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As you all know, the Evo battery charging mechanism is very quirky. If you are using the stock battery, the mechanism is not THAT bad once you understand how it works. If, like me, you are using the 3500 battery, charging the battery in the Evo is pretty much futile. Reason being, for some reason the Evo still thinks it is charging the stock battery despite the fact that you have a battery that is 2.5 the capacity in it. What this means is, the fully charged green light comes on at about the 65% level and you ultimately have to play a guessing game as to when the battery is actually charged. This is also after calibrating and wiping stats and doing whatever dumb HTC/sprint charging "trick" out there.
I am pleading here for someone to create an app that measures the true capacity and charge level of the battery so that we can all, especially extended battery users, know when the battery is actually fully charged. I am positive that there are donations in the project as this app will benefit all Evo users.
Please help and thanks in advance.
+1
I've been looking at the 3500mAh batteries as well, would love to get one, but i flat refuse to pry open my Evo everytime I want a FULL charge (having to resort to wall charging)
I'm not an expert in electrical engineering at all but I'm going to make an educated guess that the charging circuitry is independant of anything that the OS itself can control. Even with the phone 100% off it still has to obey the "rules" of charging that HTC setup. (i.e. charging to 100% then running off battery till it hits 90%) So I don't see how there can be an easy workaround for extended battery users if they want a true 100% charge.
I'd love a bit more juice myself, but like I said the only time I want to have to open up the back is if im upgrading my mSD card. If and until someone can come up with a solution, hell yeah! Until then I will just play with juice defender and hone my battery saving ability via software
I know the Battery Time app you can put in how big your battery is. Just select other when choosing your phone.
Sent from my PC36100 using XDA App
in for progress on this.
so tell me even though the phone thinks the battery is charged, does it stop charging it too?
If I remember correctly that may have to be done in the ROM/kernel, there is most likely a charging timer somewhere in there that stops it for safety reasons.
When changing the timer remember that the batteries are actually closer to 2800mAh than 3500, you don't want to overcharge it.
http://batteryboss.org/
Jsimon9633 said:
in for progress on this.
so tell me even though the phone thinks the battery is charged, does it stop charging it too?
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Click to collapse
No it continues to charge which is even more nonsensical and adds to the frustrating guessing game. Seidio recommends that you keep the phone on the charger for 2-3 hours passed the time that the light turns green. Again, more guess work.
xHausx said:
If I remember correctly that may have to be done in the ROM/kernel, there is most likely a charging timer somewhere in there that stops it for safety reasons.
When changing the timer remember that the batteries are actually closer to 2800mAh than 3500, you don't want to overcharge it.
http://batteryboss.org/
Click to expand...
Click to collapse
I think you are referring to wiping battery stats. I have tried this on several Roms and kernels to no avail. Also, if you aren't rooted, how would you go about wiping stats? An app would help a lot of people out.
Also after doing some more research and testing, any app that provides battery level that I have used including OS monitor, spare parts, etc. will basically spit out what the OS is telling it and not measure the true level. Unfortunatley, the OS is stuck on stupid and we are back to the original issue.
MSmith1 said:
I think you are referring to wiping battery stats. I have tried this on several Roms and kernels to no avail. Also, if you aren't rooted, how would you go about wiping stats? An app would help a lot of people out.
Also after doing some more research and testing, any app that provides battery level that I have used including OS monitor, spare parts, etc. will basically spit out what the OS is telling it and not measure the true level. Unfortunatley, the OS is stuck on stupid and we are back to the original issue.
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Click to collapse
I don't believe it is possible for an app to do what you are wanting, the charging process is controlled by the operating system itself and is built into the kernel.
There are two main steps to charging a li-ion and the first one finishes when the battery is around 70% full. So either something is causing the phone not to start the second part of the process, it is just timing out thinking that battery should have been by that time, or, since the batteries have circuitry inside of them, it could be the battery itself that is doing it. Have you tried charging your phone through your USB port? It takes longer but the battery may not like how much power the wall charger pushes through it.
