[Battery] Fixes and Tips

[kibble]

I noticed something today, and I don't know if it's been mentioned before (these battery threads seem to get REALLY long REALLY quick), but this morning, after having my phone charge overnight, I unplugged the charger and then plugged it back in, after which the red light came back on and charged for a few minutes. When it turned green again, I repeated the procedure and the red light came back on for several minutes. I think I did this a total of three or four times.

After the last time the light turned green, when I unplugged the charger and plugged it back in, the light instantly became green, no red at all. I repeated the procedure to make sure.

The first thing I did was play with the phone heavily for several minutes, played some 3D racing game, downloaded some stuff from market and other things. The battery bar didn't drop as quick as it did normally. Usually I've been getting a little bit over half a day per charge, but today I haven't had to plug it back in since about 9am, and as I type this it's almost 11pm and I'm barely getting the low battery warning. Well actually at one point I had it plugged into USB for a few minutes to transfer some stuff, but not enough to say it got a really good charge out of that.

So anyway, just thought I would share my little experiment with you guys.

I will try the same thing tomorrow morning and see how it goes.

 

[colnago]

I know I cannot get more than 4-5 hours of standby out of this thing....

I consider that an issue and need am looking for any solution at this point.

Are you in a low signal area when this is happening?

My Droid's battery, usually good for 24hrs normal use, drained in about 4hrs from full charge while at my mom's house. It's a weak signal area...her Verizon "flip" phone gets low bars and packet loss, along with my n900 on T-Mobile.

The Driod would flip from 0-1 bar, be warm to the touch, and unable to get 3G connection. The struggle to keep network connection could be a cause for the increased battery drain.

 

[Lev16]

Seeing some improvement after a week of mediocre 9-10 hour days. Cheated a little bit too though. So I read jayjay's post and gave it a try yesterday after my phone completely shut off after about 9 hours of medium usage all day. Airplane mode, plugged in, green light, turned off, went back to red, then about 20-30 min later, it was green again, powered it back up, and unplugged it.

My battery remained at 100% for the next 45 min or so with medium use (something unheard of for me, since it was dropping about 7% in the first 15 min usually). I remained above 90% for the rest of the evening (about 3 hours of light to no usage). I decided to leave my phone off the charger just to see what would happen over night.

Woke up this morning, and I'm at 75%. Up time: 11:10, Awake time: 5:47. 11h 9m since unplugged. Despite the fact that I just left it there last night, I thought it would've drained a bit more. I guess the phone just slept.

So this thread has definitely helped a bit. I'm not sure how the phone will get through the day with normal usage yet, but I would say this little tip probably added a few hours. I already ordered the 1500 mah TP2 battery just cuz I've been a little disappointed, but maybe this little technique will make me think twice.

Will keep ya'll posted. Thanks

 

[Amin Sabet]

Under normal circumstances I would agree with you but the fact remains that for both the Eris and the Incredible, if I perform this technique, I get 3 more hours of battery life per day. There is something in these phones that is preventing them from being charged to an *actual* 100%

Now for those of you that are having problems seeing results, try this:

Tonight when you put your phone on charge, do not turn it off, put it in airplane mode and put it to sleep -> tomorrow when you wake up, do NOT unplug it, but wake it up and power it down. Once powered off the LED will go red again. Wait till it is green, power it on and don't unplug it till it is up and running.

See what happens.

Have you tried just charging overnight with the phone off? Maybe the phone just gets a deeper charge off than it gets on .

 

[Lev16]

Tried this method today and I'm beyond impressed....

Currently @ 90%:
Up time: 8:31:10
Awake Time: 0:12:47

Been on standby all day... first time I could go all day and still be above 20%.

Lets hope the next OTA fixes the misleading full charge issue.

Anyone report it to hTc yet officially? Response?

Looks like you hardly used your phone in the span of 8 hours? If you have a decent signal and you're just using the standby, I don't think it should drain more than 10% anyways. I think this technique really applies more to people who are using their phones in a medium to heavy way.

 

[bjanow]

....
Lets hope the next OTA fixes the misleading full charge issue.
Anyone report it to hTc yet officially? Response?

It's not a fault of the software, HTC or the phone itself. It's the nature of batteries. It happens all the time with every phone. Just charge it extra as the OP has culled from 1 million other threads around here these days and be done with it.

