I'm still relatively new to the whole android platform. Evo being my first. Why does the evo not sleep when charging? I have the issue of rapid battery drain when I unplug the phone from 100-90 in a matter of minutes. This bugs me to no end. The only way I am able to get around that is to watch for the phone to ding 100 and immediately unplug it and turn it off.
I believe that, and (correct me if im wrong), if your phone is awake, it is being used to its full capacity all of the time. CPU is running and doing whatever it does that drains the battery like it does when its unplugged and being used by the user.
Since the phone doesn't trickle charge it stops charging at 100% until it gets down to ~90% (all the while still reporting that it is at 100%). It stands to reason that if the phone doesnt sleep while its on the charger, its using this cpu power and this is the culprit of the rapid battery drain, and to that end, the culprit of a lot of people's battery woes.
food for thought i guess. that's my take on it.
There are numerous discussions about the charging thing. Search, or at least Google. The most intriguing answer I ever saw to this was that the charging system was set up to protect the Li-Ion battery from degradation by not cramming it full of charge all the time. (The OP on that was a bit more technical, but you get the idea.)
If it bugs you that much, you could root your phone, flash a ROM that is undervolted and compatible with SetCPU, install that, and then set a profile up so your phone is underclocked when it's charging / charged.
I searched xda prior to posting specifically about sleeping while plugged in. My query isn't neccisarily about charging bit rather the sleep function and awake state of the phone while its pretending to charge.
I'm curious as to whether this is hardware related or not. For example when the phone reaches 100% and stops charge could the phone then actually begin to sleep. Unless its physically impossible for the phone to sleep while there is a usb chord plugged into it.
A little test I did with this over the past two days. At night I charged to full and took the phone off the charge and went to bed. I woke up and only lost about 4% all night and was able to use the phone on the way to work never going below 90%
The next night I left the phone on charge all night. Wake up take it off the charger and within 10 minutes I'm down to 92%
Keep in mind I'm not blaming charging on this. The first night lasted longer off of the charger than the night on the charger simply because the phone was allowed to sleep through the night.
I could be wrong
you can set the options it will say 'screen stay on while plugged up' or something to the like
or when you plug it in, just push your lock button (the top power key)
also you can get a brightness widget and put it on your home screen. that way you can still have your screen on while charging but it will be dimmed or whatever setting you set it too.
hope this helps!
Your screen being on vs off while charging does not factor into the asleep vs awake time of the phone.
for an example of this, a freshly rebooted phone on the charger, with the screen off for 5 minutes, will have an "up" time of 5 minutes and an "awake" time of 5 minutes.
this is true while the phone is plugged in and the screen is on or off.
simply put, your awake time on the phone is always going up as long as the phone is plugged in, double this with the fact that the phone stops charging at 100% and you have constant drain even when plugged in.
the phone shuts off at 100% to protect the battery. If you want your phone asleep then turn it off at night. that is the only way to put the phone to sleep try searching app market. Other then that the only other way is to push the power/lock button at the top
Mobile internet fail. Sorry double post
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Hi all,
I've been having issues with my phone lasting nowhere as long as my girlfriends identical one,
I installed Quick System Info on both phones, Killed all tasks.. Not only is my display duller than hers on the lowest setting using the power control widget but the voltage on my battery is 3737mV while hers is 4071mV..
Is this cause for concern?
Update, forgot to mention, this is from a full charge on both handsets.
Sounds like your battery is fu#ked!
There seems to be an issue with the way android reports the battery voltage. If I leave my phone on the charger until the light goes green and the indicator says 100%, the voltage will often report between 4.146v - 4.156v.
Upon unplugging the phone would drop to 99% and 4.125v almost immediately.
I noticed the other day that after leaving the battery on the charger overnight the voltage was reporting as 4.206v and I was able to use the phone for over 15min before it dropped to 99% from 100%.
Minimum voltage before your phone powers off is around 3.6v - 3.650v. So 3.737 is pretty close to the cut-off point. The OS is may report 100% charge but your battery is not holding charge.
I had a battery on a different device that was like this. The battery had collapsed. I could charge it for 24hrs and it would not make a difference. Within 30min of use or 1 phone call it would die.
Does your battery have any bugles, bumps or protrusions? This is often a sign of a collapsed battery.
Edit: Don't write when you're tired, silly things come out of your fingers! Soz!
have you tried to swap batteries between the two phones. That will exclude either your phone or the battery from being faulty.
Yes, after scratching my head for a few days I did eventualy come up with the genius idea of putting the battery from the other phone into my phone!! and after charging it up, set it down for an hour and then checked and the battery was on 98% !!
So it looks like there is something wrong with my battery, This morning I woke up and my phone had been charging for 7 hours and was fully charged, I looked at the battery meter and it said 100%, I turned the phone off then back on and checked again.. 90% ???? WTF ??? just from turning the phone off and on?
Hey people,
I've noticed this strange effect (which I notice using the Battery Graph app to observe how my usage drains the battery). When charging the phone, the phone will increase in charge constantly and gradually as expected. However when the phone is charged, I have seen it drop approximately 10% of charge. I've seen this in 2 situations:
1. When I disconnect it from the charger.
2. On on instance before I disconnected it from the charger when I had left it for an overnight charge. However, according to the graph, it had dropped 10% charge from full while connected to the charger then simply gone back to 100%. When I took it off the charger it stayed at 100%.
I should not that neither situation happens all the time. But situation 1 is a bit more frequent.
