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Calibrate Battery thread - This is how you do it!

OP aal1

23rd December 2010, 09:32 AM   |  #1  
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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 itís 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.
Last edited by aal1; 23rd December 2010 at 07:53 PM. Reason: added third way, cleaned up and spellchecked
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23rd December 2010, 03:11 PM   |  #2  
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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
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23rd December 2010, 03:29 PM   |  #3  
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Quote:
Originally Posted by turtlenator694

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

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
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23rd December 2010, 04:55 PM   |  #4  
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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
23rd December 2010, 05:10 PM   |  #5  
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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.

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23rd December 2010, 05:43 PM   |  #6  
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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?
23rd December 2010, 06:09 PM   |  #7  
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Quote:
Originally Posted by XtaC318

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

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.
23rd December 2010, 07:12 PM   |  #8  
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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.
23rd December 2010, 08:25 PM   |  #9  
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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...
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23rd December 2010, 08:44 PM   |  #10  
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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

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