I was at about 49% battery life when I rebooted my phone (to try my new Maxroam sim card) and when I started my phone again I was down to 22%?!
I have attached a screenshot to show this? Anyone have any ideas what the problem is? Is this normal. My ROM & Kernel is in my Signature.
I've had the opposite happen, too. Had 40% battery left, rebooted, suddenly it had 60%.
I'm 99% sure it's not an actual change in battery charge. It's probably something related to how it measures battery capacity, and rebooting throws it off. I wouldn't worry too much about it.
This has happened on my Captivate as well as my GNex when it randomly reboots. I have noticed that it usually corrects itself over maybe a 15-20 minute time period. I have no battery charts to prove, but when my captivate would crash and reboot the battery would be much lower than it was before like you described. If you watch, you'll see the percentage go back up without charging. Its just a glitch in the reading when things crash or don't shutdown correctly.
Sent from my Galaxy Nexus using xda premium
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Has anyone else noticed this. I will be using my phone and toward the end of the day it has about 40% left. It has that much since I usually leave the data network off unless I need it. I reboot it and it now says it is very low on battery I lose basically 35%. Any help appreciated other than don't turn off/reboot my phone until it is time to charge it overnight.
It's an extremely well known issue, that (so far) has no solution.
Does it happen with the other vesion of the syindicate rom non full?
Happened to me when I would reboot with the stock rom.
I just assumed it takes a lot of power to turn on and off.
Been an issue for me since day one. Hell it just happened to me awhile ago. I rebooted the phone with 46 percent battery than once rebooted showed 6 percent. Kinda gotten used to it but like stated above its an issue that apparently has no solution. Especially when flashing something through clockwork, it really drains the battery fast. Been an issue for me since 2.1 and all roms I have tried. Pretty sure its a hardware thing.
Sent from my SPH-D700 using XDA App
Have not tried yet but does it happen if you shutdown then power back on instead of using reboot option
Sent from my SPH-D700 using XDA App
rebooting the phone is not going to use upwards of 30% of your battery, nor would flashing a ROM. If that were the case, your phone would heat up to ridiculous levels and your battery would probably explode with that kind of output
The problem is most likely coming from miscalculation of the true battery level (which has been well documented in other threads on xda), which is rechecked during the boot process, and corrected. I've noticed that if my phone has gone long periods of time without a reboot, that this behavior happens. If you reboot your phone once every few days, it rarely happens, and if so, it's not nearly as drastic of a drop.
What does it mean if, after resetting your phone, the battery level drops from 60% to 13%? Is that hardware? Is that the ROM? is that the battery?
I ask because, after hanging on a PRL update (that i don't think was successful) for an hour, the phone wouldn't stop pulling down data for any discernible reason, so I reset it. Before the reset, the SRF 1.2 baterry icon showed 60% battery and after booting back up, the phone prompted me to charge it because it was down to 13%. In addition, I put the phone on the charger for the PRL update, during which the charge level actually decreased slightly and the phone heat up to around 35C. Spare Parts reports the battery is healthy. Is this just a freak occurance or should I be worried?
Don't worry. Just run the battery calabation procedures. Theres several ways to do it floating around the threads. Also, i've had prl updates hang as well just check under phone status in settings if it changed. Even when it has hung on me it properly updated and showed whatever I was changing to.
Sent from my SPH-D700 using XDA Premium App
this happens to me a lot...i have calibrated a few times and it always happens...it usually happens after i dip below 70 percent in battery life..when i reboot, it can say 8 % or worse.and sometimes gets stuck at at a specific battery for a while and reboot sometimes brings it back to the normal battery level..i mentioned this before in a thread but I haven't found a solution...so i barely reboot my phone unless i need to backup in clockwork or flash something
Oh man. I reboot my phone once a day to flush the RAM and keep the system fresh.
I rebooted in CWM to reset the battery stats, btw, and when I hit the "reboot phone" command, it rebooted into CWM 3.0.2.5 (I'm running the latest 3.1.0.1), which was jarring. Before that, after leaving it on charger for less than an hour, it jumped back up to about 57% and charged to full in another hour or so. Unfortunately, the batt. reported a full charge at 93%. I bump charged it up to 94%, but I ultimately decided to reset the stats just the same.
Are these known symptoms of something, or just hiccups?
I have had this issue as well. I believe it to be a calibration issue. I swap three different batteries so I attribute it to the different ones.
Strange thing happened the other day, my phone was at 22% or so and then all of a sudden just shut off. I switched batteries and it was fine, but strange.
Last night my phone was down to like 5% so I plugged it into the charger and kept using it. It was plugged in for maybe 10 minutes when I got another bettery warning that my device was at 14% (the plug had come out). Since I was almost done, I decided to leave it unplugged since the plug gets in the way anyway. Shortly thereafter, I think the Volume+ app caused my phone to crash. It just turned off. When I turned it back on, my battery was reporting 39%! I wondered if it was a fluke, so to test, I switched to 4G from WiFi on, listened to music, and continued to use my device to see if I did indeed have more time with it. It went for another 40 minutes or so before the battery was back down to 5% and I plugged it back in and went to bed.
What gives? I feel like my battery life is exceptionally awful, but I thought I was experiencing the Android OS awake thing, since my awake times do seem to be pretty high, like 50% of my time on battery even though the screen is probably on for less than 25% of my time on battery and I only have google apps set to sync in the background. Last night's mysterious battery increase now leads me to think differently though.
Are my battery stats out of whack? I'm not rooted yet so I can't reset them that I know of. I am planning to tackle it this weekend, though. I was waiting to make sure the phone doesn't have any issues so I didn't have to go through relocking it to return it.
Attempting to attach a screen shot.
