of course in most cases I will not do this trick but for battery recalibration since my phone battery indicator is totally a joke
I wanna give it a shot just once but I am worried because somebody says it will harm the battery life or even worse, let it dead(neither turned on nor charged). and many people also swear by completely discharging the battery all the way down and recharge it to 100% from time to time to reset the battery stat and have it work as it used to
so these two claims are contradictory each other so one of them is wrong.
please point out the right way for me. thanks
it likely won't kill the battery if it happens once (or occasionally), but i don't think it is recommended to do this regularly.
battery indicators are never perfect.
First of all, completely draining your battery could damage your phone and would reduce your battery lifespan. I recommend you to stop using the phone when the battery drops to 5-15%.
And battery calibration is 100% myth. Battery calibration just removes batterystats.bin and re-generate a new one. Android does the same once our device is fully charged.
Sent from my ASUS_Z00A using XDA Labs
krasCGQ said:
First of all, completely draining your battery could damage your phone and would reduce your battery lifespan. I recommend you to stop using the phone when the battery drops to 5-15%.
And battery calibration is 100% myth. Battery calibration just removes batterystats.bin and re-generate a new one. Android does the same once our device is fully charged.
Click to expand...
Click to collapse
well you're true but not all about the battery calibration,there another method which work and not a myth.the method is by charging upto the devices's limit voltage it can hold,you may have seen about "please charge your device 10 minutes more" its actually calibrating the phone's battery.but dont too overcharge it,it may get damaged,so be careful.
Thunderoar said:
the method is by charging upto the devices's limit voltage it can hold,you may have seen about "please charge your device 10 minutes more" its actually calibrating the phone's battery.but dont too overcharge it,it may get damaged,so be careful.
Click to expand...
Click to collapse
You mean trickle charging? It's for stabilize battery's voltage.
Sent from my ASUS_Z00A using XDA Labs
Related
Is it necessary to calibrate after flashing a new kernel?
Not really. I found my battery life is better after I flashed the new voodoo kernel by jt. If you do have some bad battery life, it would be suggested you do calibrate your battery.
how do you calibrate your battery also i notice after i charge my battery all nite the next morning i start off with either 99 or 98 percent any reason why???
Calibration of the battery isn't really required if you flash at 100% each time.
mrtonee said:
how do you calibrate your battery also i notice after i charge my battery all nite the next morning i start off with either 99 or 98 percent any reason why???
Click to expand...
Click to collapse
This is expected behavior designed to protect the life of your battery. basically what happens is your phone will charge to 100%. It's not good for a li-on battery to stay at that stress level so the phone will then allow the battery to discharge to 95%. Once it hits 95% you will start charging back up to 100% and the process will repeat. If the phone didn't do this the battery would degrade much more rapidly.
Sent from my SCH-I500 using XDA Premium App
thank you some days its good and some days its bad........
,this is how i calibrate my battery,before i have 45min of standby it will decrease from 100% to 99% but now it is 2hours & 34min before it go from 100% to 99%,i felt the drain after 2 weeks of overusing my phone (1week playing paladog and 1 week flashing different roms,kernels and theming my phone with different launchers),
- Charge your phone to 100% while it’s on.
- Unplug it from the charger, power off, then charge for 15 minutes with it in a powered off state.
- Unplug charger from phone. Power it on, and then charge 15 minutes while the phone is on.
- Calibrate battery using battery calibration by NéMa then unplug charger reboot.
- Power on, charge for 15 minutes then unplug.
- Finished.
note: deleting battery stats(calibrating) don't increase your batterylife said by others and it is just a placeboo and i believe in them,but it fix my battery drain so why don't we give it a try,there is nothing to lose,battery drain is so annoying.
,thanks to NéMa for the awesome apps,
,thanks to jgezau for his thread as my reference,
,please hit thanks if this helps,
check this out...
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
kiran2cy said:
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
Click to expand...