 

[sillyrabbitt123]

Are you in a low signal area when this is happening?

My Droid's battery, usually good for 24hrs normal use, drained in about 4hrs from full charge while at my mom's house. It's a weak signal area...her Verizon "flip" phone gets low bars and packet loss, along with my n900 on T-Mobile.

The Driod would flip from 0-1 bar, be warm to the touch, and unable to get 3G connection. The struggle to keep network connection could be a cause for the increased battery drain.

its funny you say this. i was thinking this is my problem. where my phone is most of the might be a weak signal spot but.... my mot droid doesnt have the same problem so not sure

 

[bjanow]

Have you tried just charging overnight with the phone off? Maybe the phone just gets a deeper charge off than it gets on .

I tried that with an LG yesterday. It was off, charged overnight, then I unplugged it. Plugged it back in and it took about another 1/2 hour of charge while still off.

 

[Doc_Stew]

So wait - all I have to do is charge it, take it off the charger, turn it off, cycle airplane mode, charge it again, turn it on, and repeat 3-4 times? That's it?! Awesome!

Oh wait - I work for a living.

 

[CRPercodani]

Merged with [Battery] Fixes and Tips. Please refrain from making new threads and use the 3 [Battery] threads.

 

[Locoman]

This charging technique you guys are using sounds like a way to possibly over charge your battery to me. Your phone knows how much charge the battery needs and charges it until it gets to that point. It then remembers the charge and won't charge again right away. I think turning the phone off your essentially tricking it and it doesn't know it just charged. That extra 10 or 15 minutes is what it takes the phone to analyze the battery and realize that it's already charged before it stops charging again. I highly doubt you're really gaining anything and possibly over charging the battery. The battery may not allow over charging but if that's the case you're not gaining anything. Those minutes are just the phone realizing the battery is charged. You can put pretty much any kind of battery on a charger that was just charged to full and it will charge again for a few minutes before it realizes it's already full.

From what I understand is that cell phone batteries have an integrated microchip that prevents them from being overcharged and to lengthen battery life. At least the batteries that I have purchased have and I would think the original dinc battery would to.

 

[AaronBBrown]

Lithium Ion batteries still require a 2-5 cycle conditioning.

No, they don't.

The high-power lithium-ion

-Do not discharge lithium-ion too deeply. Instead, charge it frequently. Lithium-ion does not have memory problems like nickel-cadmium batteries. No deep discharges are needed for conditioning.

I don't know why this myth is still out there. The only thing the "conditioning" that people describe here does is bettery calibrate the gauge on the phone...but that does nothing for battery life.

 

[AaronBBrown]

I think all the bad battery experiences can be summed into a few categories

• Phones that sleep correctly
• Phones that don't sleep correctly

Those in the first category are probably overusing their phones because it is new and shiny. Also, there is possibly a calibration issue with the battery gauge. Both issues are probably resolving with time and that is probably why the number of complaints have gone down.

Those of us in the second category have a legitimate issue. The built-in calendar application prevents my phone from sleeping, plain and simple. If I kill the calendar application, my phone sleeps when it should and I can go all day with fairly heavy usage. If the calendar app is running, I lose about 10-15% battery per hour without touching it. I have a morning routine where I reboot, kill calendar, stop and start gmail sync, stop and start Exchange sync, then restart the calendar that seems to fix it for 24 hours. This is a *bug*, plain and simple, and I have written Verizon and HTC about it. Hopefully they will fix it in the very near future.

 

[JuniorNA]

i, for one, think those battery apps and widgets are what is causing seepage and drainage. Think about it, they are the only apps that are constantly running, constantly updating and taking up CPU% power. Every other app comes in every so often to sync,push email, push contacts, etc. But the battery meter, they run all day/night. I uninstalled all battery meters because when i looked my OS monitor, i saw the battery widget on active mode (not sleep or idle) ALL day, and i realized it might be causing more harm than good.

