AndroidTutor2018- Battery problems are among the biggest concerns for smartphone users, which is why we offer so many useful tips for solving battery drain issues. If you notice that your battery performance and duration has decreased, it could be time to calibrate your battery.
How to fix a phone that won't charge properly
How to charge your Android phone battery faster
Jump to section:
Is my battery the problem?
Should I calibrate my phone's battery?
What is battery calibration?
Smartphone battery myths
How to calibrate an Android device battery without root access
How to calibrate an Android device battery with root access
How do I know whether my battery is the problem?
First of all, you need to identify why your battery performance has decreased: is it the Android system's calibration or the battery itself? We'll move onto calibration in the sections below, but you should check if your battery itself is damaged first.
If your phone has a removable battery cover, turn off your phone, remove the cover and inspect the battery. Look for bulges or leaks. In the image below, you'll see what a normal battery looks like next to a swollen one. If your phone doesn't sit flat on the table anymore, that could also be a sign of a swollen battery too.
A swollen battery is easy to spot. / © ANDROIDPIT
Should I calibrate the battery?
If you're satisfied that the battery itself is not the problem, you can move on to the steps below. If you think your battery might be the problem (even after trying to recalibrate it), we'd advise you to take it to a repair shop for an expert's opinion. If it turns out you need to replace the battery, go with an original or reliable third-party battery. Scrimping on a cheap knock-off battery only leads to more headaches in the long run.
Opinion by Kris CarlonBattery problems are very annoying
What do you think?
50503765 participants
Keep in mind that there are plenty of other things that can cause a battery to malfunction. If your phone doesn't charge, there might be a problem with the port, so check our guide on what to do when a phone won't charge.
If you've just updated the firmware on your phone, battery drain is a common complaint, so you might want to clear the cache partition on your device. Thankfully, we have plenty of guides on how to clear the cache on various devices.
It's a good idea to be familiar with what's normal for your battery. / © ANDROIDPIT
What is calibrating a battery?
The Android operating system has a feature called Battery Stats, which keeps track of battery capacity, when it is full or empty. The problem is that it sometimes becomes corrupted and starts displaying data that isn’t real, which, for example, causes the phone to turn off before it reaches 0 percent. Calibrating your Android battery simply means getting the Android OS to correct this information so it is reflective of your actual battery levels once again.
It's important to understand that you can't actually calibrate the battery itself: it is, after all, just a cell that stores power and discharges. However, lithium-ion batteries do include a printed circuit board (PCB), which serves as a protection switch to stop them exploding or deep discharging.
Although some batteries can explode, it is rare. / © ANDROIDPIT
Smartphone battery myths
Lithium-ion batteries don't have a memory so there's not much you need to do to keep them running as they should. The problem lies with how the Android system reads and displays the current capacity of the battery, not the battery itself.
The same goes for the myth that deleting the batterystats.bin file will magically recalibrate your battery. That file (on most devices anyway) simply stores data about what is using the battery when it is not being charged. It is also reset every time a battery is charged to over 80 percent and then disconnected from the charger.
The batterystats.bin file contains the info you see made prettier in the Battery section of your phone: it's the Android system keeping track of your battery's usage, per charge cycle. When we talk about battery calibration, it's the percentage meter that gets out of whack, and that is what we need to fix.
If your battery indicator is out of whack, you should try to recalibrate it. / © ANDROIDPIT
How to calibrate an Android device battery without root access
The old 'fully charge and discharge' approach stands as one of the simplest ways to 'recalibrate' your Android battery. We've warned you in the past about low voltage problems in lithium batteries and the negative impacts of fully draining a battery on its lifespan and the same holds true here. But, if your phone battery is causing you real problems, it's worth taking the risk.
Method 1
1. Discharge your phone fully until it turns itself off.
2. Turn it on again and let it turn itself off.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on-screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. Repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without it being plugged in.
8. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again.
9. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage.
