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...
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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..
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Thank you!
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When you guys unplug your gnex from the wall... (gsm)

Does the battery go to 99% for you guys instantly? seems like mine does, as soon as i unplug it goes to 99%, just wondering if its normal or just my phone, because on my galaxy s II i would get like 30 minutes of no drain, like it would stay at 100 for a while, while this phone is like as soon as i unplug the battery is already down to 99.

unleashed12 said:
Does the battery go to 99% for you guys instantly? seems like mine does, as soon as i unplug it goes to 99%, just wondering if its normal or just my phone, because on my galaxy s II i would get like 30 minutes of no drain, like it would stay at 100 for a while, while this phone is like as soon as i unplug the battery is already down to 99.
Click to expand...
Click to collapse
Calibrate it
Mine stays on 100% for a good half an hour or so too

what is the easiest way to calibrate it? any links.. my GNEX will go 99% instantly too but overall battery drain is awesome

my battery life is TERRIBLE on this thing, it drains like crazy.. i want to calibrate it super badly but im not rooted, so i cant delete batt stats.bin , i even let it drain last night completely charged it again while it was off..still same terrible battery life. its a shame because i really really love this phone.

hiohokaybye said:
Calibrate it
Mine stays on 100% for a good half an hour or so too
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Click to collapse
I'm sorry but that sounds like badly calibrated battery. Lithium-ion Batteries are -never- 100% except for a very brief moment.
It is natural that your phone displays 97%-99% when unplugged (or even when still plugged in). Batteries protect themselves like this, because these batteries cannot be charged while they are full, they will stop charging the very moment you hit 100%.

Generally you don't want your battery to be above 90% for a extended amount of time, that much voltage/capacity speeds up the degradation of the cells. So actually you should be happy, because your battery will have a longer life.
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Smokeey said:
Generally you don't want your battery to be above 90% for a extended amount of time, that much voltage/capacity speeds up the degradation of the cells. So actually you should be happy, because your battery will have a longer life.
Sent from my Galaxy Nexus using XDA App
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Where are you getting this from? Doesn't make sense.

toonlight said:
Where are you getting this from? Doesn't make sense.
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Click to collapse
He's technically correct. LiIon batteries are happiest around 60-70% charge level. However given that your actively using a cell phone battery and your not storing it at high charge its OK.
If you really want to learn more about Lithium tech I can link you to a forum where people are VERY serious about this stuff and use them for high powered lights.

This is a known design "feature."
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
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Is this normal battery life for the first day of having the nexus?

I just got my nexus today and was wondering if this was good battery life for the first days use and when it will start getting better?
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This is the screenshot.
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Just about. I usually get 7hrs.
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Thats a drastic drop! Id say about normal as well. Did you have a lot of apps that were re downloading from the time you first activated it. After a few days to a week when your done looking at your phone every 5 secs you'll start to see battery improvement haha.

Tonight will be my 3rd time charging it. WIll it get a lot better tomorrow?

ProTip: Put the phone down every once in a while and enjoy life.

That's normal if ur 4g on
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It can take 4-5 charge cycles for the battery to really get worked in.
Also, check out the juice defender plus app. Doubled my battery life.
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Lithium Ion cells do not get better in any way after a few charges.
In fact the capacity goes down a wee tiny little bit with each and every charge, so your first charge was the "best" one.
Stop playing around with the thing for 5 hours non stop and you will get decent runtime.

Best thing to do with a new device is to charge it up fully as soon as you can. Then run it down until you get the low battery warning. Then charge it back up.
Battery life will likely be pretty poor for the first week or so, then it will normalize.

Deep discharging (to 0%) is about the worst thing you can do to a LiIon battery, because it "hurts" it much more than several shallow discharges.
Also, like I said before, battery capacity won't in any way rise or "normalize" over the first week.
Battery life is poor the first days because you use your shiny new device all the time (i.e. more than later). It's like that for all of us.