Click to collapse
1% decrease in 2hours and 38 mins,as you can see i didnt fully left it in standby,i use it for text sometime,and also my phone signal is not that strong,but that's a best battery life 5+hours still 100%,^^,thumbs up to lewa i use it too,the m4 and m6,m7 is uploading now,^^
Great thanks man !
kiraXce said:
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
Click to expand...
Click to collapse
Wich rom are you using?
Sent from my LG-P500 using xda app-developers app
I'd love to try this but powered off charging is not present on the rom i'm using.
Thanks
Sent from my LG-P500 running Ginger Snap
lipe082 said:
Wich rom are you using?
Sent from my LG-P500 using xda app-developers app
Click to expand...
Click to collapse
That was from LEWA OS, one of the best rom at that time...:good:
First and foremost, a Google engineer debunked the idea that batterystats.bin has anything to do with how the phone charges. By deleting it, you're actually inconveniencing yourself, as there will be a short period in which you won't have accurate stats.
Secondly, the O1 has a lithium ion battery. Lithium ion and lithium polymer batteries don't need to be calibrated, as they have no "memory" effect (you can read more on that here).
Moreover, these batteries have built in charge circuits that protect and regulate the battery. Ever wonder how the phone knows the battery temperature? It's pulling it off the charge circuit. That same circuit also prevents the battery from ever being overcharged or discharged fully, which is why that convoluted guide about calibrating your battery by draining it to "empty" and then recharging it to full doesn't work. Worse yet, intentionally draining your battery is actually counter-intuitive, as lithium-based cells wear more as their percentage of discharge increases (you'd be hurting the battery in your effort to calibrate it).
Your instructions aren't detrimental, so if it works for you, go for it. However, based on my understanding of these batteries, it seems to me that this procedure is inconsequential.
Besides, a new battery for the O1 is only $6 USD on Amazon or Ebay.
I have seen lots of threads about people complaining about very poor battery life after flashing roms. Sometimes battery charges to 100% quickly and discharges very quickly.
So, these are the solutions. These solutions are IN ORDER. If the first one has no effect, then try the next one. If the second one doesn't work, then try the third one.
Now-
1) Try reflashing your ROM.
2) If reflashing your current ROM doesn't work, that probably means the ROM itself has poor battery life and you should change it. Stock ROM's have the best battery life.
3) If you are on stock ROM and still having problems, switch off your phone, take off the back cover and remove the battery. If the battery is swollen or the shaped weirdly, this means your battery is dead and almost useless. You need to buy a new one.
I recommend buying only stock batteries manufactured by Samsung because other batteries can be fake, incompatible, or just used batteries sold to you. Don't buy anything else unless you're absolutely sure of what you're doing.
Hopefully I helped.
Re: Solutions to Battery Problems[Newbie Friendly]
General tips for saving your battery-
1) Switch off mobile data whenever you're not using the internet.
2) Change your wifi sleep policy. This can be done by going to wifi settings, pressing menu button and then select advanced.
You can change your sleep policy so that your wifi sleeps when the screen is off.
3) Decrease your brightness! Your screen is responsible for most of the battery drain. Increase your brightness only when you are in bright sunlight or when you're watching videos etc.
4) Switch off GPS. Keeping it on all the time also drains a lot of battery.
5) There is an app called 'Greenify' which hibernates the apps running in the background. This app has increased my battery life. Here a link https://play.google.com/store/apps/...e=google&utm_medium=organic&utm_term=greenify
6) Don't charge your phone when it's at 70%. Wait till it is between 20-30% and then charge it continuously till it reaches 100%.
7) Let your battery completely discharge once every month.
8) Don't use task killers. They use more battery life than they save.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
10) If you use a Bluetooth headset, switch off Bluetooth whenever not in use.
11) Using setCPU profiles. This is one of the most effective ways of saving battery. You all know about overclocking, but do you know about underclocking or undervolting? Using profiles, You decrease the clock speed of your CPU when certain conditions are met. These profiles can be on the basis of time, screen off/on, battery etc. So when my screen is off, it automatically reduces the clockspeed which saves battery
chalak said:
General tips for saving your battery-
1) Switch off mobile data whenever you're not using the internet.