Remember that it is not recommended to perform this process regularly. Even when your battery is so dead your phone won't even turn on, your battery still has enough reserve charge to avoid system damage. But you don't want to poke the tiger with a stick. Perform this process once every three months at the most. If it is required more often than that, you have bigger problems at hand.
Put plainly: fully discharging a battery is bad for it. Trying to overload a battery is also bad for it. The good news is that charging batteries will shut off automatically when they've reached their safe limit and there's always a little in reserve even if your phone won't start. Again: only do this when really necessary, because it does have a negative impact on battery life.
If your phone has root access you can clear the batterystats.bin file. / © AndroidPIT
How to calibrate an Android device battery with root access
Even though I'm not convinced that clearing the batterystats.bin file has any meaningful effect on how the Android system reports remaining battery charge, there are those who swear by this method.
So in the interest of fairness, we've included the process for you here (it is true that different manufacturers use the batterystats.bin file for different things). It's basically the same process as above, but with the added step of using a root-enabled app.
Method 2
1. Discharge your phone fully until it turns itself off.
2. Turn it on and let it turn off again.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on the screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. You want to repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without it being plugged in.
8. Now, install the Battery Calibration app, and before you launch it, make sure your battery is at 100 percent again, then restart.
Battery Calibration 9. Immediately launch the app and recalibrate your battery.
10. Once you've calibrated your battery, discharge it all the way down to 0 percent and let your phone turn off again.
11. Fully charge the battery one more time without interruption while it's switched off, and the Android system's battery percentage will be reset.
That's it. Have you tried any of these methods? Do you know an alternate way to fix battery problems? Let us know in the comments.
Where to buy Samsung Galaxy S7 Edge
Best price Samsung Galaxy S7 edge SM-G935 - 32GB - Gold Platinum T-Mobile, Metro, simple... $375.00
Shipping from $10.00
$385.00 total
Check Offer
Samsung Galaxy S7 edge SM-G935 - 32GB - Gold Platinum T-Mobile, Metro, simple... $375.00
Shipping from $10.00
$385.00 total
Check Offer
New Samsung Galaxy S7 edge G935T Silver T-Mobile Family Ultra Lyca Mobile Andrd $389.99
$389.99 total
Check Offer
New Samsung Galaxy S7 edge G935T Gold T-Mobile Family Ultra Lyca Mobile Andrd $399.99
$399.99 total
Check Offer
Samsung Galaxy S7 Edge ( AT&T ) - G935A - 32GB - Silver Titanium - CLEAN IMEI $399.99
$399.99 total
Check Offer
Compare prices
1,129 Shares
Share on Facebook Tweet on Twitter Share on Google+ 1,129 Shares
More from the web
Say Goodbye to Phone Bills Forever With One Super-Low Wireless Payment Per Year!MintSim
How I Found Motivation by Ditching Earbuds and Embracing DiscomfortZappos
Monterey Park, California: This Company You May Not Have Heard Of Is Disrupting A $200 Billion IndustryEverQuote Insurance Quotes
First Pics: See the New Cars Coming for 2018Kelley Blue Book
by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links
88 comments
Write a comment!
Write new comment:
SubmitCancel
1 Mavaddat J. 19 hours ago Link to comment
I tried following the guide superficially, had to come back to follow it more closely and faithfully. In the end, this procedure worked for me (I used method 2) and my battery is working well again on my 2+ year old Nexus 6P. Thanks for the write-up!
0
Reply
1 Nick Korokis 2 months ago Link to comment
All android smartphones have the same problem with baterry's life and there is no solution at all. Just buy an iphone... ;-)
0
Reply
1 Antonio Pegorelli 1 week ago Link to comment
My mom's iPhone had the same problem 3 months ago. The battery was dropping from 60% to 30% in minutes on idle and the phone was turning off at 20%. She took to the apple store and the Genius guy solution was: "buy a new iphone". It's current battery technology's problem and can happen with every gadget that uses it. The best way to postpone this in our battery powered gadgets is to avoid: plugging the charger every time, getting below 40% and charging over night.