 

[JuniorNA]

I did this in the AM, and it did work. It did continue to charge after i shut the phone off, but really, do i want to do this every morning ? I don't have time to drop a nice comfortable deuce in the morning, i definitely don't have time to unplug/replug my phone so the battery tops off. I understand how and why it works, but i dont understand why it has to be done every time. I thought maybe you'd have to do it the first few times to calibrate, then one day, maybe 5 days later...you would shut it off, put it on charger, and the light would be green, meaning it's fully charged, will this project ever get to that point?

 

[Jeffruby]

I think all the bad battery experiences can be summed into a few categories

• Phones that sleep correctly
• Phones that don't sleep correctly

Those in the first category are probably overusing their phones because it is new and shiny. Also, there is possibly a calibration issue with the battery gauge. Both issues are probably resolving with time and that is probably why the number of complaints have gone down.

Those of us in the second category have a legitimate issue. The built-in calendar application prevents my phone from sleeping, plain and simple. If I kill the calendar application, my phone sleeps when it should and I can go all day with fairly heavy usage. If the calendar app is running, I lose about 10-15% battery per hour without touching it. I have a morning routine where I reboot, kill calendar, stop and start gmail sync, stop and start Exchange sync, then restart the calendar that seems to fix it for 24 hours. This is a *bug*, plain and simSple, and I have written Verizon and HTC about it. Hopefully they will fix it in the very near future.

Is it the calander widget or the calender app itself that is the problem?

 

[eyc]

Just wanted to add my anecdotal two-cents regarding the will-not-sleep issue.

I am using HTC's ActiveSync to connect to my Exchange server and encountered the non-sleep issue. Battery pulls and resets did nothing.

Go into Settings > Sound & Display > Screen Timeout.

You see how there is something called "15 minutes (Exchange ActiveSync Policy)"? Well, even though mine wasn't checked (in fact, the 30 seconds was checked), it was defaulting to 15 minutes, after I installed a certain app (ColorNote).

So, I just checked 15 SECONDS, closed out, and it was fine. Later, I changed it back to 30 seconds. It has never happened again.

Hopefully this helps with some people facing this issue.

 

[XxICEMAN720xX]

I currently get about 20+ hours on my DI with a full charge. I use my phone responsibly. With great power comes great responsibility, says spider man. The battery may be lacking (1300mAh) for the speed of the processor, but if you treat it nicely, ie task killer, and turn off GPS, you can milk quite much battery time. I watch you tube, surf the web, and watch movies all day on my DI, I sent 250 texts yesterday.

For those of you who plug your DI's in, charge them to full, reset, charge again- you are tricking your phones, its like writing bad checks, 1. the battery itself can be
damaged by overcharging, reducing its lifetime, 2. the software on the phone is assuming your DI has a 100% charge that took X (seconds) amount of time, by resetting it again and again you are only making the software think Xs+Xs+Xs and thus the software will tell you you have a longer charge but you really don't, honestly.

Yes, I know the batteries are designed to not have max charge. Software limits the amount of charge based on Amperage because overcharge can cause irreparable damage. Yes, I know, to some extent, charging and resetting charging and resetting can get a better charge for your phone, but its not as great as it sounds- the benefits of this do not out weigh the cost. Besides, unless you are trying not to overcharge- by being a certified electrician or have the tools to monitor voltage and amperage for the battery- I can honestly tell you its not a good idea. So please, please stop, because next you will be complaining about how it wont hold charge and the fact of the matter is, your irresponsibility is the cause of the battery "crisis".

For those of you who believe your battery is being "broken in"- well its not. After day one of the LI first charge it begins to deteriorate, slowly over time, as is the nature of all things, but surely until you have a 4 hour wonder like my iPhone and iPod. Granted, if you treat your battery right, Full charge, followed by nearly full discharge, followed by full charge, you will not only get more accurate software estimations of battery time to live TTL, you also extend your Lithium ion's battery longevity for the long haul.

Overcharging deteriorates your LI battery faster than average, that's why scientists and researchers developed software to manage battery charging in a safe, repeatable way to maximize battery life and longevity. Trust me, companies aren't just "winging" the battery thing here, its proven fact.

 

[bjanow]

For those of you who plug your DI's in, charge them to full, reset, charge again- you are tricking your phones, its like writing bad checks, 1. the battery itself can be
damaged by overcharging, reducing its lifetime, 2. the software on the phone is assuming your DI has a 100% charge ....