Edit: I think I misread your OP, does your phone stop charging when it says it's full or does it keep charging?
xHausx said:
I don't believe it is possible for an app to do what you are wanting, the charging process is controlled by the operating system itself and is built into the kernel.
There are two main steps to charging a li-ion and the first one finishes when the battery is around 70% full. So either something is causing the phone not to start the second part of the process, it is just timing out thinking that battery should have been by that time, or, since the batteries have circuitry inside of them, it could be the battery itself that is doing it. Have you tried charging your phone through your USB port? It takes longer but the battery may not like how much power the wall charger pushes through it.
Edit: I think I misread your OP, does your phone stop charging when it says it's full or does it keep charging?
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Click to collapse
The phone continues to charge. Based on what you are saying and my own findings, it seems the phone is reporting that initial charge at 70% as 100% when using the 3500 battery.
I am in the midst of testing some things right now related to all of this and will report back.
MSmith1 said:
The phone continues to charge. Based on what you are saying and my own findings, it seems the phone is reporting that initial charge at 70% as 100% when using the 3500 battery.
I am in the midst of testing some things right now related to all of this and will report back.
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Click to collapse
Thanks keep us up to date. I bought this battery too so very interested in any possible solution you find.
Basically the os says its 100% when in reality its not even close, more like 65% right?
Jsimon9633 said:
Thanks keep us up to date. I bought this battery too so very interested in any possible solution you find.
Basically the os says its 100% when in reality its not even close, more like 65% right?
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Click to collapse
Yes. 10char.
how does the phone read the charge or does it?
maybe a glitch in regulating the flow?
any software determine could do this?
mine charges a good 8-10 hrs a night
never had a phone that needed more
anyone had to buy a standard battery replacement and get better battery?
software or hardware?
Jsimon9633 said:
Thanks keep us up to date. I bought this battery too so very interested in any possible solution you find.
Basically the os says its 100% when in reality its not even close, more like 65% right?
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Click to collapse
Looks like I failed again. This issue really needs attention from someone well versed with how the Evo charges the battery and how to tweak the reporting deep in the android system. Wiping battery stats in recovery does not solve this issue. We need a SetBat!
I got curious so I looked at the evo's source and found that it stops charging when it thinks the battery is full and doesn't start again until it drops down to 80%. Although it should start charging again if you unplug it and then plug it back in. To fix it you will need someone to make drivers for your battery and incorporate it into a ROM.
Sorry I can't help more but compiling ROMs is still a little bit over my head right now.
xHausx said:
I got curious so I looked at the evo's source and found that it stops charging when it thinks the battery is full and doesn't start again until it drops down to 80%. Although it should start charging again if you unplug it and then plug it back in. To fix it you will need someone to make drivers for your battery and incorporate it into a ROM.
Sorry I can't help more but compiling ROMs is still a little bit over my head right now.
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Click to collapse
Very interesting. The problem here is, the Evo stops charging when it thinks the stock battery is at 100 even though you have an extended battery in it.
I guess we would need a talented dev to compile a fix. Hoping that this thread can bring some attention to that. Looks like we have progress already!
Here are my findings from the monitoring I was doing earlier. It's a lazy Saturday for me so I actually had the time to watch the battery charge. For background info, I am using CM6RC2 and Snap 7.01 with the Seidio 3500 battery.
I let my battery deplete completely last night and woke up to charge it. Knowing full well that the Evo does not charge the battery correctly, I did some research into how I could properly monitor the charge on my own. What we are basically looking to do is to charge the battery to or close to 4.2v. You can monitor this yourself using any battery monitoring program. I was using spare parts.
What I saw was, the battery would charge to what the Evo thought was 100 or close to 100 for the stock 1500 battery, the green light came on and the reporting stats of charge/voltage stopped there. The phone was reporting a constant charge of 100 and the voltage froze at 3.9v despite the fact that the battery was actually charged to around 60-65%. These numbers froze there for a long period of time. The 100/green light never went away and the freeze in voltage reporting lasted about 1+ hours. The freeze at 3.9v was basically the OS reporting the 3.9v in error because it still was thinking that the stock battery was in the phone. The actual battery charge level was neither 100 nor 3.9 volts. Like I said, the voltage stayed at 3.9 for a while, lets say an hour+, and then it started charging up again to 4.2. I saw all of this happen in spare parts. The highest I saw the voltage get was 4207. It took around 5 hours to get to this point. Once it was close enough to 4.2, I rebooted into recovery and wiped my battery stats using Clockwork. On reboot, the battery was actually around 95%. Now I could have plugged the phone back in and repeated they process above but, as this point I basically gave up knowing that I couldn't really go through this type of process ever again because I never have time to sit there and watch a battery charge.
