There have been about eleventeen thousand questions across multiple threads on how to calibrate the battery properly...figured it probably should be a sticky in here if possible.
You have to know how to get into Recovery mode. You can do this with Quickboot when the phone is on, or the powered off phone method:
1. Power off phone or pull battery and replace.
2. Hold all three of these buttons down: Vol-Down, Camera button (lower left as you look at the phone) and Power on button).
3. You will see a small graphical menu come up. Most of us are using Clockwork, so I will focus on that - it will be a green menu.
For the battery wipe, Go to Advanced, navigate the menu with the vol up/down keys, and select using the camera button.
There are three ways so far:
The Drain Way:
1. Drain it down until fully dead.
2. Charge normally to full.
3. Reboot to Clockwork recovery and wipe battery stats (under advanced, on second page), reboot phone.
4. Turn everything on, flashlight, Bluetooth, Wi-Fi, Pandora, the whole nine, to quickly drain it completely dead.
5. Charge normally to full.
The Powered Off Charge way:
1. Charge your phone 100% while it’s on
2. Unplug it from the charger, power off, then charge it up to 100% with it in a powered off state.
3. Unplug charger from phone. Power it on, and then charge it to 100% while the phone is on.
4. Unplug the charger and then reboot into Clockwork, go to advanced and clear the battery stats.
5. Power on, charge to full, and then enjoy.
Third option (thanks squshy 7), I paraphrased it and wrote it out a bit for ease.
Maybe we can call it the Mr. Miagi Charge way....aka Power On, Power Off, Charge On, Charge Off way lol
(the parentheses are the state of the phone)
1. Start with the phone powered on.
2. (Phone on) Charge battery until the LED turns blue
3. (Phone on) Unplug the phone from the charger, wait until the LED turns off
4. Power off the phone.
5. (Phone off) Plug the adapter into the phone, charge it up until the LED turns blue
6. (Phone off) Unplug, wait until the LED turns off
7. Power the phone on.
8. Wait until the phone is booted back up all the way, and then power it off again
9. (Phone off) Plug the adapter into the phone, charge it up until the LED turns blue.
10. Boot the phone into recovery mode
11. Go to Advanced, and then choose Wipe Battery Stats.
12. Power the phone on and use normally.
Still a noob, but what would exactly need you to have to Calibrate Battery? Also what exactly does it do for the user?
P.S I'm sure I could look this up but it would be nice to see it in your thread for others to see
turtlenator694 said:
Still a noob, but what would exactly need you to have to Calibrate Battery? Also what exactly does it do for the user?
P.S I'm sure I could look this up but it would be nice to see it in your thread for others to see
Click to expand...
Click to collapse
Well it's really a matter of semantics...you're not calibrating the battery, per say...it's actually calibrating how android is reading the battery. (these phones use Li-ion batteries, which don't use memory, so they themselves never actually need "calibrated" like some older types of rechargeables)
But...as far as what this means to you, its kind of a big deal! It improves battery life in letting android know when your battery is actually at 100%. When flashing new kernels and ROMs, its very likely that the phone will read your battery at full, when in reality its probably less. So it would seem like your phone isn't getting as good battery life (when in actuality it just hasn't been charged fully but you don't know that because android reads it as full because it hasn't been calibrated )
also, without a calibration, you might notice your battery gauge draining oddly...for example, you might see it quickly drop from 100 to 89, then drop steadily to 72, and then hang for a while at 71 (these are all just made up numbers)
so it means alot! but everybody has different methods and i've never seen anything officially released by spring or samsung to confirm methods...
I will say this though...I've read plenty about how since these Li-ion batteries don't have memory, the DRAINING method, while maybe correctly calibrating your battery, actually HURT the long-term life of your battery.
so heres what ive always done:
(the parentheses are the state of the phone)
(phone on) charge battery till LED blue
(phone on) unplug, wait till LED off
[POWER OFF]
(phone off) plug in, wait till LED blue
(phone off) Unplug, wait till LED off
[POWER ON]
When completely booted, power off again
(phone off) plug in wait till LED blue,
boot into recovery, wipe battery stats
unplug, reboot phone and use
it's always worked so try it out
Actually I'm pretty sure it doesn't fully charge to prevent over charge.. and the whole deal with you guys chargings 2-3 times after the light turns blue is just killing the life of your battery.
Sent from my SPH-D700 using XDA App
My question why is this in devolpment?
Fyi: both methos work but the complete drain does kill battery life. The pluging in multiable times dont. Android nows wheb to stop charging the battery to prevent over charge.
Sent from my SPH-D700 using Tapatalk
something must be wrong....
With my battery because I've done the above procedure and my battery doesn't even last 5 hours. Its starting to get annoying. Any ideas?