My battery life sucked the first few days, It got better though. It really only seems to suck it down if it is hunting for a signal constantly.
Sent from my Galaxy Nexus using XDA App

If you are using your phone a laptop replacement and are surfing the web constantly, expect it to die like a laptop.
Sent from my Galaxy Nexus Revolution

You also need to try this manual battery calibration:
http://myhtcdesire.com/tutorials/how-to-improve-your-battery-life-calibration-tutorial
After I did this, saw the battery reading 99% and 98% more often rather than straight to 96% after charged.
Originally, it was suggested by HTC tech support. I did that once every six months or so ... And my battery level is now improved. Screenshots will follow in the next post.

Not bad?
Sync is off btw. And this includes using Maps 2%.
At least with my usage pattern, I am more or less satisfied.
I wish Google fixes the high Android OS Keep awake time!
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cvbcbcmv said:
You need to remember the only thing relating to battery life is not just the battery, it's software as well, hence calibration. After about a week or so your phone gets a "feel" for your battery and gets more battery stats, so it's more accurate with it's readings. That is a proven fact, you need to think about all things.
Click to expand...
Click to collapse
It is quite easy to gauge a Lithium Ion battery. 4.20 V = full. 3.60 V = empty. Your phone can read the battery precise to 0.001 V. The curve isn't linear, but it's well known what voltage relates to the exact capacity left in the battery.
There's really no room to "feel" anything there, just simple math.

Smokeey said:
ProTip: Put the phone down every once in a while and enjoy life.
Click to expand...
Click to collapse
+1
I consistently get 15-18 hours of use out of mine with the extended battery.
But to the OP, if your screen is taking up 60% of your battery, it's always on, your battery is gonna die, it happens. Your battery doesn't get "better" with time. It seems that way because you aren't glued to the device 24/7.

Mine was god awful when I first got it but after a week or so it got much, much better.
I have the GSM version though.

60% screen time gawt damn! Did you talk to anyone that day?

falconeight said:
60% screen time gawt damn! Did you talk to anyone that day?
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Click to collapse
Google need to run classes on how to read the battery consumption pages. 61% screen means that the screen used 61% of the total battery used, not that the screen was on 61% of the time.
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First 10% battery drain

I'm noticing on gummy and other roms I try that the first 10-12% drops fast then slows down to normal. No matter what kernel I try this seems to be the case. Anyone have any idea or maybe you could school me? Thanks community
I've wiped stats and tried to open and close camera, super aggravating!
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When your phone is on the charger, it will charge to 100%. After it hits 100%, it will remove itself from the charger and run on battery. This will go down to a certain percentage (maybe 95%, maybe 90%), at which point the phone will reattach itself to the charger and charge back up to 100%. The drop you are seeing is when you take the phone off the charger while it is in the midst of one of these cycles. I would assume it still shows 100% battery but drops down to what it's really at.

Thanks but my battery doesn't get consistent until around 90 and lower so I'm sure your rite but why does charge to 100%
On my nexus s it stoped at 95-96%?
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I have the same "issue" but I've just learned to live with it...

this makes perfect sense! i always wondered why it did that! thanks

oilfighter said:
I have the same "issue" but I've just learned to live with it...
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Obviously we all learn to live with it but isn't it nice to know that its an issue and not your phone alone, that's why I ask to see if my fellow community members are experiencing the same problem? I think it has something to do with the fast charge
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joshnichols189 said:
When your phone is on the charger, it will charge to 100%. After it hits 100%, it will remove itself from the charger and run on battery. This will go down to a certain percentage (maybe 95%, maybe 90%), at which point the phone will reattach itself to the charger and charge back up to 100%. The drop you are seeing is when you take the phone off the charger while it is in the midst of one of these cycles. I would assume it still shows 100% battery but drops down to what it's really at.
Click to expand...
Click to collapse
One way around it is to unplug it for a second and then plug it back in to top it off.

Or charge it while it is off
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mike216 said:
Obviously we all learn to live with it but isn't it nice to know that its an issue and not your phone alone, that's why I ask to see if my fellow community members are experiencing the same problem? I think it has something to do with the fast charge
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Click to expand...
Click to collapse
It's really not an issue, it's just how it works. It gets to 100% and instead of charging more and frying itself, it stops charging. When you take it off the charger at 100%, it's not really at 100%, it's somewhere in between 90 and 100. The reason it says 100 is that if you let it charge all night and it said 93% in the morning you'd have already called to Samsung to complain, as would have everyone else.

