Develop Bugs

Quick Battery Drop in Initial 10%

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?

[Q] Skyraider 3.3.1 question about battery

My battery seems to drop by 10 percent almost immediately after coming off charger. I read this is a known issue. My question is if I install different kernel will this fix problem? And what would be a good starting one?
Thanks!

That will happen no matter what kernel you have installed. You must bump charge to reach a full 100% charge. Try out different kernels, everyone has their own opinion on which is best. I am using the newest stock HTC kernel and get great battery life, but i also did with Kings BFS Kernel.

Wonder why this can't be fixed?
By bump charge do you mean that you unplug and plug back?

Charge your phone to full with the phone turned on, then power off and charge till the light turns green again.

[Q] Phone won't charge to 100% unless turned off?

I have a problem with my phone hanging at 93-97% when charging. I have to turn it off and within a minute or two it shows that it is fully charged. I'm wondering if anyone has ran across this problem and is it the phone or something else? It does this across all the ROM's and kernel combos that I have used over the last few months and I can't figure it out.

gajendarksky said:
I have a problem with my phone hanging at 93-97% when charging. I have to turn it off and within a minute or two it shows that it is fully charged. I'm wondering if anyone has ran across this problem and is it the phone or something else? It does this across all the ROM's and kernel combos that I have used over the last few months and I can't figure it out.
Click to expand...
Click to collapse
I've ran into that a few times, where it would seem to stop charging at around 95 or 96%. I changed to a different kernel and also wiped my battery stats, and that solved my issue. It's odd that it does it on any ROM/kernel combo. It doesn't seem to matter if it's Sense or AOSP? Have you tried wiping your battery stats? If not, give that a try. I'd also wipe cache and dalvik cache at the same time. You want to be charged up to 100% when you wipe the battery stats, btw. If that fails to solve the problem, the next thing I'd personally try out is using a different/new charging cable.

k2buckley said:
I've ran into that a few times, where it would seem to stop charging at around 95 or 96%. I changed to a different kernel and also wiped my battery stats, and that solved my issue. It's odd that it does it on any ROM/kernel combo. It doesn't seem to matter if it's Sense or AOSP? Have you tried wiping your battery stats? If not, give that a try. I'd also wipe cache and dalvik cache at the same time. You want to be charged up to 100% when you wipe the battery stats, btw. If that fails to solve the problem, the next thing I'd personally try out is using a different/new charging cable.
Click to expand...
Click to collapse
I've tried all those and no luck. I am totally perplexed as to what it could be, but I will give the battery stats another try, I can't remember if it was fully charged or not. The other thing that I am wondering is if it could be the PRI/NV that might need to be downgraded perhaps? If so, will these be ok with the newer radio?

gajendarksky said:
I've tried all those and no luck. I am totally perplexed as to what it could be, but I will give the battery stats another try, I can't remember if it was fully charged or not. The other thing that I am wondering is if it could be the PRI/NV that might need to be downgraded perhaps? If so, will these be ok with the newer radio?
Click to expand...
Click to collapse
You should be able to run the 1.77_003 PRI and NV with the newer radio. When I downgraded my PRI, I also downgraded the radio at the same time, but I don't believe that was necessary. Just be cautious, I believe that the stock htc #15 kernel runs crappy or won't even let the phone boot on the older radios/pri. So if you do downgrade the PRI / Radio, I'd suggest using a custom kernel. All that said, I have never heard of a certain version of a PRI or Radio causing any sort of charging issues like you're having. That is sort of odd. Perhaps it's the battery itself?! Have you tried using a different battery?

I have two batteries that I switch and it does the same thing on both.
Sent from the biggest damn EVO there ever was...

its the evo, its called the way they charge the phones, the only way to get 100 percent charge is using a sbc kernal, otherwise you have a phone that comes off the charger anywhere from 90-100% because thats what the phone is told to do

iitreatedii said:
its the evo, its called the way they charge the phones, the only way to get 100 percent charge is using a sbc kernal, otherwise you have a phone that comes off the charger anywhere from 90-100% because thats what the phone is told to do
Click to expand...
Click to collapse
It should still charge to 100%, where the light turns green, even without an SBC kernel. It's true, that the Evo stops charging at a certain point, and it's very possible to take it off the charger anywhere between 90-100%, as you stated. However, when it's plugged in, it should still register full, and the led should still be green. Then once it's unplugged, a rapid decrease will be noticed, as it registers where the actual charge is at.

k2buckley said:
It should still charge to 100%, where the light turns green, even without an SBC kernel. It's true, that the Evo stops charging at a certain point, and it's very possible to take it off the charger anywhere between 90-100%, as you stated. However, when it's plugged in, it should still register full, and the led should still be green. Then once it's unplugged, a rapid decrease will be noticed, as it registers where the actual charge is at.
Click to expand...
Click to collapse
The phone will charge to full capacity only when it's turned off only, never when its on. Like I said before, it will charge at a normal rate and then just stop at the 93-97% range for hours until I turn it off and then within a minute or two the light will turn green.

[Q] Not sure if I have found a battery drain bug or what

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.
Click to expand...
Click to collapse
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

[Q] Why is my battery losing life, or not displaying correct percentage?

About a month ago, I flashed Gingerbread onto my Epic 4G. Did nothing else, been running the usual BatteryLife by CurveFish without any hiccups or fluctuating readings.
However, recently, I don't seem to be getting a full charge. Or, the battery likes to drain. Either that or BatteryLife is not giving proper readouts anymore. For example, I can plug my phone in and let it charge. Its LED will go blue and the widget shows 100%. But, now, sometimes I'll look at the phone again later (while it's still connected with the charging cord or not) and the widget will read something like 82%. And, just now the widget is now showing 78%.
My battery has been fully discharged and recharged many times before for proper calibration. I even ran a battery calibration app. Still, this problem happens. What exactly is going on? I have had the phone tethered to remain charged and never once had a problem with the battery. I do know when I flashed Gingerbread, my battery life has increased dramatically.

Charge till you get the fully charge notification
Then turn off
Then go into click work recovery
Go to advanced
Click reset battery stats or something like that
Put back on charger
This proly happens cause of overheats from the super crap **** gb leaks
Also discharging the battery doesn't help
Sent from my SPH-D700 using XDA Premium App

Then, why does everyone say to get the most out of your battery, you discharge it fully then charge it up to 100% about a couple times to maintain proper battery life and calibration?

There is an issue with some installations of the gb leaks where the battery stops charging at 100% even when it is still plugged in. I had this issue and could not remedy it. Went back to a solid ec05 base and my charging works fine again.