0
Reply
1 88BlueKeys4U 2 months ago Link to comment
Most 'calibration' apps allow for enforcing a 100% mark at any given charge voltage. Which makes sense, if the phone does not reach 100% by itself, while the battery is hovering at a maximum voltage below the expected one (4.15V or so), e.g. when getting worn/older.
But what to do if the percentage counter drops to 1% while the battery is still at a strong 3.74V level, far off the critical 3,5V vor Li batteries? How can I FORCE the system to stay up anyway?
How can I adjust the VOLTAGE/PERCENTAGE relationship in Android? Apparently the system TRIES to be smart and shifts this relationship over time and after each charge cycle. But it makes HUGE errors and does not allow for a full usage of my 5000mAh battery this way.
I know of a guy who owns the SAME device (Voyo Q101 4G) and saw his tablet's battery drop below 3V without shutting down. Mine does the opposite: it will not allow me to use it at ranges below 3.70V, no matter how much is left.
Android revision changed so often over the years, yet they still have not learned to read battery voltage curves reliably???
0
Reply
1 Megan Whitmore 8 months ago Link to comment
When I try to drain the battery on my Motorola G it eventually gets to the point where, whenever I turn it on, it shuts off immediately afterwards. The problem with this is that it never truly gets to 0%; when I move onto the next step--plug you phone in until it is at 100%--it starts off at 40% not 0%. I was wondering if anyone else was having a similar problem with their device, and if they had found a solution or if the solution in the above article works even when the battery never gets to 0%. I'm also having issues with the flashlight widget and was wondering if they were related, because they both started to occur on the same day. Every time I click the widget the light flashes for half a second and then turns off, while the widget still indicates it is on.
0
Reply
1 Jacob Jose 8 months ago Link to comment
You mean most of the time the phone will show 100% after starting.
0
Reply
2 Eugenios Alexander 8 months ago Link to comment
I did the method 2 on a new genuine Samsung battery for my Note II. I have the battery for 2 months and for the past three days, in the morning the battery went from 30% to 0% the first day, from 50% to 0% the second day (on which I did a complete factory reset), and from 75% to 0% the third day. When trying to discharge the battery it took about 2 more hours after reaching 3%. It was working for 2 hours on 3%. I found that kind of weird but I guess that is why it needed to be calibrated. If this method works I will tell you tomorrow.
Update:
The procedure worked! The battery does not drop to 0% anymore. I did however find that the Android OS was eating up 61% of my battery. It seems that the phone is working okay again. Will be checking the battery every morning. Thanks for the help!
0
Reply
1 血と影 9 months ago Link to comment
I tried doing this without root access method, but I don't know what to do since not matter how long I charge, it won't show the 100% charge sign and perpetually stays at 0%... I also tried leaving it charging completely turned off for 5 hours, and I turned it on but it still said 0% even after leaving it charged on for another 3 hours.
0
Reply
1 Nithesh Aravind Oct 7, 2016 Link to comment
will calibration happens automatically if i factory reset the device or it stays with the same problem
0
Reply
1 N JK (Nik) Sep 12, 2016 Link to comment
My Nexus 5 did that once....i swear to god it charged it self a bit all by itself. My dad says some gadgets will do that when u leave them alone. Only happened once tho... seems like magic..lol
0
Reply
2 Tracy Hannon Sep 8, 2016 Link to comment
So I have an extra battery and charger. I use my phone until it turns off, then swap batteries with the fully charged one. Am I doing more harm than good this way? I like it because I'm never tethered to a cord, and I never have a dead phone!
0
Reply
1 Bjoern Buth 1 month ago Link to comment
Hi Tracy, it's ok but if you want to be nice to your batteries it's better not discharge it completely. So I would recommend switching batteries when the battery level drops below 15 percent. Just don't discharge the batteries completely because that will descrease the overall battery life (I mean the overall life, not long it will keep your phone running with one charge).