2) Change your wifi sleep policy. This can be done by going to wifi settings, pressing menu button and then select advanced.
You can change your sleep policy so that your wifi sleeps when the screen is off.
3) Decrease your brightness! Your screen is responsible for most of the battery drain. Increase your brightness only when you are in bright sunlight or when you're watching videos etc.
4) Switch off GPS. Keeping it on all the time also drains a lot of battery.
5) There is an app called 'Greenify' which hibernates the apps running in the background. This app has increased my battery life. Here a link https://play.google.com/store/apps/...e=google&utm_medium=organic&utm_term=greenify
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
7) Let your battery completely discharge once every month.
8) Don't use task killers. They use more battery life than they save.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
10) If you use a Bluetooth headset, switch off Bluetooth whenever not in use.
Using these tips, I have gotten almost 2 days of battery life on stock Roms and a whole day of battery life on custom roms like CM10.1 and CM7
If you have your own battery saving tips, please share and help expand this list.
Click to expand...
Click to collapse
I'm interested in the greenify app, the only problem is that it does not support stock gingerbread which can give the most juice. Do you have any other recommendations of similar apps?
stevenkyk said:
I'm interested in the greenify app, the only problem is that it does not support stock gingerbread which can give the most juice. Do you have any other recommendations of similar apps?
Click to expand...
Click to collapse
Greenify is a unique app and I am yet to come across a similar app.
You can try this one but it is paid - https://play.google.com/store/apps/details?id=com.elsdoerfer.android.autostarts
Sent from my pet - Megatron™
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
Are you sure about these? Because I've read that phones only take how much ever charge that they need, so charging overnight isn't a problem. And i've also heard that letting the battery charge fall below 40% actually reduces the life over time.
Ajayr64 said:
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
Are you sure about these? Because I've read that phones only take how much ever charge that they need, so charging overnight isn't a problem. And i've also heard that letting the battery charge fall below 40% actually reduces the life over time.
Click to expand...
Click to collapse
Yes, I am sure and it is something I have verified.
Overcharging kills the battery.
I saw a video once of an evo 3d. The battery almost completely died after it was charged for 3 days
And you should always charge only when your battery is low.
This will ensure longer battery life
chalak said:
Overcharging kills the battery.
Click to expand...
Click to collapse
Normally, when the battery is fully charged, the chip that controls the charging process reduce the current exponentially to 0: this avoid the overcharging.
I think all smartphones have the charging chip control integrated (an USB cable is simply a power source, not a battery charger), so I hope we can leave the phones on charge all the night without any problem. I do that always and never had problems.
Clearing battery stats has no effect whatsoever on battery life ...
Prawesome said:
Clearing battery stats has no effect whatsoever on battery life ...
Click to expand...
Click to collapse
Well, if you see again, I never mentioned that clearing battery stats saves battery. It is for those people whose phone charges very quickly with big increments, which typically happens after changing ROM's.
Sent from my pet - Megatron™
smanq said:
Normally, when the battery is fully charged, the chip that controls the charging process reduce the current exponentially to 0: this avoid the overcharging.
I think all smartphones have the charging chip control integrated (an USB cable is simply a power source, not a battery charger), so I hope we can leave the phones on charge all the night without any problem. I do that always and never had problems.
Click to expand...
Click to collapse
It seems both of us have read conflicting and contradicting things.
Sent from my pet - Megatron™
chalak said:
Well, if you see again, I never mentioned that clearing battery stats saves battery. It is for those people whose phone charges very quickly with big increments, which typically happens after changing ROM's.
Sent from my pet - Megatron™
Click to expand...
Click to collapse
Quoting Dianne Hacborn(Android Framework Engineer):
"Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away."
Its just a myth mate..
And also, it's a myth that you should let ur phone charge reach 10% or get fully discharged before charging. This actually leads to decrease in the battery life over time.