XtaC318 said:
Actually I'm pretty sure it doesn't fully charge to prevent over charge.. and the whole deal with you guys chargings 2-3 times after the light turns blue is just killing the life of your battery.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
If it can stop at 92 percent to prevent overcharging, then it can do the same thing when it reaches 100 percent, no matter how many times you plug it in.
I don't know of many, if any li ion battery packs made today that don't have circuitry in them that prevents overcharging.
I put it in development because when you load roms, generally battery is a big concern. I cant tell you how many times ive searched for the same topic all over, I just figured it would be as helpful to others as it would have been to me had it been here and been a stickie at the top.
I've always thought battery calibration was more of a placebo effect, but I have no data either way. On a related note, here's an interesting article about battery stats and charging that was posted a week or so ago:
Android Police: Your Battery Gauge is Lying to You...
Having a battery keep at a full 100% for a long time is not good for li-on batteries. The 10% between 90 and 100% is basically used as a safety buffer. That's why the charge drops between 100 and 90 is much faster than the drops from 80 to 0. even though there ways to increase the actual capacity of the battery by using the methods above, you will still see a quicker drop from full to 90 almost instantly after unplugging the charger. I am in no way saying that those methods don't work in helping the phone read the actual charge of the battery, but they do help increase capacity a little bit. by rearranging the electrons in the battery. There actually is an article on google and on xda that backs it up. I'll try finding it
Sent from my Samsung-SPH-D700 using XDA App
Thank you a ton for posting this. Ive been trying to find a good thread on this all over the place and there never seems to be one. So thanks again.
will the "Drain Battery" way work with a droid1 with the default battery?
doublea500 said:
will the "Drain Battery" way work with a droid1 with the default battery?
Click to expand...
Click to collapse
Will work on any android device
Sent from my SPH-D700 using Tapatalk
mysteryemotionz said:
Will work on any android device
Sent from my SPH-D700 using Tapatalk
Click to expand...
Click to collapse
thanks believed it or not, you really helped me
mysteryemotionz said:
My question why is this in devolpment?
Fyi: both methos work but the complete drain does kill battery life. The pluging in multiable times dont. Android nows wheb to stop charging the battery to prevent over charge.
Sent from my SPH-D700 using Tapatalk
Click to expand...
Click to collapse
Lol.. wow alright.
Yes COMPLETELY draining a battery is really bad for a battery; infact if you do so you may end up with a 'bricked' battery.
But the phone also knows not to 'over drain' so with the method of clearing batt stats there's no harm done..actually. allowing your phone to die before charging is healthier than plugging it in before it dies.
I won't argue on the other note anymore; well simply because I don't know enough to continue just know I won't be taking that path
Sent from my SPH-D700 using XDA App
Thanks for the response. But also if you have a separate charger because you have multiple batteries, do you need to have to go through any of this? Or will the charger charge them to their true full state?
It will charge them to 100%. You'll notice it holds 100% for a lot longer.
Sent from my SPH-P100 using Tapatalk
The only thing that needs to be done to calibrate the battery is either flash at full charge or charge to full then delete batterystats, all this drain to dead and charge this way and that is pointless, though u will all argue otherwise, pointlessy
Sent from my Epic 4g
Yes thank you very much! I'm gonna give this a shot probably tonight after the Christmas Eve service and see what happens.
You should definitely add that NONE of this matters if your first usages out of the battery aren't proper. When you get the phone, you need to kill the battery before charging.. charge for 10-12 hours w/the phone off or in a dock, kill battery.. repeat 2 more times to condition the battery physically.
I had my phone for 3 months. It did this issue before and I removed the battery, it started. Now, it doesn't start with or without the battery. I plug it and press the power for 10 seconds, nothing happens.
I had the phone running for like 3 days till the battery completely drained.
I plugged the phone and I feel it's warm on the camera area and still doesn't start after charging for a while. Total black screen!
I am on CM7 and CWM recovery installed. Any ideas?
yazer79 said:
I had my phone for 3 months. It did this issue before and I removed the battery, it started. Now, it doesn't start with or without the battery. I plug it and press the power for 10 seconds, nothing happens.
I had the phone running for like 3 days till the battery completely drained.
I plugged the phone and I feel it's warm on the camera area and still doesn't start after charging for a while. Total black screen!
I am on CM7 and CWM recovery installed. Any ideas?
Click to expand...
Click to collapse
Since the battery drained completely it may take an hour or better on charge to get enough juice to restart.
The phone can't start without the battery? with just the charger power?
GTWalling said:
Since the battery drained completely it may take an hour or better on charge to get enough juice to restart.
Click to expand...
Click to collapse
Ya it just needs to get some serious juice on it before it starts weird issue but mine does the same thing. Plug it in to charge with battery and leave it for about 10+ minutes and it should start up with the plug in.
