibration
The instructions are inside the app on how to implement the process

I had this rom for a while but when I flashed it, I did not wipe data or anything. I decided to wipe data to give it a try and reflashed it. I charged it completely and calibrated it. I am in the process of running the battery until it dies so I can recharge it to complete the calibration process.
Sent from my HTC Vision using XDA Premium App

Be sure to post back your results and hopefully if nothing has improved I'll try again to assist you =]

Ran it last night untill it was dead and let it charge throughout the night. Testing battery life now! Will post results when at 8 hours. Would post at 7 again but I am gooing on a college visit today and won't be using it then.
Sent from my HTC Vision using XDA Premium App

DroidCell said:
Ran it last night untill it was dead and let it charge throughout the night. Testing battery life now! Will post results when at 8 hours. Would post at 7 again but I am gooing on a college visit today and won't be using it then.
Click to expand...
Click to collapse
DO NOT drain the battery until it dies!!! Just down to 15-20%, then charge to full, repeat a couple times. Over-discharge is not good for Li ion batteries.
People on here keep recommending it, or saying they do it. Its NOT a good idea, and proliferating this bad advice needs to stop. Draining the battery to dead is bad for the life of the battery. Also over-discharge can possibly render the battery unable to take a charge, requiring you to buy a new battery. It doesn't happen often, but its happened to a few different people on this phone, and other phones as well.

redpoint73 said:
DO NOT drain the battery until it dies!!! Just down to 15-20%, then charge to full, repeat a couple times. Over-discharge is not good for Li ion batteries.
People on here keep recommending it, or saying they do it. Its NOT a good idea, and proliferating this bad advice needs to stop. Draining the battery to dead is bad for the life of the battery. Also over-discharge can possibly render the battery unable to take a charge, requiring you to buy a new battery. It doesn't happen often, but its happened to a few different people on this phone, and other phones as well.
Click to expand...
Click to collapse
You seem to know a lot so i'm gonna ask ya redpoint. People say there is a built in safety zone so even when the battery is reporting as 0 it really isn't. The batteries do not allow themselves to get below a certain threshold for the reason you are explaining. Is this not true? Lots of people who know nothing of xda or cell phones in general let there phone run the whole way out for whatever reason. I would think that cell/battery manufacturers would take that into consideration.

the reason people used to tell you to drain the battery complete was based on an older battery tech that has what you would call a "memory" it needs to "memorize" it's lowest and highest point in order to calibrate the battery. Li-ions do not need that. They actually keep track of your charge cycles.
suppose it can handle 1000 cycles. on the first day, you used up 75% of your battery and put it on the charger to max. then the next day you use another 75% and do the same thing. at this point what actually happens is that the battery will count this as 1.5 cycles rather than 2 cycles. But redpoint is right.
Do NOT drain the battery completely when it's a Li-ion battery. it's old advice for old tech battery that is legit for that type of battery but not Li-ion batteries.
To calibrate your battery, you just use your phone normally. It will figure out where it is supposed to be as you use and charge it over the course of a few days.

better battery life
Notice on the graph, the screen was not on for a while though...
Sent from my HTC Vision using XDA Premium App

xsteven77x said:
You seem to know a lot so i'm gonna ask ya redpoint. People say there is a built in safety zone so even when the battery is reporting as 0 it really isn't. The batteries do not allow themselves to get below a certain threshold for the reason you are explaining. Is this not true? Lots of people who know nothing of xda or cell phones in general let there phone run the whole way out for whatever reason. I would think that cell/battery manufacturers would take that into consideration.
Click to expand...
Click to collapse
It is true that there is a built in 'safety zone' so that the battery does not drain completely to zero.
However, it is also true that this 'safety zone' can and HAS failed for some users (including some who are on these forums)
With the way that Li-Ion batteries work, and 'calibrate', there is no added benefit to draining it completely to zero. If there is no benefit, then the risk is not worth it.