This is also not a Froyo issue as I only upgraded to Froyo yesterday and it happened to me this morning, but has happened before Froyo. The Battery Graph app takes a reading every 5mins and it is within this 5min period that the charge has dropped 10% which would probably rule out most apps. And again, this can happen the instant I take it off the charger.
Any ideas???
Cleargrey said:
Hey people,
I've noticed this strange effect (which I notice using the Battery Graph app to observe how my usage drains the battery). When charging the phone, the phone will increase in charge constantly and gradually as expected. However when the phone is charged, I have seen it drop approximately 10% of charge. I've seen this in 2 situations:
1. When I disconnect it from the charger.
2. On on instance before I disconnected it from the charger when I had left it for an overnight charge. However, according to the graph, it had dropped 10% charge from full while connected to the charger then simply gone back to 100%. When I took it off the charger it stayed at 100%.
I should not that neither situation happens all the time. But situation 1 is a bit more frequent.
This is also not a Froyo issue as I only upgraded to Froyo yesterday and it happened to me this morning, but has happened before Froyo. The Battery Graph app takes a reading every 5mins and it is within this 5min period that the charge has dropped 10% which would probably rule out most apps. And again, this can happen the instant I take it off the charger.
Any ideas???
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your asking to get slapped asking this question its been discussed in so many threads lol heres the score, when charging with the phone on, when ur charge reaches 100% it then discharges to 90, it will follow this cycle untill you unplug it, this is called exercising the battery, and i assume it a preventative method to stop you damaging your battery by overcharging it
I will consider myself duly slapped for not checking it up. I normally tell other people they should have checked!
I bought my Xperia Arc S LT18 in April 2012. Up until now, my phone has served me well. As with most modern smartphones, the battery will start to die. And I'm in the marker for a new battery, however. Last night, I noticed my phone would not charge, so I decided to just turn the phone off and go to sleep, assuming I would have at lease some battery left. I was wrong.
My phone was dead, after much time and effort, I managed to turn my phone on and wiggle the charger around enough so it could get a connection and charge. However, the charge does not hold. It will get to around about 3-5% then just drain, as if I unplugged the USB cable. I've tried everything I can think of to try and speed up the process of charging (Offline mode, Power saver underclock (currently at 456MHz) lowest screen brightness etc.) but it will only get to about 4% charge. I get the I need a new battery but this is just ridicules.
I've ran out of options, I'm going to bed soon and I'm going to leave it on charge over night.
In case it matters I have the stock battery, used many chargers and USB cables over the time I've had my phone, using the Ultimate HD custom ROM.
Not sure if this is allowed but bumping, I'm at my wits end and I really have no clue what the next move is.
I've left it on charge all day and the problem is still occurring. Should I buy a new battery?
I've just bought one of these (See attachment, under 10 posts..)
These capchas are the worst, 5 in a row I've failed/skipped ¬_¬
I always been afraid to leave my g3 charging during the night. But is it true that it damages your battery.
Should I start to leaving my phone charging during I sleep without worries?
Do it every time, with the device powered off. Power is disconnected when battery reaches 100%, so no problems.
night charge now is safe for your phone. The phone will not recharge until the battery <95% or 90% (still plug in )
I charge the phone overnight every night - with the phone left on. No issues.... As mentioned you can do this now with today's battery technology without worrying about battery memory, etc.
I have done this all the time with all my smartphones. No issues.
Just don't leave it on your pillow or on the bed as it may reduce heat dissipation. But perfectly fine to be left overnight charging.
I always leave it to charge when going to bed, but it gets fully charged only 2-3hrs in, so it stops charging as i have not noticed it heats up excessively. PS: i put it into airplane mode too.
The nice thing about G3 over many other phones (even G2) is the battery is replaceable. Even if you kill it over time, just buy a new battery. Voila.
Good day to everyone! Hope you all are doing well!
To start with, power consumption was just terrible on MIUI, i switched to custom firmware (crDroid) - according to subjective feelings, energy efficiency has improved twice as much, no less, and it was like new birth for my phone!
However, I am VERY annoyed and a couple of times already have been put myself in an awkward situation due to one problem with the phone, which is long, no, actually VERY long time to turn on after full discharge. It takes up to 10 minutes to charge 1A after the phone has run out of power (!!!) so that the device turns on, and the screen may show that there is 1-2%, but when you turn on the device declares that the battery is too low to turn on. Just imagine how awesome is to miss calls from your clients because you`re waiting for your phone to charge enough that it can turn on for decades of minutes... and if i am in a trip and connect it to pc, then charge time before turning on may exceed 30 minutes!!
In this regard, my question is: is it possible to somehow configure the phone to turn off from discharge at a higher battery current (i.e. that the phone turns off in fact at 3-4% of charging, but in the interface it is displayed as 1%) so as not to wait for a hundred years until the phone is charged? Ruth has access, of course.
I was thinking about editing init.d or systemd, or whatever its Android counterpart is. Maybe there already are any solutions for this? Or if not can someone give me an advice where to dig in to make the things work like i want them to?
Great thanks in advance!
I just use "gsam battery monitor" to play an alarm when the battery drops to 20%, I look after my battery as i cannot afford to replace my N8P anytime soon, I also set an alarm so i get a warning when i am charging and it hits 80%(you have to pull out the charger), As charging to 100% every time damages your battery.
It would be nice if the phone could be set to stop charging at 80% or 90% like you can on a lot of notebooks.