The HTC thunderbolt did this as well. To protect the battery, once it reaches 100%, it stops charging. Then once it hit 95% or somewhere in the 90s again I believe, it kicked back on. You have to bump charge. Though I believe once I started installing custom roms, the issue seemed to disappear. So maybe its in the code or something.
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Every phone does this.
xHausx said:
One way around it is to unplug it for a second and then plug it back in to top it off.
Click to expand...
Click to collapse
DON'T DO IT!!!!
Seriously, bump charging will destroy your battery health.

Every phone does it. It is to protect the battery's life.
Batteries suffer when they are 100% charged and when they are really low.
That's why when you get a brand new battery is it charged about 50% because it extends the battery's life while in the shelf.

When I disconnect in the mornings it's always 97 or 98%. who knows when it stops charging in the middle of the night. but from 98% to 75% it is really quick. maybe because during that time I'm on the train listening to music and browsing the internet at the same time.
With iphone 4, I always disconnected at 100% in the mornings and after the train ride the battery was around 88%.

fubaya said:
It's really not an issue, it's just how it works. It gets to 100% and instead of charging more and frying itself, it stops charging. When you take it off the charger at 100%, it's not really at 100%, it's somewhere in between 90 and 100. The reason it says 100 is that if you let it charge all night and it said 93% in the morning you'd have already called to Samsung to complain, as would have everyone else.
Click to expand...
Click to collapse
No I didn't calk Samsung and did you hear me complain? I simply asked a question and if you dont like what you read then ignore it and move on. Wake up on the wrong side of the bed. What's up with people hear?
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mike216 said:
No I didn't calk Samsung and did you hear me complain? I simply asked a question and if you dont like what you read then ignore it and move on. Wake up on the wrong side of the bed. What's up with people hear?
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Click to expand...
Click to collapse
He was just saying that if you put your phone on for a full night of charging and woke up to see it was at 93%, you'd probably assume something was wrong and call the manufacturer. Chill out, he's not insulting or mocking you...

I didn't leave it on all night but he was a little offensive by basically calling me a complainer by saying did I call samsung already
I just wanted to known if my problem was rom or kernel or maybe even hardware but coming to find out that my GN is just like that was a bit of relief. I've owned a galaxy s,nexus s but this was the first time I've seen a Google samsung battery charge behave like this. No biggie was just curious
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KWKSLVR said:
Every phone does this.
DON'T DO IT!!!!
Seriously, bump charging will destroy your battery health.
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Click to collapse
In the long run maybe a little, for how long most people keep their phones it won't matter though. This was actually something HTC recommended we do for the Evo 4G cause it was the exact same way.
I actually did have one of my batteries discharge too much to where it wouldn't come back, but all I had to do was take it in to Sprint and they gave me a new one for free.

mike216 said:
I didn't leave it on all night but he was a little offensive by basically calling me a complainer by saying did I call samsung already
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Click to collapse
I don't know how you got that from what I wrote. I was just saying that if you woke up and the battery said 95% after charging all night you'd think something was wrong with the phone, as would everyone else. The reason it says 100% is that the phone manufacturers don't want to explain that it's not a problem to a million callers a day.

xHausx said:
..
I actually did have one of my batteries discharge too much to where it wouldn't come back, but all I had to do was take it in to Sprint and they gave me a new one for free.
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Click to collapse
The same thing happened to my brother's G2.
Then I remembered, It can be brought back to life either with high voltage or high current. I plugged in to my Touchpad's charger (which is 1.3 amps I think), and the miracle happened. It returned from the dead.