Prawesome said:
Quoting Dianne Hacborn(Android Framework Engineer):
"Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away."
Its just a myth mate..
Click to expand...
Click to collapse
I am aware of what you are saying and I fully agree.
But I have never mentioned that clearing battery stats increases battery life!
Tips to increase battery life are in the 2nd post. I simply said that if you clear your battery stats, UI will show you battery which is more accurate to the actual battery level.
Why are you arguing over something I never said?
Sent from my pet - Megatron™
Ajayr64 said:
And also, it's a myth that you should let ur phone charge reach 10% or get fully discharged before charging. This actually leads to decrease in the battery life over time.
Click to expand...
Click to collapse
Think of your battery as a person working out and charging is like taking rest. If the person's ability is to do 100 reps yet he takes rest after only 60 reps and keeps doing that continuously, he won't be able to do 100 reps after a few weeks!
Look at the logic mate.
Sent from my pet - Megatron™
chalak said:
I am aware of what you are saying and I fully agree.
But I have never mentioned that clearing battery stats increases battery life!
Tips to increase battery life are in the 2nd post. I simply said that if you clear your battery stats, UI will show you battery which is more accurate to the actual battery level.
Why are you arguing over something I never said?
Sent from my pet - Megatron™
Click to expand...
Click to collapse
I am not arguing :/
I am just trying to help make your guide more Informative. Read what I have put in bold letters mate. It doesn't affect the battery level shown to you
Prawesome said:
I am not arguing :/
I am just trying to help make your guide more Informative. Read what I have put in bold letters mate. It doesn't affect the battery level shown to you
Click to expand...
Click to collapse
Sorry if I sounded rude.
And thank you for your advice.
Sent from my pet - Megatron™
Updated
Sent from my pet - Megatron™
(I was Chalak)
Thanks for tips
You misunderstood me :'D
Clearing battery stats does not:
Affect battery life
Affect the battery level displayed to you
The only thing it does is, it wipes the history of battery consumption by each app. I am talking about the battery consumption by each app shown to you in Settings>About phone. If you clear the battery stats.bin file, the only thing that geta erased is this
Prawesome said:
You misunderstood me :'D
Clearing battery stats does not:
Affect battery life
Affect the battery level displayed to you
The only thing it does is, it wipes the history of battery consumption by each app. I am talking about the battery consumption by each app shown to you in Settings>About phone. If you clear the battery stats.bin file, the only thing that geta erased is this
Click to expand...
Click to collapse
This! Anything about wiping battery stats is not a myth anymore, so please stop misleading people,
Also "6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%."
Not true! Charging your battery around 50% is the most efficient way to keep lithium battery alive longer. A discharge once a month is also recommended.
My phone basically runs out of juice at 4%, which is weird because it doesn't run all the way down to 0% before turning itself off and unable to turn it back on. Is anyone else having this issue and knows what's going on? Thank you!
Basically for safety reasons no device will ever get to 0%, that would screw your battery.
Less then 10% the device should auto shut down to prevent this.
Google can tell u more.
Sent from my HTC One X+ using xda premium
somemadcaaant said:
Basically for safety reasons no device will ever get to 0%, that would screw your battery.
Less then 10% the device should auto shut down to prevent this.
Google can tell u more.
Sent from my HTC One X+ using xda premium
Click to expand...
Click to collapse
0% should be the level when the phone shuts down for safety reasons. it's known that it is healthier not to discharge your battery to 0% but it also should not shut down before reaching 0%.
my Battery also drains very quickly when reaching 14% or less, i think it's because battery voltage decreases very fast when the battery is almost empty, so i assume it is related to voltage readings.
i think you have to live with it, also shouldn't be a problem (at least for me) because battery life until it reaches 20% is good enough.
reaper90 said:
0% should be the level when the phone shuts down for safety reasons. it's known that it is healthier not to discharge your battery to 0% but it also should not shut down before reaching 0%.
my Battery also drains very quickly when reaching 14% or less, i think it's because battery voltage decreases very fast when the battery is almost empty, so i assume it is related to voltage readings.
i think you have to live with it, also shouldn't be a problem (at least for me) because battery life until it reaches 20% is good enough.
