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.
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* 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!
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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
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bootny said:
They do need conditioning
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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
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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
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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
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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
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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
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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!
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[Q] Charging Overnight?

Does anyone know if charging this phone overnight will "mess up" the battery , because I use an alarm every morning and I need the phone to be on when I wake up. I checked at a lot of sites ( and of course xda too) but i couldn't find the final answer?

samsungepicgeek said:
Does anyone know if charging this phone overnight will "mess up" the battery , because I use an alarm every morning and I need the phone to be on when I wake up. I checked at a lot of sites ( and of course xda too) but i couldn't find the final answer?
Click to expand...
Click to collapse
No it will not. It has a charge script that stops when it reaches 100% then monitors the battery after that and will trickle charge when it drops a couple of percent.

Actually this is a process used to calibrate battery when you first buy one or is the first time you buy a phone. You drain it and charge it overnight. I do this too but not recently because airplane mode allows for no percentage drop..... I don't believe it is harmful but may prove to be over an extended period as are many things. Id say just turn the phone on airplane mode and it shouldn't drop but 1-2 if any percentage.
Sent From My Cyan Samurai

No it is not harmful. However any rechargeable battery wears over time. I have charged my phone overnight since the September 2010 without issue.

No it will not harm it is what I discovered
Here are some sources that say it will not damage it:
http://answers.yahoo.com/question/index?qid=20100408214147AAiiCis
http://news.tigerdirect.com/2008/02...ugged-in-all-the-time-will-harm-your-battery/
And some that say the regulator chip may be harmed:
http://answers.yahoo.com/question/index?qid=20100408214147AAiiCis
http://daily-grind.net/does-leaving-your-laptop-plugged-in-shorten-its-battery-life/
Honestly for me to say, its your choice...
I leave mine in, it's much more convienient...

A general charge overnight will not harm ur battery. But every now and then..u want to perform a charge cycle. Fully chargee it, and let it drain completely. U do this twice. It just basically resets the battery cells. Our phones use a lithium-ion battery plus..its the improved lith battery.
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androidmaster1 said:
A general charge overnight will not harm ur battery. But every now and then..u want to perform a charge cycle. Fully chargee it, and let it drain completely. U do this twice. It just basically resets the battery cells. Our phones use a lithium-ion battery plus..its the improved lith battery.
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Click to expand...
Click to collapse
NO. NO. NO. Uberpinguin, the one who posts cm7, hates battery calibration, and I'll preach his message for him. Cycling the battery is stupid, it wears life, and wiping battery stats is stupid. Each battery has a specific uuid (I think that's what it is) that tells batterystats.bin what battery it is, and then it THEN locates the info it needs. Not "oh hey, my phone is calibrated for someone elses battery".
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ugothakd said:
NO. NO. NO. Uberpinguin, the one who posts cm7, hates battery calibration, and I'll preach his message for him. Cycling the battery is stupid, it wears life, and wiping battery stats is stupid. Each battery has a specific uuid (I think that's what it is) that tells batterystats.bin what battery it is, and then it THEN locates the info it needs. Not "oh hey, my phone is calibrated for someone elses battery".
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Click to collapse
Explain ****ty battery life then when i don't calibrate it when i flash a rom.
When i flashed over to CM7 my phone was getting on average 10-14Hrs depending on usage if i was heavily using it it would be from 6-8Hrs.
After i calibrated it i went from 6-8 on heavy to 12-15 on Heavy and medium usage went from 10-14 to 18-20Hrs. And minimal use ending me up with 24+Hrs
So please explain? because i hate calibrating it but it works.

Ugo, have u ever hard tested a battery? My assumption is no. Are u aware that per manufacture and engineering specs, sometime u have to do calibration. Have u performed appropriate research? I will link 1000 sources that will stat, u should cycle battery once in awhile. Its like a pc..there is the hardware function and there is the software function. Are u an advanced mobile technician? Are u. A mobile engineer? I use to be a technician. Ur basing ur statment from someone else. Have u done this "yourself"?
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When i ve done calibration...and cycling, I increased batter life by 75%
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Battery drain always seems terrible for a short time after flashing a new rom. It does clear up.
Letting your battery drain completely is NOT good for your phone, though I'm unaware of what how it may affect the battery itself. But as I understand it, it is not necessary in any way for the battery itself- so it's useless and doing so will only help you corrupt the data on your phone.
I've been charging mine nightly since Nov 2010 and it's fine.
Those of you with serious battery drain - do yourself a favor and try staying on the same rom for more than 36 hours.
sent from my secret underground bunker