DroidCell said:
Can someone please give me some advice on what to do with my battery! Only been on for about 7 hours and I'm already at 34%!! Well 33 as of now.. This is NOT normal! Only talked for about an hour total today! I always have wifi on because I don't have a data plan! -Medium usage.
-pics enclosed!
-system info/rom/kernel info!
-please help!! Thanks!
Sent from my HTC Vision using XDA Premium App
Click to expand...
Click to collapse
These ideas ran through my mind reading your post:
I. You might want to calibrate your battery. I've run into many instruction how to do this (just google the keywords: Desire Z calibrate battery), but basically the ones that do NOT require you to drain your battery to zero first, came down to this:
0. Turn Fastboot OFF!
1. Power on your Desire then connect to your Charger and Fully charge until the LED changes Green.
2. Disconnect your phone from the charger and then power off.
3. Reconnect your phone to your charger with the power off and wait for the green LED.
4. Disconnect the phone from the charger and power it on.
5. Once the phone has fully booted / ready to use ... power off again.
6. With the power off connect the phone to the charger and wait for the green LED.
7. Disconnect from the Charger then power on and use normally.
Many people seem to have greatly increased their battery life just by following those simple steps. I am currently in the process of trying it myself, but will probably need some hours before I can verify if the overall life has significantly increased.
II. You might want to install an App like "Watchdog lite" for a longterm check if you have any apps or processes, that work as a battery eater in the background.
III. if the above tips should fail, you might want to upgrade your radio and maybe also align the radio library (RIL), to match it best with your radio and ROM. But do a lot of reading and research before actually performing that task, since this is nothing for beginners and might even make things worse. This thread might be a good point to start your research.
hope that helps,
Tronar

How to prime the GN's battery?

I'm off to get my Galaxy Nexus tomorrow, but after hearing some of the poor battery reviews, I want to make sure I get off to a good start.
I heard something about there being a significant difference in how Samsung batteries perform if they are first "primed". How exactly do you prime a Samsung/Galaxy Nexus battery to ensure it gets the maximum life out of it?
Any non-battery tips are also welcome, as I want to make sure to make the best use of my Galaxy Nexus (coming from a Nexus One).

I would let the battery die, then leave it on the charger for 6-8 hours during the first charge.

rashad1 said:
I would let the battery die, then leave it on the charger for 6-8 hours during the first charge.
Click to expand...
Click to collapse
I'd do what he said but charge it to full first... and drain it to dead from full twice.
Sent from my Galaxy Nexus using Tapatalk

just received my phone, put in my sim and battery and hooked it up to the charger without turning it on.
will take it off the charger when the battery is full and start using it (it is already charging for about an hour now and still not full)

Great, thanks to all three of you. I'm hoping for better than my Nexus One, but I can't really imagine it being worse than my old HTC Touch Pro. (4 hours on standby, hell yeah!)

Btw. It's not advisable to let the batteries run dead completely, this can lead to damage, poor performance and reduced charging capabilities.
I'm not an expert, but if you google mobile phone battery best practices something should pop up.
Sent from my Galaxy Nexus using xda premium

philipdeane said:
Btw. It's not advisable to let the batteries run dead completely, this can lead to damage, poor performance and reduced charging capabilities.
I'm not an expert, but if you google mobile phone battery best practices something should pop up.
Click to expand...
Click to collapse
If I'm correct though, the phone turns off before it hits 0% so that the battery is not damaged. But I'm no expert either.
I'll stock up on some battery articles and see what I can find, thanks again.

Do what it says in the manual?

psykick5 said:
Do what it says in the manual?
Click to expand...
Click to collapse
got a manual handy?
Sent from my Galaxy Nexus using xda premium

everything you need to know about lithium-ion batteries
everything you need to know about lithium-ion batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Good guide; it's nice to see some numbers actually attached to that.
The manual, however, just says to "charge the phone to full capacity" first, but nothing afterward.
Irrespective, the phone is now charging and I'm ready for some Ice Cream Sandwich goodness. Thanks guys! ^^

You can also get one of the battery apps from the android market. I got Battery Doctor and like it. It provides more precise control, and has a charge tab which lets you see exactly how much charge is there and lets you know when fully charged.
I get about 16 hours with moderate use (forums, phone calls, updating calender, etc). I get about 20+ hours when I am only checking facebook and forums.
Regards,

I havn't calibrated once and I received my phone a week ago.
It was also a display model, I think, as the box looked pretty warn out and there was no set up screen upon first getting it.
Will this present an issue or can I calibrate now and have the same benefits I would get if I calibrated a brand new one?