Click to expand...
Click to collapse
I have the same symptom. It will shut off when it get below 14%. Is it good or not? Will a re-calibration make the battery go further close to 0% before it shuts off? Thank you
I don't know, I never tried
Sent from my HTC One X+ using xda app-developers app
How can we wipe battery stats? Is it available in twrp?
JustinBieber said:
How can we wipe battery stats? Is it available in twrp?
Click to expand...
Click to collapse
Some time ago, a google engineer stated that batterystats file has nothing do with battery life of the phone, this file only contents the statistics of your battery usage.
Maybe google "one x battery calibration" and see what you can find, but i don't know if these things work or even make it worse...
I recently had my Thunderbolt replaced with a refurb from Verizon. When I got the new phone I removed my old battery, which was working fine, from my old phone and placed it in my new phone. Now in the new phone I fully charge the battery and I get about 45 minutes to an hour of battery life before my phone is down to 2% battery life. However, the phone then has the same battery life as it did in my old phone, it just still says there is only 2% battery life left.
I'd tried completely killing the battery then recharging fully for about a week. The battery stats never reset.
I then rooted my phone, charged it completely and purged the battery stats. The issue persists.
Sounds like an aftermarket, non-oem battery...is it?
If it isn't a stock oem battery and especially if running ICS, it will not read correctly.
It may charge and discharge properly, but may never read accurately.
If it is an oem battery, then you got me.
Well i did this thing on my cousin's Htc Amaze a long time ago
i used die hard battrey calibirator to calibrate the battery. the phone was showing 2 percent supposed to be 170 percent so i pressed calibrate button and it worked for about a week until the battery had the same error
try doing that it might do something... or nothing at all but worth a try
santod040 said:
Sounds like an aftermarket, non-oem battery...is it?
If it isn't a stock oem battery and especially if running ICS, it will not read correctly.
It may charge and discharge properly, but may never read accurately.
If it is an oem battery, then you got me.
Click to expand...
Click to collapse
Nope, it's the original battery I received with the phone. I'd understand if it were just time for a replacement but the fact that it stays awake at 2% for so long leads me to believe it's not actually an issue with the battery.
If you calibrate the battery incorrectly it can make the phone display the wrong amount. I did this before using die hard battery calibrator. To manually recalibrate. Discharge the phone totally and then charge it until the green light comes on. Boot into recovery and then wipe battery stats in recovery. That might help you out but I somehow doubt itm
Sent from my ADR6400L using Tapatalk 2
I tried using a battery calibration app and haven't seen any change.
I also looked for my batterystats.bin file in /data/system to manually delete using a file explorer but I didn't see it there. Does anyone know why that may be or if that could contribute to the issue?
I also looked for my batterystats.bin file in /data/system to manually delete using a file explorer but I didn't see it there. Does anyone know why that may be or if that could contribute to the issue?
Click to expand...
Click to collapse
Disregard that, turns out I didn't have ES File Explorer with root permission.
Li-on batteries don't actually perform the way many people think they do. They do not discharge in a linear fashion. That's what makes metering them on the phone so complicated. As the battery ages it's non-linear output changes as well, and that's what the statistics are designed to correct for when displaying a charge level.
Here's how you know your battery is a dud.
Pay attention to the voltage. As a Li-on battery discharges it discharges in a very flat way. The battery is fully charged when the voltage curve of the battery begins to ramp up sharply. The battery is technically dead when the voltage begins to drop off sharply. What ultimately renders a Li-on battery garbage is when that fat flat spot in it's voltage/charge curve drops below a threshold that will power the device. If the battery is displaying adequate voltage for a reasonable length of time and the phone still reads inaccurate, then it's the fault of the phone.