So, I'm not sure if anyone has this problem. I pull my phone off the charger in the morning when I wake up, and it's immediately at 96%. Is this a defect with my phone, or is it something I can fix?
Thanks
It's normal. It's actually better on the battery this way. There were some debates about the EVO and kernels that performed SBC charging.
This has been covered in another thread but here it is again...
HTC has used a new charging method on the e3d so it will charge to 100% then stop charging until it hits 95% at which point it will start charging again.
Sent from my EVO 3D using XDA app
connerrs said:
This has been covered in another thread but here it is again...
HTC has used a new charging method on the e3d so it will charge to 100% then stop charging until it hits 95% at which point it will start charging again.
Sent from my EVO 3D using XDA app
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Please link me to this thread, cause I didn't find it when I looked before my post.
eXplicit815 said:
Please link me to this thread, cause I didn't find it when I looked before my post.
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http://forum.xda-developers.com/showthread.php?t=1143929
i use the battery monitoring widget.. it has a log that shows you the actual % of the battery while charging.. sometimes the phone will be displaying 100% while charging but in the logs you can see the battery is decreasing and not at 100%.
which is why when you pull it off the battery drops right away.
I'm glad I decided to search first, otherwise I would have the whole XDA community after me wanting to kill me.
Anyways, I have one of those notification icons that show me the battery percentage, but it NEVER reaches 100%. I am constantly checking it to see if I have reached 100% and nothing. Even when I leave it plugged it all night, it only gets to 99%.
I have also tried *#*#4636#*#* and it also shows 99%. Is this normal?
Your battery will technically never be at 100%. As even the most minute drain places it at 99%. Doubtful that HTC is that precise, I understand your frustration
Ok, but my evo 4g WOULD show 100%. That's why I was confused/worried when my 3D showed only 99% max.
This is a frustrating quirk with these phones. I also use battery monitor widget (love it BTW) and its pretty clear how the phone acts around a full charge. See below, graph of battery percentage overnight sitting on the charger.
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If i happen to pull the phone off the charger when it is actually full (or as close to as it will get) then it seems like the battery really lasts much longer throughout the remainder of the day. If i pull it at say a 95% mark then it seems to be down to 80-85% by the time im out the door in the morning after a few emails / dickin around. If i pull it when its full then i only seem to lose a few percent, maybe up to as much as 5% by the time im out the door....
SBC kernel fix / help remedy any of these behaviors?
"Li-ion cannot absorb overcharge, and when fully charged the charge current must be cut off. A continuous trickle charge would cause plating of metallic lithium, and this could compromise safety. To minimize stress, keep the lithium-ion battery at the 4.20V/cell peak voltage as short a time as possible."
Don't panic, it's all as it should be. Don't try to outsmart your smartphone.
Recently they found that charging to a little less than 4.2V you get more charge/discharge cycles out of your battery.
BatteryUniversity
Related
Ok, here is my problem.
The battery indicator its stuck either at 100 % or 95%. I know my real batery life with a program (battery indicator pro).
It seems that the only way to charge it correctly is power it down and plug it to the charger (original by the way). If i charge it while is turned on, the indicator that signal the 100% charge never pops up.
I'm using the go launcher ex, its not rooted, and the stock rom (2.2.2 International).
PS:Yeah i know, my english is pretty bad, so please bear with me.
Mine gets stuck at 80%, both charging and discharging. After 3 or 4 hours at 80% it will go to 100% a few hours later. Hopefully they'll fix this on an update! The battery itself seems to be operating properly.
Well... I guess I take comfort in knowing that I am not the only one experiencing this odd bug. I have the exact behavior and like it's been said, my 5.0 player seems to have normal battery life. I just can't trust the charge indicator.
The method this device uses to estimate state of charge is VERY primitive.
It has a fixed table based purely on battery voltage - the problem is that battery voltage can vary quite a lot for a given state of charge depending on load.
https://github.com/Entropy512/linux_kernel_galaxyplayer/blob/master/drivers/power/adc_battery.h#L87
I'm not sure why they didn't use the MAX17040 fuel gauge that is built into the MAX8998 PMIC...
mV readings seem more accurate than %:
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mV readings are a poor estimate of state of charge, since they'll go up when on a charger, and down when under heavy load.
Our battery % indicator is derived directly from those mV readings. (Which is why our battery % estimate sucks.)
What IS odd is that you seem to have a case where the charger held flat at around 4060 mV for a while - which does correspond to an 80% reading. I think I've seen that once too, might be a kernel bug there, I need to look.
Showing 100% with the voltage dropping shouldn't have happened - I've never seen it myself.
I believe the "stuck" numbers are 80%, 100% and sometimes 65%. Happens every cycle for me, 80% being worst. But on a reboot, immediately drops 25-35% (depending how long it was stuck for). So if you reboot every hour, it will show good readings (but I reboot about once a month).
My tablets battery will say 100 then how down to 3% so ill turn it off then back on and it'll say like 35%. Then most recently its been stuck on 35-37% for some odd reason.