[Q] How To Change Battery #GNote2?

Maybe this question has been asked for many user.. but I need more clearly solution. My Question is simple.
Which one the best method to change our #GNote2 battery?
a. Charge it whatever have a time to change
b. Change it when our #GNote2 said that we need to charge our battery
c. Always Change until it FULLY CHANGED... and never remove charger cable before battery full.
Or any the best method?
Thanks

jauhari said:
Maybe this question has been asked for many user.. but I need more clearly solution. My Question is simple.
Which one the best method to change our #GNote2 battery?
a. Charge it whatever have a time to change
b. Change it when our #GNote2 said that we need to charge our battery
c. Always Change until it FULLY CHANGED... and never remove charger cable before battery full.
Or any the best method?
Thanks
Click to expand...
Click to collapse
lol u can change the battery any time u like,and always remove the charge cable from ur phone,simple

turborider said:
lol u can change the battery any time u like,and always remove the charge cable from ur phone,simple
Click to expand...
Click to collapse
Remove the cable without waiting the battery full? Is it okay?

Why wouldn't it be?

jauhari said:
Remove the cable without waiting the battery full? Is it okay?
Click to expand...
Click to collapse
No more battery memory right now .
Of coz you can use your phone battery to under 20% then charge it back to 100%
But it's not easy @ note2.
Everyday I have around 30-40% battery leave when I charging.

goddamnit said:
No more battery memory right now .
Of coz you can use your phone battery to under 20% then charge it back to 100%
But it's not easy @ note2.
Everyday I have around 30-40% battery leave when I charging.
Click to expand...
Click to collapse
Can you explain more about what you said
But it's not easy @ note2
Regards

jauhari said:
Can you explain more about what you said
But it's not easy @ note2
Regards
Click to expand...
Click to collapse
Bwuh? Not easy? It's as easy as plugging or unplugging it! Sheesh...
You cannot damage your battery by not charging it to full each cycle. At all. Period.

jauhari said:
Can you explain more about what you said
But it's not easy @ note2
Regards
Click to expand...
Click to collapse
If you use your note2 as normal user.
Internet browser for 3-4 hours
Video for 1-2 hours
What's app ,email ,or something
You can never see the battery warning after one day usage.
-> I suppose you cannot hand on your phone all day time

Thanks you for all of your answer.. now my Battery knowledge has been increased..

FloatingFatMan said:
Bwuh? Not easy? It's as easy as plugging or unplugging it! Sheesh...
You cannot damage your battery by not charging it to full each cycle. At all. Period.
Click to expand...
Click to collapse
In his defense, I have had several phones where the charging port eventually got flaky and I also kind of worry about this slightly. This includes the note 1.
Sent from my GT-N7100 using XDA Premium HD app

ChodTheWacko said:
In his defense, I have had several phones where the charging port eventually got flaky and I also kind of worry about this slightly. This includes the note 1.
Sent from my GT-N7100 using XDA Premium HD app
Click to expand...
Click to collapse
That has nothing to do with the battery and everything to do with being careless when plugging or unplugging.