Sent from my LG-P999 using xda premium
It's been plugged in for a long time.. Nothing yet...
and when it's charging, it usually displays a battery charge animation...
but the screen is totally black
I've never attempted to turn it on without the battery, but with mine, when the battery has completely died, I can plug it in and turn it on within 15-30 seconds and use it (as long as it's still plugged in). USB charge, I have to wait a little longer, though.
The battery was ok I had no problems with it and I checked the battery status yesterday it was "4 from 100 points" and "Good" health.
The phone did that with me before but it started charging when I detached the battery and inserted it again. I think it was some sort of hanging up and the battery had to be detached even if the phone was off!
It workedddd! finally!
As I said... I had to detach the battery and the power completely and reinsert the battery... This is really weird :S
Maybe it was flooded.
Sent from my LG-P999 using XDA App
Sounds like a bad battery. Taking li-ion down to fully discharged damages them. The batteries have protection circuitry but if you take it down to nothing and don't charge it right away you could have done permanent damage. If a li-ion is damaged in this way it will never take a charge again. Get a new battery and see if that fixes your problems.
I just let my TF300T run out of battery... And now, after charging it for several hours, I can not switch it on... Nothing happens when I press the power button and when I remove the charging cable and put it back, still no response (I would expect to see the battery image on the screen.)
Does anyone know if this is normal or does the TF300T not survive being totally discharged?
Regards,
BTJ
I've seen this issue with the TF101 before. You should be ok. I believe the resolution was to hold down the power button for 10-20 secs and it should turn on. If not, you will have to charge it for several more hours before it will wake up. According to the manual, minimal charge time is 8 hours for a full charge.
I had to let mine charge for an hour before it would come on
Sent from my VS910 4G using xda premium
cavsoldier19d said:
I've seen this issue with the TF101 before. You should be ok. I believe the resolution was to hold down the power button for 10-20 secs and it should turn on. If not, you will have to charge it for several more hours before it will wake up. According to the manual, minimal charge time is 8 hours for a full charge.
Click to expand...
Click to collapse
Holding the power button for 10-12 seconds made it start... Thx...
Not sure why they have made this feature though...
BTJ
accidental power-on (in bag, under arm, etc)? Just a guess...
Reilly1812 said:
accidental power-on (in bag, under arm, etc)? Just a guess...
Click to expand...
Click to collapse
Yes, but this only happens when one runs out of battery... But not a big deal, as long as one knows about it...
BTJ
Help me guys!....I tried almost everything in youtube and XDA
Power + volume keys for 2mins
Unplugging the battery for some time and plugging it back and charging
Unplugging the screen cable ,charging for 2 hrs and plugging it back
Checking if the battery or charging cable works! (I assumed that the battery works as it heated up while charging )
But unfortunately nothing worked for me. I even gave it to a local service shop and they were like " We don't know whats wrong with this phone". I am trying for the past 3 months but nothing worked.
P.S. : I was not able to power on after the battery went 0% one day!
Thanks in advance
Charge the battery overnight. Unplug it and let it sit for an hour or two. Test the voltage of your battery with it removed. Try to power on the tablet? What's the voltage when you do that?
Same thing happend to my sons P3110.
When se tried to turn it on, it showed the Samsung logo, then turned off again.
I just replaced the battery, and everything is fine again
Ka-B00M said:
Charge the battery overnight. Unplug it and let it sit for an hour or two. Test the voltage of your battery with it removed. Try to power on the tablet? What's the voltage when you do that?
Click to expand...
Click to collapse
Thanks a lot for your information But I'm not much into hardware stuff!
How do I check the voltage of my battery when I try to power it on?
Ratata82 said:
Same thing happend to my sons P3110.
When se tried to turn it on, it showed the Samsung logo, then turned off again.
I just replaced the battery, and everything is fine again
Click to expand...
Click to collapse
Not even getting the logo here! Completely dead
PRADH33P said:
Thanks a lot for your information But I'm not much into hardware stuff!
How do I check the voltage of my battery when I try to power it on?
Click to expand...
Click to collapse
Connect it in parallel with a multimeter
My tablet was all OK until son let battery drain (feel asleep watching YouTube).
Tried charging multiple ways (Samsung original charger) no good.
Wife has same tablet, fully charged the battery on hers then swopped batteries.
Sure enough faulty battery completly flat, recharged and now using her tablet OK to post this query.
My tablet now has proven charged battery in it, but still will not power up ( no signs of life at all).
Any ideas what else I could try please?
This is not your models forum .
Bad power button, isn't allowing it to start. The switch is open and can't close alas broken
dontbeweakvato said:
Bad power button, isn't allowing it to start. The switch is open and can't close alas broken
Click to expand...
Click to collapse
Thanks. I'll try shorting out the button (internally) if I can.
Cheers,
John