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.
Click to expand...
Click to collapse
* 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!
Click to expand...
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
Sent from my PC36100 using XDA Premium App

bootny said:
They do need conditioning
Sent from my PC36100 using XDA Premium App
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
Sent from my PC36100 using XDA Premium App

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
Sent from my PC36100 using XDA Premium App
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
Sent from my PC36100 using XDA App

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
Sent from my PC36100 using XDA App
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
Sent from my PC36100 using XDA Premium App

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!
Sent from my PC36100 using XDA Premium App

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
Sent from my SPH-D700 using xda premium

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
Sent from my SPH-D700 using xda premium
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.
Sent from my SPH-D700 using Tapatalk

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!
Sent from my SPH-D700 using XDA App

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
Sent from my SPH-D700 using xda premium

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).
Sent from my SPH-D700 using xda premium

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... ;-)
Sent from my SPH-D700 using xda premium

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).
Sent from my SPH-D700 using xda premium
Click to expand...
Click to collapse
You have the strangest analogies yet I fully understand them haha
Sent from my SPH-D700 using XDA App

Overcharge?

There is so much mis-information and conflicting information out there regarding if it is actually harmful to your battery to overcharge it. I like many people usually plug my phone in before and let it charge overnight. (All these customs roms with horrible battery life I always need the insurance that my alarm will go off). But the question is is that harmful to your battery when done frequently?
Sent from my SPH-D710 using xda premium

cknuth said:
There is so much mis-information and conflicting information out there regarding if it is actually harmful to your battery to overcharge it. I like many people usually plug my phone in before and let it charge overnight. (All these customs roms with horrible battery life I always need the insurance that my alarm will go off). But the question is is that harmful to your battery when done frequently?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Our batteries have a chip in them to prevent overcharge or overheat. If you have a faulty or old/drained battery that might be different - but a fresh OEM battery should work just fine being charged for hours and hours.

cknuth said:
There is so much mis-information and conflicting information out there regarding if it is actually harmful to your battery to overcharge it. I like many people usually plug my phone in before and let it charge overnight. (All these customs roms with horrible battery life I always need the insurance that my alarm will go off). But the question is is that harmful to your battery when done frequently?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
If you have a good OEM battery then over charging is not a factor.. Better to charge them up from several partial charges then letting it go dead or constant "deep charges".. Or keeping it on the charger as needed

So best practice for extending the life of a battery is to charge it whenever I have access to a charger. (Again, CM9 has abysmal life) and it also doesn't hurt it to plug it in before bed as I do now? The stupid glitchiness whenever you reboot a Sammy phone is annoying too....but anyway thanks for the info
Sent from my SPH-D710 using xda premium

cknuth said:
So best practice for extending the life of a battery is to charge it whenever I have access to a charger. (Again, CM9 has abysmal life) and it also doesn't hurt it to plug it in before bed as I do now? The stupid glitchiness whenever you reboot a Sammy phone is annoying too....but anyway thanks for the info
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
That is correct.. But if you have a bad battery that won't help.. You can check by seeing if the battery has bulging sides or that if you can spin it around on a table.. If it does you have a bad battery.., You can find some excellent deals over on Amazon for a new battery if needed.. And nope it doesn't hurt to plug it in before bed over night
I posted a link below this statement of an article on this sight about maintaining a good battery.. Might find it helpful when you get some time
http://forum.xda-developers.com/showthread.php?t=871051

I was under the impression that overcharging was not an issue these days.

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?
Sent from my GT-N7105 using xda app-developers app

Doesn't matter anymore...

I usually do it. Zedomax recommends it, and it doesn't hurt anything to do so.
Sent from my SAMSUNG-SGH-I747 using xda premium

Is it alright I do it with the power on?
Sent from my GT-N7105 using xda app-developers app

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?
Sent from my GT-N7105 using xda app-developers app

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?
Sent from my GT-N7105 using xda app-developers app
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.
Sent from my GT-I9100 using xda app-developers app

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...
Sent from my SGH-T999V using xda app-developers app

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.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Sent from my SAMSUNG-SGH-I747 using xda premium

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
Sent from my SAMSUNG-SGH-I747 using xda premium
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.
Sent from my SGH-I747M using xda app-developers app