OP, you may want to google or wiki the latest battery technology. Those 'tips' (b) and (c) you mentioned were good for NiMH batteries. Nowadays, we use Li ion or Li polymer batteries which do not need to be fully charged and discharged to maintain longevity.
Sent from my GT-N7100

Two things are important for prolonging your battery (lithium based) life: charging level and depth of discharge. avoid charging to 100% as much as you can, and also avoid wide discharging range.
A good strategy is to charge what you use, that is, if you use only 50% of the capacity every day, then only charge to 80% and use it down to 30%, then recharge.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Ive never heard 'avoid charging to 100%' .
I dont understand how that could be harmful.

rockky said:
Ive never heard 'avoid charging to 100%' .
I dont understand how that could be harmful.
Click to expand...
Click to collapse
It isn't. It's just more FUD about batteries... *sigh*
Listen people. It's -really- very simple. There are no tricks involved. Just drain your battery how you like and charge it how you like. These phones are designed for average people in mind. People who don't have a CLUE about having special discharge/recharge routines. They're designed to be charged whenever the user wants to charge, to 100% or not, as the user likes. The hardware within the charging circuit and battery itself will protect it from harm.

[Q] Battery calibration anyone succeded?

Battery calibration anyone succeded?
Hi I have a battery calibration problem on my GT-N5110 Note 8.0 that I bought refurbished through amazon. I know it is the calibration since the battery usually drains pretty fast and when it gets to 1% it stays there for around half to one hour of continuous use. Also sometimes when I'm charging it, it jumps from around 60% to 100% and "charged" shows up right after that happens, when I unplug it and use it, then it goes down normally (fast) 1% at a time, even though that big jump while charging happened.
I have tried several "full cycles" without success and haven't been able to find a real way to calibrate the battery meter, neither here or on google, and since I didn't buy it in my country, local samsung support say they can not help me.
I'm on 4.2.2 leak rooted and the drain has been present since I was on 4.1.2 stock.
If someone can get a hold of how to calibrate, it would be really nice if you could share it! Thank you!
Sent from my GT-N5110 using Tapatalk 4

Can someone Help us in this Thread? Pls.. I have the same issue. Dunno if its cos the SD maid I installed deleted my batterystats.bin.. Pls help

http://forum.xda-developers.com/showthread.php?t=2469389
Sent from my GT-N5100 using xda app-developers app

superng888 said:
http://forum.xda-developers.com/showthread.php?t=2469389
Sent from my GT-N5100 using xda app-developers app
Click to expand...
Click to collapse
I tried the battery calibration app before, and really didn't do a thing for me...

I also suffer this weird battery behaviour with the device charging, it will take ages up to about 60%, and then instantly its at 100%
I also get this on the way down... when im using it, the battery drains fast, but when I get to 35 -40%, I then suddenly get the low battery 15% warning flash up, and then im all out of juice.
This is the same whether im on 4.1.2 or 4.2.2 custom or stock firmware
I rarely get more than an hour screen on time, and thats with fairly low brightness and power saving mode on

If someone could some how contact Samsung and ask them about the real calibration it would be very helpful for us having this issue... Since some don't live in the US and don't get the correct support :what:
Sent from my GT-N5110 using Tapatalk 4

I don't have the same issue,so I couldn't help. Sorry.

I need help with this too!
Battery decreases so quickly when wifi is on! hardly get a days use out of it...:crying:

One method described in the battery performance thread which I've found effective:
"I wanna share my trial of battery calibration that really make a significant different at least till now .. I used to make calibration by discharge / charge cycles, but this time i add an official instruction of Apple:
- discharge the battery by ur normal usage till 1% then let the device play an HD movie till it shut down (that may take some time as it for me takes 4 hours!!) then turn it on to make sure the battery read 0% (my previous calibration the battery always shut down at 1% and I never see that 0% as I was discharging it vigorously) after making sure it is 0% it will turn off by itself anyway.
- now leave ur device turned off for extended time (about 5 hours or more is better according to apple "u could let it while u r sleeping"
- after that turn the device on and plug it in as it is on
- left it charges as it likes (for my trial it takes 7 hours and didn't say charged!! but I had to unplug it as I had to leave the work!)
till now my battery is really significantly improved, hoping to continue like that and I will keep u updated
Hope that helps :good:"
Discharging it completely, leaving it dead overnight then giving it a full charge by plugging in as a soon as it powers on has yielded good results for me. However I've also discovered a severe battery drain bug in stock Kitkat which has nothing to do with battery calibration; using wifi on certain routers causes Android OS wakelock which persists in deep sleep. I use my old Galaxy W as a hotspot for my Note 8 and consistently my battery drains overnight in deep sleep with wifi on. At my workplace we have a Linksys E2500 router, I leave the tablet on wifi throughout the day and don't notice the Android OS wakelock. So if you're having inexplicable battery drain test your Note 8 on different routers.
Sent from my GT-N5100 using XDA Free mobile app