So back to point of this post, we need someone to find a way to have the Evo report true battery stats for extended batteries and not continually have the phone think that it is charging the stock battery. I don't know if it can be done in an app, in a rom, or in a kernel but, however we can get this done, it would be more than amazing.
I have never had a problem with my 3500 Seidio Battery in terms of charging.
I have never had less than 90% charge when I leave for work. But as it has been pointed out multiple times, this phone charges till 100% and then works off the battery until it hits 90%. In essence, this phone will never be charged to 100% unless you do it while turned off or quite possibly with the battery out of the phone.
Next time you think you don't have a full charge, take it off the charger, turn it off and then back on. Then stick it back on the charger, you will see that the charge is down to say.... 93% then it should start charging again. But too be honest, on a 3500mAh Battery, I really don't see the need. If you really need 100%, the best way to achieve this is with the phone turned off.
there are people in evo forums across the net that would donate en masse for this once word spreads. if it needs to be unique to each battery, the four most used are stock, 1750, 3000 chinese (what I have), and 3500 seidio. I would definitely donate for a true fix
Brutal-Force said:
I have never had a problem with my 3500 Seidio Battery in terms of charging.
I have never had less than 90% charge when I leave for work. But as it has been pointed out multiple times, this phone charges till 100% and then works off the battery until it hits 90%. In essence, this phone will never be charged to 100% unless you do it while turned off or quite possibly with the battery out of the phone.
Next time you think you don't have a full charge, take it off the charger, turn it off and then back on. Then stick it back on the charger, you will see that the charge is down to say.... 93% then it should start charging again. But too be honest, on a 3500mAh Battery, I really don't see the need. If you really need 100%, the best way to achieve this is with the phone turned off.
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Click to collapse
I assume that you keep your phone charging all night?
If so, this isn't really for people who do that. This is more for people looking to charger their phone to at or near 100 on the go, at work, etc.
Also, 10% on the extended battery is probably a difference of at least an hour more battery. I'd say even more. That's a lot of time to me personally.
cabbieBot said:
there are people in evo forums across the net that would donate en masse for this once word spreads. if it needs to be unique to each battery, the four most used are stock, 1750, 3000 chinese (what I have), and 3500 seidio. I would definitely donate for a true fix
Click to expand...
Click to collapse
Agreed. I'd rather donate money to a true fix than buy an external charger. I have funds to donate for this READY TO GO ASAP.
I think this is a firmware related issue.. I cannot count how many posts and different senarios (batteries, chargers, rom's) I have read, yet still this issue remains. The only things I have ran across that actually works is:
1. Charging the battery externally (wall charger, dock, or etc)
2. Charging phone while phone is turned off.
3. Bump charging (aka: battery conditioning, battery syncing, "plug/unplug method")
4. Clearing the battery stats
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
chillmeow said:
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
Click to expand...
Click to collapse
I spoke to RMK as well as others about this in IRC, doesn't look like anything we can do, deep in the HTC code I guess.
I have the same issue using SkyRaider 3.1. Battery is 100% then after 5-10 minutes drops down to low 90s. It bothered me at first but after several days of moderate to heavy use and still having almost 50% battery left at the end of the day, I just figured it was some kind of bug when reading the battery level at the beginning. How is your battery life overall? If it's like mine, then i wouldn't worry too much about it as long as it's lasting longer. I'm using the 1750mAh battery from Sedio.
I was having the exact same problems until I went back to stock everything and bump charged. Took the OTA for 2.2, rooted, custom recovery, bump charged, wiped stats and cache and now I'm good to go. I usually dont think crap like this works but it made a huge difference in battery life and stopped the 100-90% problems I was having.