0
Reply
1 Jude Pasqual Sep 3, 2016 Link to comment
When you say, 'let your phone discharge down to 0', does this mean using the phone to assist in the battery going down? Or do I just leave it until it goes down to 0 (if I leave it, that will be a long time, since the battery meter sometimes goes up even without charging)?
0
Reply
1 Mike Stump Aug 5, 2016 Link to comment
You state in your myth section that deleting batterystats.bin doesn't magically calibrate your battery. However, guess what the app in your method 2 does?
0
Reply
1 Martin Obregon Aug 18, 2016 Link to comment
They said that they still believe that clearing the batterystats.bin doesn't help, but would include method 2 just to be fair. That's why they added method 2. Just in case someone was interested in clearing the batterystats.bin using the app.
0
Reply
1 Billy Osborne Jul 24, 2016 Link to comment
Hey kayshot Kshatriya. Be appreciative that you got an answer at least instead of acting like a douchebag.
0
Reply
1 Kai-M.Lüdeke Jul 24, 2016 Link to comment
My tablet PC charges up 4.15V and shuts down at 3.6V. Is it possible to change the shutdown voltage ? I would like to reduce it to 3.5 or 3.4V.
0
Reply
1 Kayshot Kshatriya Jul 21, 2016 Link to comment
Worst kind of author is one who sucks his own dick by rambling. Took you at least 1000 words to tell us how to calibrate a battery. Nobody cares about all the shit you added.
0
Reply
1 James Chen 7 months ago Link to comment
If you do not care about the other stuff, just scroll down to the section you are interested in, or simply look at the other articles. There are many tech-savvy users who would appreciate the details. If there are something to blame, you should blame the search engine that directed you to this website because it failed to learn your preferences.
0
Reply
1 Kai-M.Lüdeke Jul 11, 2016 Link to comment
I have applied method 1 to a Medion/Lenovo LIFETAB S10346 Tablet PC with a bad battery. The first discharge cycle (step 1) took about 80 minutes at the brightest display setting. The second discharge cycle (step 8) took about 60 minutes. So things actually got worse.
0
Reply
Show all comments
Write a comment!
How to fix a phone that won't charge properly
How to charge your Android phone battery faster
Jump to section:
Is my battery the problem?
Should I calibrate my phone's battery?
What is battery calibration?
Smartphone battery myths
How to calibrate an Android device battery without root access
How to calibrate an Android device battery with root access
How do I know whether my battery is the problem?
First of all, you need to identify why your battery performance has decreased: is it the Android system's calibration or the battery itself? We'll move onto calibration in the sections below, but you should check if your battery itself is damaged first.
If your phone has a removable battery cover, turn off your phone, remove the cover and inspect the battery. Look for bulges or leaks. In the image below, you'll see what a normal battery looks like next to a swollen one. If your phone doesn't sit flat on the table anymore, that could also be a sign of a swollen battery too.
A swollen battery is easy to spot. / © ANDROIDPIT
Should I calibrate the battery?
If you're satisfied that the battery itself is not the problem, you can move on to the steps below. If you think your battery might be the problem (even after trying to recalibrate it), we'd advise you to take it to a repair shop for an expert's opinion. If it turns out you need to replace the battery, go with an original or reliable third-party battery. Scrimping on a cheap knock-off battery only leads to more headaches in the long run.
Opinion by Kris CarlonBattery problems are very annoying
What do you think?
50503765 participants
Keep in mind that there are plenty of other things that can cause a battery to malfunction. If your phone doesn't charge, there might be a problem with the port, so check our guide on what to do when a phone won't charge.
If you've just updated the firmware on your phone, battery drain is a common complaint, so you might want to clear the cache partition on your device. Thankfully, we have plenty of guides on how to clear the cache on various devices.
It's a good idea to be familiar with what's normal for your battery. / © ANDROIDPIT
What is calibrating a battery?