Normal Android behavior. I've seen it on every device I've had since the G1
The battery and the OS become mismatched if you restart while charging. The OS will report a "faster drain" when it reality itsvjust trying to match back up with the battery.
Sent from my Galaxy Nexus
I am using CM9 RC1 with 1.2ghz OC.
So, recently I'm seeing insane battery drainage when I am either streaming music through 4G or using GPS navigation.
Battery is drying out from 100% to 40% in 3 hours. I know that this is somewhat expected.
But even after I turn off streaming or GPS, the battery continues to decrease rapidly. The phone also stays hot even after quitting all the apps.
So I decided to do reboot through power menu and suddenly battery becomes like 8%.
Funny thing is, sometimes battery percentage goes up. But recently battery percentage stays and actually phone turns itself off due to low bat.
Is my battery dying?
I have attached screenshot of battery status.
mtwow789 said:
I am using CM9 RC1 with 1.2ghz OC.
So, recently I'm seeing insane battery drainage when I am either streaming music through 4G or using GPS navigation.
Battery is drying out from 100% to 40% in 3 hours. I know that this is somewhat expected.
But even after I turn off streaming or GPS, the battery continues to decrease rapidly. The phone also stays hot even after quitting all the apps.
So I decided to do reboot through power menu and suddenly battery becomes like 8%.
Funny thing is, sometimes battery percentage goes up. But recently battery percentage stays and actually phone turns itself off due to low bat.
Is my battery dying?
I have attached screenshot of battery status.
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The drop off in percentage when rebooting is completely normal... if you take the battery out for 20 secs or so and then reboot it will show your correct percentage again...
flastnoles11 said:
The drop off in percentage when rebooting is completely normal... if you take the battery out for 20 secs or so and then reboot it will show your correct percentage again...
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Thanks for quick answer.
I will try taking out battery next time!
Make sure you didn't have any wakelocks, and check to see If your phone is sleeping when the screen is off with the "CPU spy" app
Sent from my Galaxy Nexus using xda premium
Hey guys, I've had my phone for 4 or so months now and I always charge it while my phone is off and never had any charging/battery issues until today, I decided to charge my phone while it's on and it charged up to 25% and I restarted my phone without removing it from the charger and after it booted back it it's showing 50%, I restarted a few times, tried a cold boot, it's still 50%.
Is this a known issue with this phone? does anyone know what's causing this? I've never had this happen before.
EDIT: After this happened I ran my battery to 0% so I can attempt a battery calibration and when I poped it on the charger it showed my battery was actually 0% and showed a yellow hazard triangle thing (normally it only drops to 1% and there has never been a yellow triangle before)
Sometimes the Android system can incorrectly report a battery charged. I have had it happen to me on my Nexus by about 10%, but have not had it happen to me on my G3. I would not worry about it too much if it only happened to you once. If in continues you to jump around in battery percentage, then I would suggest getting a replacement battery. Keep in mind to try not to leave it charging for very long after reaching 100%, from my experience it can effect a battery's ability to hold a charge if that is done repeatedly. Which means do not leave it charging overnight while you are sleeping. Also I would not suggest running it until 0%, I would imagine a sudden shut down of the Android Operating system is not a healthy thing for it either. Just like it is not good to go up to a computer and just pull the power cord.
AndroidPurity said:
Sometimes the Android system can incorrectly report a battery charged. I have had it happen to me on my Nexus by about 10%, but have not had it happen to me on my G3. I would not worry about it too much if it only happened to you once. If in continues you to jump around in battery percentage, then I would suggest getting a replacement battery. Keep in mind to try not to leave it charging for very long after reaching 100%, from my experience it can effect a battery's ability to hold a charge if that is done repeatedly. Which means do not leave it charging overnight while you are sleeping. Also I would not suggest running it until 0%, I would imagine a sudden shut down of the Android Operating system is not a healthy thing for it either. Just like it is not good to go up to a computer and just pull the power cord.
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Thanks for the input.
I never leave my phone on the charger while I sleep since it only drops 1% while I sleep. My phone actually only goes on the charger like 3 times a month
I know it's not good to fully drain the battery very much, I was just draining it to attempt a battery calibration in the os. And when I do this my phone usually only drops to 1% then dies, but all of a sudden it dropped to 0% this time and showed a big yellow triangle with a big exclamation mark in it
Anyways I reflashed my rom in hopes I can flush the problem out. In 4 months of owning this phone I've never seen this warning before.
This is almost exactly what happened with my old phone (Samsung Captivate Glide). If this continues to happen, it is one of the first signs of the battery failing. But if this is a one time thing, I wouldn't worry about it.
In my case, the battery was going bad. It started going from any % battery, down to 0 instantly, forcing a shutdown. After rebooting, It would show a decent charge (~60% most of the time), but would do the same thing within 5 minutes. At first it only acted up like this once a month, but it became more and more frequent that it happened every day, after using the phone for only 15 minutes. The only fix is to get a replacement battery.
fire219 said:
This is almost exactly what happened with my old phone (Samsung Captivate Glide). If this continues to happen, it is one of the first signs of the battery failing. But if this is a one time thing, I wouldn't worry about it.
In my case, the battery was going bad. It started going from any % battery, down to 0 instantly, forcing a shutdown. After rebooting, It would show a decent charge (~60% most of the time), but would do the same thing within 5 minutes. At first it only acted up like this once a month, but it became more and more frequent that it happened every day, after using the phone for only 15 minutes. The only fix is to get a replacement battery.
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tyvm, This is extremely helpful info to keep in mind. Now that you mention it I have seen the battery kinda swollen up a couple times when it got hot, only ever so slightly but I did notice it.
If my issue persists i'll defnitly try a new battery, thanks for the tip