KB
I found this on EVO forum, but I don't know how his solution works. I personally don't think this would be the solution.
http://ip208-100-42-21.static.xda-developers.com/showthread.php?t=704272
I am using the 1500 mAh battery.
My battery life is uptime around 24 hours and awake time around 6-9 hours depending on usage.
so you're not having the issue anymore, after going back to stock (non rooted) with the official OTA 2.2?
KB Smoka said:
I was having the exact same problems until I went back to stock everything and bump charged. Took the OTA for 2.2, rooted, custom recovery, bump charged, wiped stats and cache and now I'm good to go. I usually dont think crap like this works but it made a huge difference in battery life and stopped the 100-90% problems I was having.
KB
Click to expand...
Click to collapse
KB Smoka, so you don't have this problem anymore?
Do you think format the phone and wipe all the data will help?
Have anyone tried formating the phone?
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
superchilpil said:
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
I did bump charge this phone, but it still drops like crazy.
I'll try this out tonight.
Thanks!
Is this a once time fix thing or do you have to do it every time you charge?
bump charging 4 or 5 times in a row (basically bump as many times as you need to to get it to where the light turns green withing a minute of 2 or plugging it in again) and then wiping battery stats solved this for me... kinda.. i still have to bump twice, but after that it'll stay at 100 for a good while and work it's way down normally, no jumping 10% down..
superchilpil said:
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
That is bump charging. Something htc is unable or unwilling to fix.
The issue has been known for a while and you have to 'bump charge' every time to avoid the 5-10% drop.
Here's their response about fixing the "bump charge".
"Dear **********,
I understand you would like to know if an update has be released to help get a full charge on your battery without having to bump charge it. At this time we have no information about any updates being released to help resolve this issue on your device. If an update is released for your device you will receive a notification on your device that an update is available.
To send a reply to this message or let me know I have successfully answered your question log in to our ContactUs site using your email address and your ticket number ************.
Sincerely,
Victor
HTC"
melophat said:
bump charging 4 or 5 times in a row (basically bump as many times as you need to to get it to where the light turns green withing a minute of 2 or plugging it in again) and then wiping battery stats solved this for me... kinda.. i still have to bump twice, but after that it'll stay at 100 for a good while and work it's way down normally, no jumping 10% down..
Click to expand...
Click to collapse
Do you bump charge every single time you charge right now? It's pain in the butt if I have to bump charge everyday.
Yup every day. 4 or 5 times is way overkill though. Just charge phone until green, turn off (don't need to unplug), wait until it turns green then do the plug/unplug one more time.
ufvj217 said:
so you're not having the issue anymore, after going back to stock (non rooted) with the official OTA 2.2?
Click to expand...
Click to collapse
Went to stock (official OTA), rooted, custom recovery, bump charged, reset stats and cache and I'm good now.
I charged it to "full" while it was powered on. Once the light turned green I turned the phone off, charged again until the light turned green. Took about 25 minutes. Powered up in recovery wiped battery and cache and now I'm good. The key is after doing all this you have to let the phone completely die.
If you're wiping your battery stats after a bump charge, you will have this problem every time you don't bump charge.
If you wipe your battery stats after it goes green without a bump charge, you won't have this problem.
This is because the software thinks the bump charged battery levels equal 100% charge. A bump charge adds approximately 10 percent of charge.
Formatting your phone or any software changes won't actually do anything other than wipe your battery stats while your phone is not at bump charge levels.
vantagejuan said:
If you're wiping your battery stats after a bump charge, you will have this problem every time you don't bump charge.
If you wipe your battery stats after it goes green without a bump charge, you won't have this problem.
This is because the software thinks the bump charged battery levels equal 100% charge. A bump charge adds approximately 10 percent of charge.
Formatting your phone or any software changes won't actually do anything other than wipe your battery stats while your phone is not at bump charge levels.
Click to expand...
Click to collapse
I'll try this instead! I don't want to bump charge everyday! It's too troublesome.
chillmeow said:
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
Click to expand...