KWKSLVR said:
Seriously, bump charging will destroy your battery health.
Click to expand...
Click to collapse
sstang2006 said:
Batteries suffer when they are 100% charged...
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Click to collapse
Not true.
The best thing for a Lithium Ion battery is to keep constantly charging it as much as possible. These are not the old nickle batteries of ~10 years ago. The internal circuitry inside your phone's charging system is what keeps the lithium cell in it's "happy range".
However, once a cell is outside of it's "happy range" one of two things will happen:
1) Thermal run-away; this is when an overcharged cell begins to generate it's own heat by consuming Lithium, creating more heat, consuming even more Lithium, creating even more heat, etc... When you hear of people's laptop batteries catching on fire in airplanes or where ever, it's usually because of thermal run-away.
2) Cell depletion; if a cell is discharged too low it looses it's ability to retain a charge. It's not a "Hmmm... my batter doesn't seem to hold a charge as long anymore" like the old nickle batteries, but it won't hold ANYTHING at this point.
In closing, there is nothing wrong with "bump charging" your Lithium battery. The charging circuitry has been HEAVILY scrutinized and tested for safety measures and will never overcharge your cell (assuming the HW is opreating correctly).

Got an extended battery...

...and its wicked (IMO..I've heard others not have good luck with them..)
Basically, I've gotten 22 hours of fairly heavy use.. web surfing, Facebook, gaming (order and chaos mostly) among other things....using auto-brightness.
Now that I have another battery...I'm going to unlock/root and get to work flashing like I did on my DX.
A question though.. If I use my extended battery exclusively, and keep my standard battery as backup... Will my standard slowly discharge over time not being plugged in? Idk much about batteries..
Thanks so much,
-Path
Sent from my Galaxy Nexus using Tapatalk

It will yes, expect it to loose approx 30% over a period of a year being idle. Nothing to worry about.

Oh okay. So popping it in once a month should keep it up then?
I just want to be sure I have one handy because I once got into a corner with my DX where I needed a full battery to .sbf and mine was half dead and wouldn't work...so I had to hunt a friend who also had a DX down to fix it lol. Just want to be sure I don't run into the same problem >.>
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PathologyX said:
Oh okay. So popping it in once a month should keep it up then?
I just want to be sure I have one handy because I once got into a corner with my DX where I needed a full battery to .sbf and mine was half dead and wouldn't work...so I had to hunt a friend who also had a DX down to fix it lol. Just want to be sure I don't run into the same problem >.>
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
It will lose very little capacity not being used. He meant it will lose charge just sitting there. Just don't let it sit empty. Or at full charge.
Sent from my Nexus in Texas.

You should be fine, lithium-ion batteries hold their charge pretty well. I've not actually tested them before, but try charging it to full and then booting up to see the charge in 28 days later, might be interesting to see.
I know my Nikon D7000 batteries hold their charge very well, I tend to leave one in the camera and discharge the one in the battery grip first and just use the battery for a month or so and swap them around. In the same sort of time, 28 days I can lose up to six percent this time of year, but I am going out everyday in temperatures as low as -12°C, so it's to be expected.

PathologyX said:
...and its wicked (IMO..I've heard others not have good luck with them..)
Basically, I've gotten 22 hours of fairly heavy use.. web surfing, Facebook, gaming (order and chaos mostly) among other things....using auto-brightness.
Now that I have another battery...I'm going to unlock/root and get to work flashing like I did on my DX.
A question though.. If I use my extended battery exclusively, and keep my standard battery as backup... Will my standard slowly discharge over time not being plugged in? Idk much about batteries..
Thanks so much,
-Path
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
For this Id like to know some additional information... what widgets you have running. Stock or ROM and what kernel. As well as settings like display, sync timing etc.

If you want to store your LiIon battery it's best for the battery to have ~40% charge. The battery will age the slowest this way.
Do not store it at 100% or 0%. Check every 6 months and recharge to ~40% if necessary.

Valynor said:
If you want to store your LiIon battery it's best for the battery to have ~40% charge. The battery will age the slowest this way.
Do not store it at 100% or 0%. Check every 6 months and recharge to ~40% if necessary.
Click to expand...
Click to collapse
This also reinforces what I've heard. Store these type of batteries around 1/2 charge never full never empty.