...Besides, unless you are trying not to overcharge- by being a certified electrician or have the tools to monitor voltage and amperage for the battery- I can honestly tell you its not a good idea....


...Overcharging deteriorates your LI battery faster than average, thatch why scientists and researchers developed software to manage battery charging in a safe, repeatable way to maximize battery life and longevity

Sorry, I must disagree with a few points here. You are not tricking the battery at all, you are just giving it a full charge. It's not an overcharge, whatever that is, and monitoring voltage and/or amperage is ludicrous on a little battery. I might agree that overcharging deteriorates a battery, but I don't even know how anyone would do that, certainly not on this forum.

That being said, this is why I think your statements are incorrect. I have an external charger because I have 2 batteries. When I charge the battery in the phone and then pull it and put it on the external charger, it takes about 15 to 20 minutes to go green. If I take a drained battery and put it on the external charger, it charges to full. There is no unplug .. plug routine that needs to be done. I can leave the battery out for a week and it maintains the full charge. (I tested that) So the reason that phones don't fully charge on the first attempt is the real question here, not that you are tricking the battery. If that were the case my external charger would exhibit the same behavior and it doesn't. I believe, and this is just my theory, that the phones don't fully charge because of perceived safety issues since the exploding battery incidents some years back. There must be a shut off of sorts that is reset once you unplug and plug it back in.

Anyway I continue to charge my second battery externally and swap it each day. I can't be monkeying around with unplug, plug every day. The external charger was inexpensive and the second battery I already had from my Eris.

 

[XxICEMAN720xX]

Sorry, I must disagree with a few points here. You are not tricking the battery at all, you are just giving it a full charge. It's not an overcharge, whatever that is, and monitoring voltage and/or amperage is ludicrous on a little battery. I might agree that overcharging deteriorates a battery, but I don't even know how anyone would do that, certainly not on this forum.

That being said, this is why I think your statements are incorrect. I have an external charger because I have 2 batteries. When I charge the battery in the phone and then pull it and put it on the external charger, it takes about 15 to 20 minutes to go green. If I take a drained battery and put it on the external charger, it charges to full. There is no unplug .. plug routine that needs to be done. I can leave the battery out for a week and it maintains the full charge. (I tested that) So the reason that phones don't fully charge on the first attempt is the real question here, not that you are tricking the battery. If that were the case my external charger would exhibit the same behavior and it doesn't. I believe, and this is just my theory, that the phones don't fully charge because of perceived safety issues since the exploding battery incidents some years back. There must be a shut off of sorts that is reset once you unplug and plug it back in.

Anyway I continue to charge my second battery externally and swap it each day. I can't be monkeying around with unplug, plug every day. The external charger was inexpensive and the second battery I already had from my Eris.

Well then I guess I agree we disagree- I never said the battery was being tricked, that's my point the battery is a battery, no brain, the software can be tricked tho -and TBQH I was referring to Kibble (post 327: http://androidforums.com/htc-incredible/75220-battery-fixes-tips-7.html#post707015) Quote: "but this morning, after having my phone charge overnight, I unplugged the charger and then plugged it back in, after which the red light came back on and charged for a few minutes. When it turned green again, I repeated the procedure and the red light came back on for several minutes. I think I did this a total of three or four times. "

The battery does not tell the phone- I am at 100% or I am at 35.5% etc.. Also there is no "microchip" embedded in the battery, its 2 wires, pos and neg attached to the anode and cathode with the hub (piece that physically connects to phone).

The software on the phone measures the voltage and the amperage, during charge it records the time in a "spreadsheet". At the end of what the software considers a "full" charge it stops charging (trickle). The data collected, like time of charge, and voltage amperage, are saved to a "spreadsheet" where a formula is created by fitting a trend-line to the data to estimate battery % and time to live TTL. This is like high school math and common sense here.

bjanow, I, like you, believe the only way for a true charge is by means of an external charger, more efficient too.

 

[kibble]

Something interesting from this morning and an update to my previous post. This morning when I unplugged the charger and plugged it back it, it turned red again, let it charge until it was green again. This time I only had to do it once! The light turned green immediately after the second time I repeated the process of unplugging/plugging back in.