Click to collapse
The reason this happens is because the battery gets charged fully to 100%, and then is allowed to slowly drain back to 90% (or so) before it's charged back to 100% again. This is how Lithium batteries are charged.
Try this: charge the battery to 100%, and immediately disconnect it after it's full. Notice how the battery doesn't drop to the low 90's immediately.
The reason "bump charging" appears to work is because there is no drain on the battery, since the phone is off. It goes to 100% and stops.
There's nothing we can do code-wise to fix this; it's just how the battery technology works. Keeping it fully charged at 100% while on would damage the charging capacity of our phones.
Btw.. wrong forum.
Solutions in search of a problem
Let me preface this by saying that I’m not an electrical engineer, or any sort of expert on phone hardware, but I think a couple issues are being confused. I’ve seen many posts about this battery “problem” here and elsewhere and an important point is being missed. People are confusing what the battery is actually doing with what the phone SAYS the battery is doing. They are NOT the same thing. The battery is a physical device and it will do what it’s going to do.
Battery life is a function of battery quality, initial state of charge, and demand. If you want the battery to last longer, look at ways of reducing demand. What applications are in use? How long is the screen on? What brightness level? Overclocking and undervolting settings? All these will affect ACTUAL battery life.
At lot of the “solutions” discussed have nothing to do with conserving energy use, but have everything to do with messing with how the phone REPORTS the state of charge. A good example is the issue of the initial drop reported by many users during the first few minutes after unplugging the charger. I see this on my own phone. If the phone is “taught” that 100% charge is when it is totally crammed with juice and plugged in as well, it’s not surprising that there is a good bit of voltage drop (+/- 10%?) right after unplugging. Does this mean there is a problem? NO! It’s just the battery doing what batteries do. A lot of the suggestions about wiping battery stats and such have nothing to do with saving energy. They are ways of fiddling with how the phone REPORTS its condition under various circumstances.
My advice: if you are happy with how your battery lasts, over the course of a day or so, then learn to relax, crack open a cold brew, and revel in just what a great phone the Incredible is. If your battery isn’t lasting as long as you need it to, then look at ways to save power or get a larger capacity battery. Tweaking the battery meter function is simply a feel-good exercise and won’t get you any actual improved performance. END OF RANT.
I can confirm that my gf's phone and my good buddies phone(both were never rooted) have never had a problem with the phone charging up slow first off(both phones charge about 1% per minute). And since they accepted the OTA, have not had the problem of charging to 100% and quickly jumping down to 90%. For instance, the other day my buddy charged his phone while on to 100%, played a game for about 2 minutes and closed it, battery was at 99%. Now I have tried and continually try every possible solution to my battery dying quick and charging slow, but am realizing that this must just be the cost of customizing my phone to my liking. And at least for the moment, a stock 2.2 DINC is just not an option for me.
larsrya8 said:
The reason this happens is because the battery gets charged fully to 100%, and then is allowed to slowly drain back to 90% (or so) before it's charged back to 100% again. This is how Lithium batteries are charged.
Try this: charge the battery to 100%, and immediately disconnect it after it's full. Notice how the battery doesn't drop to the low 90's immediately.
The reason "bump charging" appears to work is because there is no drain on the battery, since the phone is off. It goes to 100% and stops.
There's nothing we can do code-wise to fix this; it's just how the battery technology works. Keeping it fully charged at 100% while on would damage the charging capacity of our phones.
Btw.. wrong forum.
Click to expand...
Click to collapse
Sorry that I posted in the wrong forum. I thought this is related to the kernel or ROM I am using (Which is development right????).
Not to question your knowledge about the "battery technology", but why is it only happening to certain people? Nowadays most device are using Li-ion battery, why this phenomenon do not occur to all devices?
Edit: Changed the title to make the answer easier to find. The battery popup killer mod has nothing to do with why the battery level drops after unplugging, as you will learn when you read the linked article. Now, on to my original post...
Pretty much every ROM for the Epic now incorporates the Battery Full Popup Killer mod at this point, but are we sure there aren't any unintended side effects of it? Is the battery charge state still being recorded to the batterystats.bin file? I know when you delete it through a file manager, or reset the stats through CWM, it does regenerate, but there is a lot more info in that file than just the full and empty charge levels of the battery, so it would be regenerated for the other services that use it.