Calibration is a myth... google stated calibration tools do not help with how Android functions with battery management.
I posted my thread about battery and charging cables, and replied an a few topics like this one, yet nobody will search on Samsung DVFS disable or take note of it as being the cause.
Root with saferoot if you have not rooted, install xposed framework if not done so, and Wanam Xposed or Wanam DVFS disable. Since over 10 months now, my battery stats and performance are trouble free.

I was having severe battery drain for a while until I tried something I read about. What you do is carefully open the note up and disconnect the battery for about 15 minutes (they recommend a longer time but I don't see the need). Connect it back up and put the note back together.
It worked for me.
Google it, there's even a video on how to do it.

I was down to 3 hours or so of battery time but bought a replacement battery from a company called New Power 99. Cost $65-ish US and now I can go all day and still have at least 25% when I hit the sack at night. Huge improvement for me! I"m not a heavy user but I take notes at work, do some surfing, then read and surf alot at home at night. So far it's been great! Might think of a replacement battery. Probably cheaper one's out there but I wanted to get what I paid for so shelled out the extra.

rogerperk said:
I was down to 3 hours or so of battery time but bought a replacement battery from a company called New Power 99. Cost $65-ish US and now I can go all day and still have at least 25% when I hit the sack at night. Huge improvement for me! I"m not a heavy user but I take notes at work, do some surfing, then read and surf alot at home at night. So far it's been great! Might think of a replacement battery. Probably cheaper one's out there but I wanted to get what I paid for so shelled out the extra.
Click to expand...
Click to collapse
Hi! Thanks for the info! That's great to hear, one question, did you change the battery yourself? If so, could you provide a hint on which guide you used, that would be verry helpful:good:

The battery came with a DVD that explained it (with really bad music) but the bottom line is you pry the back off, take the 8 screws off, unplug the old - plug in the new and replace everything. Not really hard but, as I said, nerve-wracking! I was afraid I'd screw it up but it was pretty straight forward.

rogerperk said:
The battery came with a DVD that explained it (with really bad music) but the bottom line is you pry the back off, take the 8 screws off, unplug the old - plug in the new and replace everything. Not really hard but, as I said, nerve-wracking! I was afraid I'd screw it up but it was pretty straight forward.
Click to expand...
Click to collapse
That's awesome I would like to buy the same one in case something goes weird and need instructions to follow. Do you remember anything about the seller/model/site you got?

Yeah, just go to Amazon and search for "new power 99 battery replacement kit". Then pick Note 8 from the list. eBay has them too.
---------- Post added at 08:40 AM ---------- Previous post was at 08:37 AM ----------
Actually, here is the URL http://www.amazon.com/dp/B00HXZ8KRA/ref=pe_385040_127541850_TE_item

rogerperk said:
Yeah, just go to Amazon and search for "new power 99 battery replacement kit". Then pick Note 8 from the list. eBay has them too.
---------- Post added at 08:40 AM ---------- Previous post was at 08:37 AM ----------
Actually, here is the URL http://www.amazon.com/dp/B00HXZ8KRA/ref=pe_385040_127541850_TE_item
Click to expand...
Click to collapse
Will do! Thank you very much! [emoji4] [emoji106]

Any time. Hope this works for you. It did for me.

I. Had the same issues, I just took off the back cover and disconnected the cable that connected the battery. I did not need a new battery. The toughest part for me was disconnecting the battery cable... I actually had to take out the 8 screws that held the battery in place, so I could get some leverage. I only had my battery disconnected for only 5 minutes and it solved the problem for me..... Good luck!
Sent from the Heavens and my Note 8-5110