The Android operating system has a feature called Battery Stats, which keeps track of battery capacity, when it is full or empty. The problem is that it sometimes becomes corrupted and starts displaying data that isn’t real, which, for example, causes the phone to turn off before it reaches 0 percent. Calibrating your Android battery simply means getting the Android OS to correct this information so it is reflective of your actual battery levels once again.
It's important to understand that you can't actually calibrate the battery itself: it is, after all, just a cell that stores power and discharges. However, lithium-ion batteries do include a printed circuit board (PCB), which serves as a protection switch to stop them exploding or deep discharging.
Although some batteries can explode, it is rare. / © ANDROIDPIT
Smartphone battery myths
Lithium-ion batteries don't have a memory so there's not much you need to do to keep them running as they should. The problem lies with how the Android system reads and displays the current capacity of the battery, not the battery itself.
The same goes for the myth that deleting the batterystats.bin file will magically recalibrate your battery. That file (on most devices anyway) simply stores data about what is using the battery when it is not being charged. It is also reset every time a battery is charged to over 80 percent and then disconnected from the charger.
The batterystats.bin file contains the info you see made prettier in the Battery section of your phone: it's the Android system keeping track of your battery's usage, per charge cycle. When we talk about battery calibration, it's the percentage meter that gets out of whack, and that is what we need to fix.
If your battery indicator is out of whack, you should try to recalibrate it. / © ANDROIDPIT
How to calibrate an Android device battery without root access
The old 'fully charge and discharge' approach stands as one of the simplest ways to 'recalibrate' your Android battery. We've warned you in the past about low voltage problems in lithium batteries and the negative impacts of fully draining a battery on its lifespan and the same holds true here. But, if your phone battery is causing you real problems, it's worth taking the risk.
Method 1
1. Discharge your phone fully until it turns itself off.
2. Turn it on again and let it turn itself off.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on-screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. Repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without it being plugged in.
8. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again.
9. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage.
Remember that it is not recommended to perform this process regularly. Even when your battery is so dead your phone won't even turn on, your battery still has enough reserve charge to avoid system damage. But you don't want to poke the tiger with a stick. Perform this process once every three months at the most. If it is required more often than that, you have bigger problems at hand.
Put plainly: fully discharging a battery is bad for it. Trying to overload a battery is also bad for it. The good news is that charging batteries will shut off automatically when they've reached their safe limit and there's always a little in reserve even if your phone won't start. Again: only do this when really necessary, because it does have a negative impact on battery life.
If your phone has root access you can clear the batterystats.bin file. / © AndroidPIT
How to calibrate an Android device battery with root access
Even though I'm not convinced that clearing the batterystats.bin file has any meaningful effect on how the Android system reports remaining battery charge, there are those who swear by this method.
So in the interest of fairness, we've included the process for you here (it is true that different manufacturers use the batterystats.bin file for different things). It's basically the same process as above, but with the added step of using a root-enabled app.
Method 2
1. Discharge your phone fully until it turns itself off.
2. Turn it on and let it turn off again.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on the screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. You want to repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without it being plugged in.
8. Now, install the Battery Calibration app, and before you launch it, make sure your battery is at 100 percent again, then restart.
Battery Calibration 9. Immediately launch the app and recalibrate your battery.
10. Once you've calibrated your battery, discharge it all the way down to 0 percent and let your phone turn off again.
11. Fully charge the battery one more time without interruption while it's switched off, and the Android system's battery percentage will be reset.
That's it. Have you tried any of these methods? Do you know an alternate way to fix battery problems? Let us know in the comments.