mjben said:
Battery drain always seems terrible for a short time after flashing a new rom. It does clear up.
Letting your battery drain completely is NOT good for your phone, though I'm unaware of what how it may affect the battery itself. But as I understand it, it is not necessary in any way for the battery itself- so it's useless and doing so will only help you corrupt the data on your phone.
I've been charging mine nightly since Nov 2010 and it's fine.
Those of you with serious battery drain - do yourself a favor and try staying on the same rom for more than 36 hours.
sent from my secret underground bunker
Click to expand...
Click to collapse
That is an EXT4/journaling thing and has nothing to do with your phone. MTD and RFS do not have this problem. At time of purchase the Techs and Samsung recommend this battery cycling and running the battery all the way down.
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androidmaster1 said:
Ugo, have u ever hard tested a battery? My assumption is no. Are u aware that per manufacture and engineering specs, sometime u have to do calibration. Have u performed appropriate research? I will link 1000 sources that will stat, u should cycle battery once in awhile. Its like a pc..there is the hardware function and there is the software function. Are u an advanced mobile technician? Are u. A mobile engineer? I use to be a technician. Ur basing ur statment from someone else. Have u done this "yourself"?
When i ve done calibration...and cycling, I increased batter life by 75%
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Click to collapse
Will you please post those 1000 sources? Along with a photo of your tech degree? Also 75% difference? The only thing that's going to give you nearly double your battery is a larger capacity battery.
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I wasn't aware that a tech degree ruled over experience. How long have u worked with mobiles on the tech side? U want some sources? Ok... gizmodo, lifehacker, phonescoop, rcr wireless, all manufactures, motorola systems engineering site, lg engineering site, wireless week, android police blogs. Buddy ill be here all day posting.
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U ever full repair a board, or inner cell reseted a battery? I have. Ever work with an ohms, voltage sensor machine? How about a resistor reader?
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I'm not going to go any further in this argument with u. I've made my point, and that's all I'm saying to u.
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Bad battery?

I charged my phone overnight and when I woke up the LED was blue but I didnt check the % because i was rushed. When I got to school, the % was 25. now it is going away fast... Really odd, will calibrating help or is it the battery?

U can try calibrating the battery. Try charging it with the phone off, and if u get the same results, than its the battery
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LORDFIRE00 said:
U can try calibrating the battery. Try charging it with the phone off, and if u get the same results, than its the battery
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Click to expand...
Click to collapse
What lord said. I was seeing an issue where the battery would drop 8 percent as soon as I took it off the charger. Then if I rebooted, the battery would drop significantly so it was never reporting the correct battery percentage. Calibrating didn't help.
Ending up going with the Epic 4G touch battery and it's been a lot better. They are going anywhere from 15-25 bucks shipped:
http://forum.xda-developers.com/showthread.php?t=1284946

If the battery is over 1 year gold's expects a 10 to15% reduction in its capacity. Normal with nickel cadiums.
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Simple Guidelines for Charging Lithium-based Batteries
A portable device should be turned off while charging. This allows the battery to reach the threshold voltage unhindered and reflects the correct saturation current responsible to terminate the charge. A parasitic load confuses the charger.
http://batteryuniversity.com
Charge at a moderate temperature. Do not charge below freezing.
Lithium-ion does not need to be fully charged; a partial charge is better.
Chargers use different methods for “ready” indication. The light signal may not always indicate a full charge.
Discontinue using charger and/or battery if the battery gets excessively warm.
Before prolonged storage, apply some charge to bring the pack to about half charge.
Over-discharged batteries can be “boosted” to life again. Discard pack if the voltage does not rise to a normal level within a minute while on boost.

Wow! You are like Mr. Battery or something!
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Hahaha...I couldn't remember all the info about the lithium ion cells (I read a lot about awhile back). So I decided to post some factual info about. That way it helps everyone and anyone
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I hope you are not using a generic battery. I have seen those things spontaneously short themselves. Whatever you do, don't take your battery apart and attempt to rebuild it yourself. Chances are, you don't know what you are doing. I have seen people attempt to fool around with batteries and get hurt.
Remember, lithium ion batteries are a lot like horses stomachs:
1. Empty them often.
2. Fill them often after emptying.
3. Never leave them alone with a full stomach. (Always leave them alone half full).
4. Use them every day in some way.
5. Never ride them hard outside of MacBeth Castle and then walk them for a mile so you don't get killed by Lady MacBeth's agents. (If you use them very hard for a long time, and then use them sparesely afterwards, don't expect them to be stable...and don't expect not to get murdered outside of your castle).
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Sounds like a phone charging issue. I've never seen this cuz my phone charges my battery in RARE circumstances like once a year. 4 batteries externally charged well worth the money... ;-)
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SadieNibblesworth said:
I hope you are not using a generic battery. I have seen those things spontaneously short themselves. Whatever you do, don't take your battery apart and attempt to rebuild it yourself. Chances are, you don't know what you are doing. I have seen people attempt to fool around with batteries and get hurt.
Remember, lithium ion batteries are a lot like horses stomachs:
1. Empty them often.
2. Fill them often after emptying.
3. Never leave them alone with a full stomach. (Always leave them alone half full).
4. Use them every day in some way.
5. Never ride them hard outside of MacBeth Castle and then walk them for a mile so you don't get killed by Lady MacBeth's agents. (If you use them very hard for a long time, and then use them sparesely afterwards, don't expect them to be stable...and don't expect not to get murdered outside of your castle).
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Click to expand...
Click to collapse
You have the strangest analogies yet I fully understand them haha
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First charge

Hey guys! Just gotten my note 2, and gonna drain the battery down soon, should I plug it in and charge for 8 hours straight from zero? Should this be done with the phone off? Or this doesn't matter anymore?
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Doesn't matter anymore...