I've had issues with my battery reporting that it's full, but only showing a charge of anywhere between 94-98%. Now, if my battery were actually defective, and losing capacity faster than normal, the batterystats.bin file should be compensating for that by recording the lower full charge level and adjusting the percent reporting accordingly, but it doesn't seem to be doing that.
So, are we sure the state of the battery is being recorded, even though the popup is being blocked? What else could be causing this issue with so many people reporting that their batteries aren't charging to full?
Questions need to go in the q&a section to keep the development section for pure development. Or as a reply on someones thread/rom. Although I have seen this question raised once before on mammons thread I think. I think the answer was that the battery is not set to charge to 100, and some other technictal details I can't remember. But from a day 1 owner of epic, my phone has never charged above 96-98, it will go to 100, but the second I pull it off charger down to 96-98. Even stock, with no mods to the battery popup notification. And now being on a rom that does have that no pop up notification, so I don't have to get woken up from a vibrating phone, there is no change. I'm sure someone else can give you the more detailed explination though.
Sent from my SPH-D700 using XDA App
I forgot that there was a Q&A thread in the development section, sorry to clutter things up. Thanks for the details, I'll see if I can find the Mammon thread that has the same question in it.
Hopefully this gets moved to the proper section as its a good question. Firon and I did some early work on this mod and I can tell you that we simply aimed at the graphical display and then stopped it from reporting. We didn't alter how it reports %s in anyway. I can also say that this issue is found in a stock epic right out of the box. My feelings are that the actual code for charging the battery is done this way on purpose which is lazy and over cautious imho, maybe they were worried about ruining batteries or even having one explode. Sounds like poor project management in any case.
sent by an Epic4g through the cosmos
OK, after searching through the threads for a little while, I found a very good article dealing with this issue.
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Basically, the battery is supposed to charge to 100%, and then it stops charging to drop the battery level down to a safe level. It will then periodically charge the battery again to maintain a high (but safe) charge level, but never back to 100%. The batteries used in smartphones today aren't safe to keep at 100%, nor is it good for them (they corrode faster), so the charging system keeps them at a full, but not completely full state during the charging process. The phone will report the battery as being full while plugged in, even though it could be running fully on battery power at that moment and a few percentage points below 100%. It does this to make it easy for regular users to know when their phone is finished charging. It's only when you delve into the details that you start to see that the battery isn't actually fully charged, and start to rip your hair out when trying to figure out why it won't do it.
To sum up the entire article, it's supposed to do that. There isn't anything wrong with your battery, or your phone, it's done to prolong the life of the battery, and so the battery won't explode or catch fire by being held at 100% for too long.
The only time my battery meter reads 100% is when I pop a fresh battery in from my external charger.
Sent from my SPH-D700 using Tapatalk
I should have also added in my last post that bump charging does actually work, but will decrease the life of your battery. The experiment that the author of the linked article concluded that bump charging until the phone actually reads 100% while unplugged increased his battery charge by around 15%. Now, if holding your battery at 100% causes premature corrosion, it only makes sense that holding it at 115% causes corrosion at a greater rate.
If you absolutely must get the most time out of your battery, and are willing to buy a new one later on, go ahead a bump charge the **** out of that battery. The author suggests (and sites battery university as a source) that the best way to go about battery charging is to do several short charges throughout the day, rather than 1 deep charge from 0 to 100%.
Also, the author suggests that you stop obsessing on what the reported charge is telling you, and just use your phone.
Still makes no sense. They could code it to say 100% when its at 95% then so we atleast have the impression that its as full as could be safely. Like I said, over cautious and lazy imho...
sent by an Epic4g through the cosmos
Yeah, I suppose it is, but then it wouldn't be accurately reporting the battery level, which I guess is what Android's goal is. Personally, I'd prefer that if 95% is as much as I'm going to get out of a charge, than Android should just lie to me and tell me it's 100%.
mattallica76 said:
The only time my battery meter reads 100% is when I pop a fresh battery in from my external charger.