Where to buy Samsung Galaxy S7 Edge
Best price Samsung Galaxy S7 edge SM-G935 - 32GB - Gold Platinum T-Mobile, Metro, simple... $375.00
Shipping from $10.00
$385.00 total
Check Offer
Samsung Galaxy S7 edge SM-G935 - 32GB - Gold Platinum T-Mobile, Metro, simple... $375.00
Shipping from $10.00
$385.00 total
Check Offer
New Samsung Galaxy S7 edge G935T Silver T-Mobile Family Ultra Lyca Mobile Andrd $389.99
$389.99 total
Check Offer
New Samsung Galaxy S7 edge G935T Gold T-Mobile Family Ultra Lyca Mobile Andrd $399.99
$399.99 total
Check Offer
Samsung Galaxy S7 Edge ( AT&T ) - G935A - 32GB - Silver Titanium - CLEAN IMEI $399.99
$399.99 total
Check Offer
Compare prices
1,129 Shares
Share on Facebook Tweet on Twitter Share on Google+ 1,129 Shares
More from the web
Say Goodbye to Phone Bills Forever With One Super-Low Wireless Payment Per Year!MintSim
How I Found Motivation by Ditching Earbuds and Embracing DiscomfortZappos
Monterey Park, California: This Company You May Not Have Heard Of Is Disrupting A $200 Billion IndustryEverQuote Insurance Quotes
First Pics: See the New Cars Coming for 2018Kelley Blue Book
by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links
88 comments
Write a comment!
Write new comment:
SubmitCancel
1 Mavaddat J. 19 hours ago Link to comment
I tried following the guide superficially, had to come back to follow it more closely and faithfully. In the end, this procedure worked for me (I used method 2) and my battery is working well again on my 2+ year old Nexus 6P. Thanks for the write-up!
0
Reply
1 Nick Korokis 2 months ago Link to comment
All android smartphones have the same problem with baterry's life and there is no solution at all. Just buy an iphone... ;-)
0
Reply
1 Antonio Pegorelli 1 week ago Link to comment
My mom's iPhone had the same problem 3 months ago. The battery was dropping from 60% to 30% in minutes on idle and the phone was turning off at 20%. She took to the apple store and the Genius guy solution was: "buy a new iphone". It's current battery technology's problem and can happen with every gadget that uses it. The best way to postpone this in our battery powered gadgets is to avoid: plugging the charger every time, getting below 40% and charging over night.
0
Reply
1 88BlueKeys4U 2 months ago Link to comment
Most 'calibration' apps allow for enforcing a 100% mark at any given charge voltage. Which makes sense, if the phone does not reach 100% by itself, while the battery is hovering at a maximum voltage below the expected one (4.15V or so), e.g. when getting worn/older.
But what to do if the percentage counter drops to 1% while the battery is still at a strong 3.74V level, far off the critical 3,5V vor Li batteries? How can I FORCE the system to stay up anyway?
How can I adjust the VOLTAGE/PERCENTAGE relationship in Android? Apparently the system TRIES to be smart and shifts this relationship over time and after each charge cycle. But it makes HUGE errors and does not allow for a full usage of my 5000mAh battery this way.
I know of a guy who owns the SAME device (Voyo Q101 4G) and saw his tablet's battery drop below 3V without shutting down. Mine does the opposite: it will not allow me to use it at ranges below 3.70V, no matter how much is left.
Android revision changed so often over the years, yet they still have not learned to read battery voltage curves reliably???
0
Reply
1 Megan Whitmore 8 months ago Link to comment
When I try to drain the battery on my Motorola G it eventually gets to the point where, whenever I turn it on, it shuts off immediately afterwards. The problem with this is that it never truly gets to 0%; when I move onto the next step--plug you phone in until it is at 100%--it starts off at 40% not 0%. I was wondering if anyone else was having a similar problem with their device, and if they had found a solution or if the solution in the above article works even when the battery never gets to 0%. I'm also having issues with the flashlight widget and was wondering if they were related, because they both started to occur on the same day. Every time I click the widget the light flashes for half a second and then turns off, while the widget still indicates it is on.
0
Reply
1 Jacob Jose 8 months ago Link to comment
You mean most of the time the phone will show 100% after starting.