 

[dibs ODDJOB]

I currently get about 20+ hours on my DI with a full charge. I use my phone responsibly. With great power comes great responsibility, says spider man. The battery may be lacking (1300mAh) for the speed of the processor, but if you treat it nicely, ie task killer, and turn off GPS, you can milk quite much battery time. I watch you tube, surf the web, and watch movies all day on my DI, I sent 250 texts yesterday.

1. Task killers are not needed for Android, sometimes do more damage.
2. GPS will drain battery faster, but only if an app is actually using it, ie. opening GMaps or using Navigation. If you aren't doing these things, turning it off has no advantage. But I do use these things all the time, so turning it off is not an option for myself or many others.
3. And Spider Man didn't say that, his Uncle Ben did, although it's first appearance in Amazing Fantasy #15 was actually just a caption, said by no one.

 

[Lev16]

I currently get about 20+ hours on my DI with a full charge. I use my phone responsibly. With great power comes great responsibility, says spider man. The battery may be lacking (1300mAh) for the speed of the processor, but if you treat it nicely, ie task killer, and turn off GPS, you can milk quite much battery time. I watch you tube, surf the web, and watch movies all day on my DI, I sent 250 texts yesterday.

For those of you who plug your DI's in, charge them to full, reset, charge again- you are tricking your phones, its like writing bad checks, 1. the battery itself can be
damaged by overcharging, reducing its lifetime, 2. the software on the phone is assuming your DI has a 100% charge that took X (seconds) amount of time, by resetting it again and again you are only making the software think Xs+Xs+Xs and thus the software will tell you you have a longer charge but you really don't, honestly.

Yes, I know the batteries are designed to not have max charge. Software limits the amount of charge based on Amperage because overcharge can cause irreparable damage. Yes, I know, to some extent, charging and resetting charging and resetting can get a better charge for your phone, but its not as great as it sounds- the benefits of this do not out weigh the cost. Besides, unless you are trying not to overcharge- by being a certified electrician or have the tools to monitor voltage and amperage for the battery- I can honestly tell you its not a good idea. So please, please stop, because next you will be complaining about how it wont hold charge and the fact of the matter is, your irresponsibility is the cause of the battery "crisis".

For those of you who believe your battery is being "broken in"- well its not. After day one of the LI first charge it begins to deteriorate, slowly over time, as is the nature of all things, but surely until you have a 4 hour wonder like my iPhone and iPod. Granted, if you treat your battery right, Full charge, followed by nearly full discharge, followed by full charge, you will not only get more accurate software estimations of battery time to live TTL, you also extend your Lithium ion's battery longevity for the long haul.

Overcharging deteriorates your LI battery faster than average, that's why scientists and researchers developed software to manage battery charging in a safe, repeatable way to maximize battery life and longevity. Trust me, companies aren't just "winging" the battery thing here, its proven fact.

I really think posts like these are ridiculous and unhelpful. This has been an awesome thread with a lot of people sharing experience and suggestions on how to improve battery life. You come in here and start preaching about scientists and researchers, and frankly it's annoying.

You get 20+ hours on a charge. Great. I don't.

I've been averaging about 9-10 hours per charge on my phone, and I'm interested in improving it. That's why I read this thread. For the first time I've had the phone, I'm currently running at 44% battery charge after about 15 hrs. That's due to following some of the suggestions in this thread.

Please don't crap this thing up with your "scientific" statements.

 

[XxICEMAN720xX]

1. Task killers are not needed for Android, sometimes do more damage.
2. GPS will drain battery faster, but only if an app is actually using it, ie. opening GMaps or using Navigation. If you aren't doing these things, turning it off has no advantage. But I do use these things all the time, so turning it off is not an option for myself or many others.
3. And Spider Man didn't say that, his Uncle Ben did, although it's first appearance in Amazing Fantasy #15 was actually just a caption, said by no one.

Hmm, well being a first time Android user, (loving it btw), I am trying to learn the do's and don'ts of 2.1 so, I agree. I guess my feelings of doubt are cured with task manager lets me kill all the non-essential fun apps I have installed... I'd like to learn more about how this does more damage. I'm not being sarcastic, I honestly care to learn, please I think you are on to something.