Did you guys try wiping the battery stats in CWM?
So I took out my sd card this morning and realized I had been using my replacement battery not the original one that came with the phone. (They are both the same official samsung battery, I just marked them so I know which is which) Later on this evening my phone was at about 45% and I decided to switch batteries because I had opened it back up to reinsert my sd card. I start the phone back up and my 2nd battery, which I always keep at 100% as a backup, was showing only 81%...
I thought this was odd since I put it on the charger for about a half hour every few days to make sure it's fully charged before I start the day just in case I need it. Anyway, I forgot about that quickly and set my phone down on my desk. About 5 minutes later I get a text message, unlock the phone, and low and behold the battery says 83% (and no it was not plugged in all day and had not been charging!) Has anybody ever seen a phone "charge" while it's not plugged in before? It went up to 93% and then finally started to die. Slowly increasing every ~10 minutes give or take. I even have the screenshots to prove it was "charging" while not plugged in.
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The only time I've seen a battery increase it's charge is when the temperature of the battery changes rapidly.
And perhaps if a cell bridges over ..
But that's usually reserved for lead acid type batteries....not lithium ion cells..
You have taught me today ....as this is a first for me ....
And I wouldn't be surprised if the battery is starting to fail ...so watch it to prevent any possible device damage.....g
Um. No. What you're seeing here is recalibration as the phone adapts to the other battery.
So you changed batteries while plugged in ??
Ah yeh, that explains the battery charge increase, as the new battery takes over, and the cycle record was not reset because the phone still has power...
battery is fine......my bad....g
I've had that happen before, and I only use OEM batteries with my phones. Like somebody else said its just a software hiccup where it's recalibrating. I've had times where I've pulled a battery to flash something at like 50 percent battery, when I boot back up I have like 10 percent showing, and it will slowly increase back up to like 40 percent. Its happened a few times and there's nothing to worry about.
Sent from my Galaxy Nexus using Tapatalk 2
No the phone was not plugged in. And I've switched batteries before without this happening. I know its not a problem I've just never ever watched a phone "charge" itself
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Sounds like a battery stats "hiccup" to me, when you rebooted after swapping the batteries it thought that the battery was the same, so it just kept polling like normal and reporting the "new" status. But i think that when a battery is inserted like that, I don't think that it can instantly report what the exact new voltage/Mah so it pretend charges like what you reported. AT least that's the most logical thing i can think of. My extended battery would "charge" like that sometimes if I battery pulled for some reason...
redneck.nerd said:
Sounds like a battery stats "hiccup" to me, when you rebooted after swapping the batteries it thought that the battery was the same, so it just kept polling like normal and reporting the "new" status. But i think that when a battery is inserted like that, I don't think that it can instantly report what the exact new voltage/Mah so it pretend charges like what you reported. AT least that's the most logical thing i can think of. My extended battery would "charge" like that sometimes if I battery pulled for some reason...
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XDA is no longer worth my time.
Anyone else seeing issues with really inaccurate battery readings? I'll be at 99% charged for 15+ hours sometimes, and then things will drop rapidly or even just die at 20%. I've also noticed when charging that it'll get to 99% within an hour or so and then spend 30-45 mins at 99%.
On top of this, my phone battery just died at around 55%. Are others just draining their battery all the way to try to calibrate?
wsoldier said:
Anyone else seeing issues with really inaccurate battery readings? I'll be at 99% charged for 15+ hours sometimes, and then things will drop rapidly or even just die at 20%. I've also noticed when charging that it'll get to 99% within an hour or so and then spend 30-45 mins at 99%.
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wsoldier said:
On top of this, my phone battery just died at around 55%. Are others just draining their battery all the way to try to calibrate?
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I always calibrated battery by draining it all the way and charging it all the way atleast first 3 times.
Sent from my HTC 'One' DNA
What rom and Kernel are you on. Also what mods if any such as battery indicators and such have you put on your phone?
@dragonstalker: I'm running stock with the latest OTA update. I'm using Batterybot to display the indicator in the notification bar, but the reading is the same from the stock battery display.
@amit_sen: I've had the phone for a few months.
amit_sen said:
I always calibrated battery by draining it all the way and charging it all the way atleast first 3 times.
Sent from my HTC 'One' DNA
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Doesnt do anything for Li batteries its fud.
For the last 2 days, my battery has drained overnight and is dead by the morning. The first time, I didn't think of it. This time, I looked at the history and it drains within maybe 6 hours without the screen on, being awake, or anything. I turn off all of my radios besides cellular at night. So I have no clue what could be causing the battery drain. Any ideas? Here is a pic of the history
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scariestgnome said:
For the last 2 days, my battery has drained overnight and is dead by the morning. The first time, I didn't think of it. This time, I looked at the history and it drains within maybe 6 hours without the screen on, being awake, or anything. I turn off all of my radios besides cellular at night. So I have no clue what could be causing the battery drain. Any ideas? Here is a pic of the history
View attachment 1867757
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Install gsam or bbs and see what they say us causing it.