0
Reply
2 Eugenios Alexander 8 months ago Link to comment
I did the method 2 on a new genuine Samsung battery for my Note II. I have the battery for 2 months and for the past three days, in the morning the battery went from 30% to 0% the first day, from 50% to 0% the second day (on which I did a complete factory reset), and from 75% to 0% the third day. When trying to discharge the battery it took about 2 more hours after reaching 3%. It was working for 2 hours on 3%. I found that kind of weird but I guess that is why it needed to be calibrated. If this method works I will tell you tomorrow.
Update:
The procedure worked! The battery does not drop to 0% anymore. I did however find that the Android OS was eating up 61% of my battery. It seems that the phone is working okay again. Will be checking the battery every morning. Thanks for the help!
0
Reply
1 血と影 9 months ago Link to comment
I tried doing this without root access method, but I don't know what to do since not matter how long I charge, it won't show the 100% charge sign and perpetually stays at 0%... I also tried leaving it charging completely turned off for 5 hours, and I turned it on but it still said 0% even after leaving it charged on for another 3 hours.
0
Reply
1 Nithesh Aravind Oct 7, 2016 Link to comment
will calibration happens automatically if i factory reset the device or it stays with the same problem
0
Reply
1 N JK (Nik) Sep 12, 2016 Link to comment
My Nexus 5 did that once....i swear to god it charged it self a bit all by itself. My dad says some gadgets will do that when u leave them alone. Only happened once tho... seems like magic..lol
0
Reply
2 Tracy Hannon Sep 8, 2016 Link to comment
So I have an extra battery and charger. I use my phone until it turns off, then swap batteries with the fully charged one. Am I doing more harm than good this way? I like it because I'm never tethered to a cord, and I never have a dead phone!
0
Reply
1 Bjoern Buth 1 month ago Link to comment
Hi Tracy, it's ok but if you want to be nice to your batteries it's better not discharge it completely. So I would recommend switching batteries when the battery level drops below 15 percent. Just don't discharge the batteries completely because that will descrease the overall battery life (I mean the overall life, not long it will keep your phone running with one charge).
0
Reply
1 Jude Pasqual Sep 3, 2016 Link to comment
When you say, 'let your phone discharge down to 0', does this mean using the phone to assist in the battery going down? Or do I just leave it until it goes down to 0 (if I leave it, that will be a long time, since the battery meter sometimes goes up even without charging)?
0
Reply
1 Mike Stump Aug 5, 2016 Link to comment
You state in your myth section that deleting batterystats.bin doesn't magically calibrate your battery. However, guess what the app in your method 2 does?
0
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1 Martin Obregon Aug 18, 2016 Link to comment
They said that they still believe that clearing the batterystats.bin doesn't help, but would include method 2 just to be fair. That's why they added method 2. Just in case someone was interested in clearing the batterystats.bin using the app.
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1 Billy Osborne Jul 24, 2016 Link to comment
Hey kayshot Kshatriya. Be appreciative that you got an answer at least instead of acting like a douchebag.
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1 Kai-M.Lüdeke Jul 24, 2016 Link to comment
My tablet PC charges up 4.15V and shuts down at 3.6V. Is it possible to change the shutdown voltage ? I would like to reduce it to 3.5 or 3.4V.
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1 Kayshot Kshatriya Jul 21, 2016 Link to comment
Worst kind of author is one who sucks his own dick by rambling. Took you at least 1000 words to tell us how to calibrate a battery. Nobody cares about all the shit you added.
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1 James Chen 7 months ago Link to comment
If you do not care about the other stuff, just scroll down to the section you are interested in, or simply look at the other articles. There are many tech-savvy users who would appreciate the details. If there are something to blame, you should blame the search engine that directed you to this website because it failed to learn your preferences.
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1 Kai-M.Lüdeke Jul 11, 2016 Link to comment
I have applied method 1 to a Medion/Lenovo LIFETAB S10346 Tablet PC with a bad battery. The first discharge cycle (step 1) took about 80 minutes at the brightest display setting. The second discharge cycle (step 8) took about 60 minutes. So things actually got worse.
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