I could have sworn Peter repeats the phrase as he is laying his best friends dad down to die, and several other times through his trilogy... glad to meet a Marvell fan, *shakes hand*

Something I found, Research (from How to prolong lithium-based batteries) Just gonna post the relevant facts (copied) and adding notes in red

[FONT=Verdana, Arial, Helvetica, sans-serif]Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as "digital memory". Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate.[/FONT]

[FONT=Verdana, Arial, Helvetica, sans-serif]Figure 3: Longevity of lithium-ion as a function of charge and discharge rates.

A moderate charge and discharge puts less stress on the battery, resulting in a longer cycle life.

[/FONT]

[FONT=Verdana, Arial, Helvetica, sans-serif]Figure 2: Effects on cycle life at different float charge levels (Choi et al., 2002)
Higher charge voltages boost capacity but lower cycle life. So 1300mAh will outlast a 1700mAh in terms of longevity.
[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]The speed by which lithium-ion ages is governed by temperature and state-of-charge. Figure 1 illustrates the capacity loss as a function of these two parameters.[/FONT]

[FONT=Verdana, Arial, Helvetica, sans-serif]Figure 1: Permanent capacity loss of lithium-ion as a function of temperature and charge level.
High charge levels and elevated temperatures hasten permanent capacity loss. Improvements in chemistry have increased the storage performance of lithium-ion batteries. If the phone detects too much heat during a charge, it will stop, and commence trickle.

[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]Longevity of high-power lithium-ion
Generally speaking, batteries live longer if treated in a gentle manner. High charge voltages, excessive charge rate and extreme load conditions will have a negative effect and shorten the battery life. This also applies to high current rate lithium-ion batteries.

[/FONT] [FONT=Verdana, Arial, Helvetica, sans-serif]Simple Guidelines
[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns. I was wrong about full discharge, full charge... good thing I looked it up.

Batteries with fuel gauge should be calibrated by applying a deliberate full discharge once every 30 charges. Running the pack down in the equipment does this. If ignored, the fuel gauge will become increasingly less accurate and in some cases cut off the device prematurely.

Keep the lithium-ion battery cool. Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.


Avoid purchasing spare lithium-ion batteries for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.

If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the battery. For best results, store the battery at 40% state-of-charge.

[/FONT]

I really think posts like these are ridiculous and unhelpful. This has been an awesome thread with a lot of people sharing experience and suggestions on how to improve battery life. You come in here and start preaching about scientists and researchers, and frankly it's annoying.

You get 20+ hours on a charge. Great. I don't.

I've been averaging about 9-10 hours per charge on my phone, and I'm interested in improving it. That's why I read this thread. For the first time I've had the phone, I'm currently running at 44% battery charge after about 15 hrs. That's due to following some of the suggestions in this thread.

Please don't crap this thing up with your "scientific" statements.

Sorry, the facts must be hard to read for those that don't want the facts. The fact of the matter is I came here to the forum and thread to learn something about my phone and all I read was a bunch of children complaining about how their high performance phone was not working well with their long-distance smaller batteries. I'm not trying to be an ass, I'm trying to be a gentleman and help.

 

[zemerick]

Tried this method today and I'm beyond impressed....

Currently @ 90%:
Up time: 8:31:10
Awake Time: 0:12:47

Been on standby all day... first time I could go all day and still be above 20%.

Lets hope the next OTA fixes the misleading full charge issue.

Anyone report it to hTc yet officially? Response?

This isn't an issue that can be fixed by the OTA.

This is the same thing as charging on USB while your phone is on. There just isn't enough juice to run the phone and charge it. Somewhere around 70-90 percent it switches from the normal full/fast charge to where it maintains a constant voltage and lowers the current over time. Eventually, In the 92-100 percent area usually...but this depends on how much battery your phone is trying to use at that time, none of the current makes it to the battery ( because it is powering the phone. ) and so it registers as a full charge, because that is the indicator that a battery is fully charged ( near 0 current going into the battery. )

So, there is no bug, and thus no eventual fix for it. If you want that last few percent, you have to charge it while the phone is off. You do not need to charge it first while on ( infact it'll charge slightly faster overall if it's off from the start. ) and you definately do not need to unplug/turn on/of/wait/replug it in...you're just recharging that time you waited.

Once the light turns green while the phone is off, you are full. Lemme know if that didn't make sense and I'll try to re-explain later when I'm more awake