Sent from my HTC6435LVW using xda app-developers app
Is anyone using battery calibration apps? I know some of the custom ROMs like Hatka Supreme list that they include some sort of function in those regards.
I thought even on stock there was a way to erase battery stats so that you could recalibrate. No? Could of sworn I had seen the option when I first got the phone. Could be wrong too...
Bigandrewgold said:
Install gsam or bbs and see what they say us causing it.
Sent from my HTC6435LVW using xda app-developers app
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I downloaded Gsam and it says that my radio is taking up most of my battery. Any idea why this is happening because its never done this before? I used to get at least 2 days of battery usage. I charged it until it was full yesterday, let it sit overnight, and this morning it was @ 20%. I'm on newts M7 and z's B5.4. I've been on this combination for the majority of the time I've had my phone an no problems until now. And I don't think its the kernel because the same thing happens when I had it on 5.1. I noticed I was on global mode and I changed it to LTE/CDMA. Who the hell knows, that might be what's causing it. We'll see. Any help is appreciated.
Although I've had this phone for over a year now, it took me up until now to bring this up:
When charging, once the battery level reaches 90%, it shoots up to 100% although the battery isn't fully charged. Using Cool Tool to read the battery voltage from /sys/class/power_supply/battery/batt_vol_now shows that while idle, the voltage reaches the full capacity of 4.3 volts. However, when the phone does any sort of processing or heavy I/O, it drops to something lower, which is expected since it clearly hasn't reached full charge.
The phone acts as if the battery is fully charged, so when I unplug it, the battery level (and voltage) instantly drops to somewhere between 90 and 100% depending on how long I leave it plugged in after it first shows 100%. I don't take this as a sign of battery aging, since if I leave the charger plugged in for an hour after it charges to 100%, the battery voltage stays at maximum capacity and drains normally depending on how much I use the phone.
What I'd like to know is if this happens to anyone else, because to me it seems more like a software issue rather than something hardware-related. I am running stock 4.4.2, rooted. There are no system-level modifications due to HTC's system partition protection, which I haven't found a need to bypass.
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jim45 said:
Although I've had this phone for over a year now, it took me up until now to bring this up:
When charging, once the battery level reaches 90%, it shoots up to 100% although the battery isn't fully charged. Using Cool Tool to read the battery voltage from /sys/class/power_supply/battery/batt_vol_now shows that while idle, the voltage reaches the full capacity of 4.3 volts. However, when the phone does any sort of processing or heavy I/O, it drops to something lower, which is expected since it clearly hasn't reached full charge.
The phone acts as if the battery is fully charged, so when I unplug it, the battery level (and voltage) instantly drops to somewhere between 90 and 100% depending on how long I leave it plugged in after it first shows 100%. I don't take this as a sign of battery aging, since if I leave the charger plugged in for an hour after it charges to 100%, the battery voltage stays at maximum capacity and drains normally depending on how much I use the phone.
What I'd like to know is if this happens to anyone else, because to me it seems more like a software issue rather than something hardware-related. I am running stock 4.4.2, rooted. There are no system-level modifications due to HTC's system partition protection, which I haven't found a need to bypass.
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I don't have this issue with my M7, but I found this post which might be useful to you.
Last night I used the wireless charger for the first time. Seemed to work great and had 100% when I woke up this morning.
It's about two hours later and I notice my battery is down to 55%. The phone is warmer than usual, two hours later as well. I haven't been doing anything special besides texting and some light Facebook.
For the last week I have been getting about 24 hours on one charge. The battery usage predicts I'll be out of juice after three hours.
I'm using this charger: PLESON Fast Wireless Charger Cell QI Fast Wireless Charging Pad Stand
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I have the same battery life (around 40% remaining when I go to bed each night) whether I use the wired charger or my Tylt Vu wireless charger to charge my phone at night. Granted, the Tylt Vu only uses slow charging. But if your phone is fully charged, it shouldn't matter which type of charger you use.
My first priority would be to check for rogue battery draining apps.
sn0warmy said:
But if your phone is fully charged, it shouldn't matter which type of charger you use.
My first priority would be to check for rogue battery draining apps.
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Right. I've heard discussions of whether different ways of charging can affect total life of battery... LIke QuickCharge might be rougher on battery than slow charging.
But if a battery is charged, then it's charged. It won't deplete faster in one cycle depending on how it's charged.
ChazzMatt said:
Right. I've heard discussions of whether different ways of charging can affect total life of battery... LIke QuickCharge might be rougher on battery than slow charging.
But if a battery is charged, then it's charged. It won't deplete faster in one cycle depending on how it's charged.
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Yes, makes sense. In my screen shot you can see my two highest battery drains. Is there another way to tell if an app is killing battery besides the list on the battery usage screen in the settings? The warmth of the phone even two hours after it was off the charger is a dead giveaway, but the app list was pretty sparse.
Thanks!