Sent from my SPH-D700 using Tapatalk
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same here, was going to say this as well.
yogi2010 said:
same here, was going to say this as well.
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I wonder if that's because the charge process brings the battery to 100% initially, then stops charging. Since the battery is in an external charger, there's nothing to draw power from it, so when it hits 100% and stops charging, it remains at 100% until there's a draw on the power.
I'm curious as to whether or not the user guide for the external charger mentions anything about not leaving your charged battery sit for a certain length of time. Based on the linked article, it's claimed that keeping the battery at 100% is damaging to it.
Migital Warfare said:
I wonder if that's because the charge process brings the battery to 100% initially, then stops charging. Since the battery is in an external charger, there's nothing to draw power from it, so when it hits 100% and stops charging, it remains at 100% until there's a draw on the power.
I'm curious as to whether or not the user guide for the external charger mentions anything about not leaving your charged battery sit for a certain length of time. Based on the linked article, it's claimed that keeping the battery at 100% is damaging to it.
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that's probably true about there not being anything to draw power when it's in the ext. charger. the funny thing is, I will pop in the fresh battery, and it will boot up the phone, and I can even do a several things, and the battery will still be at 100!
I try to take the battery out of the charger as soon as possible once it hits full charge, but I'm not always able to. I don't think there were any instructions wth the charger.... the whole thing was prety minimal: I paid my 12 bucks, or whatever, and never heard from them at all, until 2 weeks later an envelope arrived from China, containing only a charger and 2 batteries, lol.
I have both the Samsung OEM battery charger that they sell in the sprint store, and the cheepo Hong Kong charger that comes with knock off batteries. They both stop charging when the chip in the battery says it's full. Neither one had any documentation. I've seen zero negative effects from leaving any of my 5 oem batteries fully charged for long periods of time. The two knockoff batteries I had both died permenantly after about a month.
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mattallica76 said:
I have both the Samsung OEM battery charger that they sell in the sprint store, and the cheepo Hong Kong charger that comes with knock off batteries. They both stop charging when the chip in the battery says it's full. Neither one had any documentation. I've seen zero negative effects from leaving any of my 5 oem batteries fully charged for long periods of time. The two knockoff batteries I had both died permenantly after about a month.
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dang, i guess i've had better luck with the cheapos.... been running them daily for over 2 months, and can't tell any difference between them and the Samsung battery that came with the phone.
yogi2010 said:
dang, i guess i've had better luck with the cheapos.... been running them daily for over 2 months, and can't tell any difference between them and the Samsung battery that came with the phone.
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When they worked, they worked great. But one day I charged one up and stuck it in my pocket. When I stuck it in my phone, i got nothin. I took it home and put it back in the charger and the indicator light said it was fully charged but it was completely bone dead. Wouldn't take a charge at all. Same thing happened to the other one a couple weeks later. I have yet to have any problems with the oem batteries.
really nice article and it actually makes me feel a lot better. i thought it was attributed to certain ROMs somehow as i feel like i picked the phone up at 100 and it stayed there on some but not others. guess that was all placebo, lol. i think hte best part of the article is right at the end:
If you are someone who can top off your phone on a regular basis, do it. Plug it in when you’re at home. Plug it in when you’re at your desk. As explained by Battery University, "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."[2]
peace
Thanks for the informative thread
Something I've discovered recently, and I am not sure I can explain it properly, but here goes...
I am running SRF 1.1.1, I don't believe this is the cause of the problem, but probably something that should be stated.
So running SRF1.1.1, I usually get wonderful battery life. I typically use an external charger and swap out batteries when they get to around 10-15%. This has worked well for me.. For the past few days I got lazy, and just plugged my phone in and left it on my desk to charge, no problem. When the battery is fully charged and I unplug it from the charger, I noticed it was rapidly draining.... I am aware that often when charging via the phone the battery immediately drops to 96% when removed from the charger. So this is normal, but I've noticed that after unplugging from the charger I lose about 10% per hour, when normally it may be 1-2% depending on usage.
To remedy this problem, rebooting seems to fix this issue. I have also had success with the airplane mode toogle. I don't see any odd usages showing up in spare parts, but is there any other way I can test this theory?