I usually do it. Zedomax recommends it, and it doesn't hurt anything to do so.
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Is it alright I do it with the power on?
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This is not needed anymore.
if the battery takes to long to kill then simply its already calibrated
many people don't know how a none-calibrated battery acts and think "battery life is great but it will get better later!"
if anyone of you happened to have a nokia phone in year 2000ish and still have it around i recommend you to go get a replacement battery for it and see for your self
unless the new battery jumps from 100% down to like 80/70% in no time then take too long to drain from 10% or something like that (in short battery acting weird)
then its already calibrated which is the case in all new phones/batteries
TL;DR
unless the battery is acting weird and not taking too long to kill then you dont need to do that

Hell Guardian said:
This is not needed anymore.
if the battery takes to long to kill then simply its already calibrated
many people don't know how a none-calibrated battery acts and think "battery life is great but it will get better later!"
if anyone of you happened to have a nokia phone in year 2000ish and still have it around i recommend you to go get a replacement battery for it and see for your self
unless the new battery jumps from 100% down to like 80/70% in no time then take too long to drain from 10% or something like that (in short battery acting weird)
then its already calibrated which is the case in all new phones/batteries
TL;DR
unless the battery is acting weird and not taking too long to kill then you dont need to do that
Click to expand...
Click to collapse
Thanks a lot I got my retail set from a carrier, so glad to have joined the note 2 community coming from the s3 :X so I just charge it up to full as per normal yes?
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This charging a long time first usage is also an old thing from the old nicd and nimh batteries..
in fact li-po and li-ion wont even charge after they are done, overcharging them means they explode/burn or get damaged.
there are built in safety features to prevent that.
and pulling it down to 0% means nothing since modern nimh, li-po, li-ion batteries don't got the memory effect.
actually going down to 0% would only test if the low voltage cutoff works as it should or if you damage your battery.

no need for that!
Frostyeo said:
Hey guys! Just gotten my note 2, and gonna drain the battery down soon, should I plug it in and charge for 8 hours straight from zero? Should this be done with the phone off? Or this doesn't matter anymore?
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Click to expand...
Click to collapse
Batteries that comes with the latestmpgones these day do not need to be charged for 8 hours!
Just charge it till its full and continue to enjoy it!

You can preserve the life of you battery by not fully charging it and you can damage it by draining completely. I've no source for this information.
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Battery life Replenished!

I was on here trying to find a way to reset my battery's memory...and I found it! Its so easy. So during the day, drain your battery to 20%, and plug it in all night. When you wake up, take off the back, and take out the battery for 3-4 minutes. Then, put the battery in the phone and turn it on. As it's turning on, plug in the charger. Leave the charger in until the phone says "charged" or has the battery icon showing full. Unplug your charger, and say Hi to a factory battery.
AT&T Samsung Galaxy S III

2% in 17 minutes....this is phenomenal... at least for me.
AT&T Samsung Galaxy S III

It is just an overcharged battery...
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What do you mean?
AT&T Samsung Galaxy S III

my understanding is that the battery is never really charged to 100% (even if you see 100% charged in the software).
it is a way to prevent overcharging the battery (because on the long run, it is decreasing the battery life and performance)
So, what you are doing is that you found a way for overcharging the battery and the result is that the battery life for the first 100 to 98 will be very good, however it will go back to normal after this step.
Correct me If I'm wrong, but I'm pretty sure that I'm right

Nah, its completely better...
AT&T Samsung Galaxy S III

Lol....you'll have to show more proof than that, even if youre phone confirms what you said.
Matrix is right, I think this is in your head. Placebo effect as its known.
show us screen shots of batterry useage for a week with this technique, then a week with out.
Then others will have to try it out.
Hey if your smart enough (since again your NOT doing anything physically, trust me ) you could write a a little script and make it an app?
Also its been said the battery gauge is really kind of a pasifier for us.
Physicaly there is no way you are changing the state of the battery by just touching the contacts real fast.
UNLESS your batter contacts are totally fried/or oxidized and somehow the friction has cleaned them???
If any thing, you are resetting the battery statistics/calibration and that ( confirmed by google, and a few a manufacturers)
does nothing.
One thing about batteries; the harder you work them the shorter they live, this is why Samsung,htc even apple said the batteries don't fully charge 100%, because if they did the batteries wouldnt last half as long.
But hey keep working on it maybe you got something there! :good:
and just for yucks

Your phone never charges all the way to prevent over charging and help keep your battery healthy for a longer period of time. Some kernels allow you to change this hidden setting from 98% to 100%.
All you are doing is circumventing the system and potentially harming your battery. And unless you keep doing this for every charge cycle it will return to normal.
You may be experiencing a placebo effect because your battery stats have changed based on the over charge. The battery stats data is used to guage your battery life.. This is updated for every cycle and will eventually return to normal on its own.
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J2DAe said:
Good job man. Don't listen to these haters. All they do is complain and shoot everyone down when they have a good idea. So **** em
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Click to expand...
Click to collapse
We're not "complaining" we're simply correcting the statement. Its for the users own good. Don't be drama.
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