Thanks!!
Edit: Wanted to add, that this only seems to happen when using the charger cable with the phone. Swapping batteries does not seem to produce this issue. It is only when the phone is removed from the charger.
I haven't calibrated by battery lately and thats exactly what mine does too, I would stick to the external charger because our phones charge excruciatingly slow unless off. Try calibrating by charging to full while on then turn it off and let it charge more and repeat that a couple times then boot into cwm go to advanced and clear batt stats
Is there an advantage to calibrating a battery if it is not being charged in the phone?
This is the TWS bug mixed with no battery calibration.
socos25 said:
Something I've discovered recently, and I am not sure I can explain it properly, but here goes...
I am running SRF 1.1.1, I don't believe this is the cause of the problem, but probably something that should be stated.
So running SRF1.1.1, I usually get wonderful battery life. I typically use an external charger and swap out batteries when they get to around 10-15%. This has worked well for me.. For the past few days I got lazy, and just plugged my phone in and left it on my desk to charge, no problem. When the battery is fully charged and I unplug it from the charger, I noticed it was rapidly draining.... I am aware that often when charging via the phone the battery immediately drops to 96% when removed from the charger. So this is normal, but I've noticed that after unplugging from the charger I lose about 10% per hour, when normally it may be 1-2% depending on usage.
To remedy this problem, rebooting seems to fix this issue. I have also had success with the airplane mode toogle. I don't see any odd usages showing up in spare parts, but is there any other way I can test this theory?
Thanks!!
Edit: Wanted to add, that this only seems to happen when using the charger cable with the phone. Swapping batteries does not seem to produce this issue. It is only when the phone is removed from the charger.
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similar to what i have been experiencing. i enjoyed great battery life with srf 1.1.0. have a 3500mAh battery that i used to get about 48 hours out of, but now it is averaging around 25-30. i do not have anything but the stock battery to swap with, so i do put it on the charger nightly now. i was planning to recalibrate the battery tonight to see if that cleared things up.
what would be a way to fix the tws bug?
I have noticed this too. It seems to srf seems to not like my extended battery. I am lucky I get a day out of it. I some times will plug it into one of my work computers just to bring the charge up a little and it starts flashing red and discharging this is only on my extended battery not the 2 stock ones I have. I have even tried different kernals to see if that was issue it isn't.
Sent from my lean mean drunken machine useing XDA Premium and a 12 pack of Sam Lager
in looking at battery usage in >settings>about phone>battery use>cell standby i see usually 0-5% tws.
one thing i have noticed, though have not tested is that the screen appears brighter, even at the minimum setting than what i remember from srf 1.1.0
Wondering what people do on their first charge/drain to get the most out of their batteries now that you cant change them out or if this is still even a thing.
Gilley said:
Wondering what people do on their first charge/drain to get the most out of their batteries now that you cant change them out or if this is still even a thing.
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I would also like to know this.
I used to, until I got the Note 5 and googled it. From what I read the new batteries don't need to be conditioned.
Edit - found this from 2011
http://forum.xda-developers.com/showthread.php?t=1169979
Any lithium-ion or lithium-polymer battery does not need 'conditioning', in that it doesn't have a memory effect like ni-cad. Android battery percentage estimation has also improved; back in Gingerbread days, Samsung phones learned from your usage patterns what 0% really was, but that ended up requiring a battery stats wipe if you really wanted to get the lifetime from your phone that you wanted.
To get the absolute most out of your battery:
Don't let it get too hot.
Don't let it get too cold.
Don't let it drop to 0%.
Don't keep it at 100%.
Don't fast charge.
Pretty easy.
That last one...definitely been breaking that rule
I always fast charge
I have a slower charger by my nightstand, but during the day I tend to fast charge
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fast charging is only for special situations, if not, that charging mode would be the standard manner, think about it
When I get the phone I always drain in to 0% try to boot even few times and the charge to 100% while it's turned off then power it on and remove the charger... At least this helps to calibrate my S4 battery after the ROM flash... Don't see any harm in this if u get a new device or a new ROM.