Is it possible to have my phone not charge when I plug it into my PC via USB cable
Sent from my HTC Magic using Tapatalk
I was about to open a new thread regarding this in the same section, yet I noticed this old one idling about with no replies at all, why not restoring it from the dead.
So, like, how to disable automatic phone charging when connected to PC via USB?
I am trying to transition from WM to Android on my HD2, and I am currently checking how smooth it can be, yet this maniacal fixation of android to charge the battery whenever I plug a USB cable just pains me, in WM there's a nice option to "do not charge the battery when I connect the phone to the PC".
I have done my share of searching, both in here and in the mare magnum of google's index, but all the replies I could find in fora around the tubes of the internets were:
1) "Why should you disable that?"
2) "I don't know, try cutting the power line in the USB cable" (??). (btw, that doesn't work as it apparently renders the cable useless for syncing)
3) "Why would you ever want to do that?"
4) "Tethering needs power so it's a good idea not to disable usb charging, just leave it on"
5) "Why ever in the world do you want to ever disable that, like, ever, in everland?"
6) "Use a bluetooth connection for tethering so you won't need the usb cable"
7) "You can't"
8) "blah blah EVER blah EVER EVER blah LEAVE IT ON blah blah did I say EVER already?"
So, why do I want to do that? Because I want to
Did someone find any kind of setting to have android stop charging the battery when I want to plug a USB cable to the PC?
I'm pretty sure it's not something you can change in software since the would phone charge when plugged into a computers USB port. You'd probably need to get your hands dirty and short a connection or two on the phone itself.
Well this is not the reply you are expecting but a solution would be to buy a cable that only syncs and does not charge if you can find one (I have USB cables that only charge or charge & sync but I don't know if USB cables that only sync exist ...).
Usb Charging Commander
goodboynyc said:
I'm pretty sure it's not something you can change in software since the would phone charge when plugged into a computers USB port. You'd probably need to get your hands dirty and short a connection or two on the phone itself.
Click to expand...
Click to collapse
take a look at post#3 in my last link - the guy is talking about Enclair and I can't swear, but I think I also kind of remember it was there
so - it WAS possible. I am not sure why it is not anymore...
ephestione said:
...
1) "Why should you disable that?"
So, why do I want to do that? Because I want to
Click to expand...
Click to collapse
Here is my reason:
I connect the phone to PC and disconnect it 20-30 up to 50x in a day (transfer the data all the time to PC, but have to get out of the office as soon as the phone rings to take the call - or to make one...)
I have heard that the Li-Ion battery don't suffer a "memory effect".
My interpretation of the "mem effect" is that with time, the Li-Ion battery won't provide shorter using time if it is randomly charged (not drained to 5% and then fully charged).
But what about a charging cycles How much can a lifetime stand? 1000, 2000 cycles?
And how do you count a charging cycle:
- connected/disconnected to the charger, or
- charged (in 1, 2, 10 iterations) from 5% to 100%?
In the first case, I really can see a potential of this app...
Or are you saying that I can connect and disconnect the charger for unlimited times?
Math:
30 x 365 = 10950.
Can a Li-Ion battery stand 10000 charging cycles (in a year)?
Plus - take a look at this tread:
http://forum.xda-developers.com/showthread.php?t=334542
This is a Kaiser forum (WM), but there are a few more logical reasons aplicable to android phone, also...
Did someone find any kind of setting to have android stop charging the battery when I want to plug a USB cable to the PC?
Click to expand...
Click to collapse
Take a look here. I just saw this tread, so I didn't test it - yet:
http://android.modaco.com/content/z...n/333406/usb-charging-commander/#entry1717856
Cheers
ephestione said:
I have done my share of searching, both in here and in the mare magnum of google's index, but all the replies I could find in fora around the tubes of the internets were:
1) "Why should you disable that?"
2) "I don't know, try cutting the power line in the USB cable" (??). (btw, that doesn't work as it apparently renders the cable useless for syncing)
3) "Why would you ever want to do that?"
4) "Tethering needs power so it's a good idea not to disable usb charging, just leave it on"
5) "Why ever in the world do you want to ever disable that, like, ever, in everland?"
6) "Use a bluetooth connection for tethering so you won't need the usb cable"
7) "You can't"
8) "blah blah EVER blah EVER EVER blah LEAVE IT ON blah blah did I say EVER already?"
Click to expand...
Click to collapse
Add #9 to your list: What bother when the thing hardly charges at all via USB when being used.
P.S.
ephestione said:
Math:
30 x 365 = 10950.
Can a Li-Ion battery stand 10000 charging cycles (in a year)?
Click to expand...
Click to collapse
Being randomly plugged in for a couple of minutes does not count as a charge cycle. As noted above, the battery will not even notice.
Ok, for a couple of minutes, but I don't take a calls every few minutes...
It's (verry approx.) every 10-15 minutes. Sometimes 3x in 5 minutes, sometimes no call in an hour, but definitly I can see that my phone is charging, and the percentage is changing (up and down).
Is there a word or two somewhere about this toppic - what a charging cycle means for a Li-Ion battery?
Cheers
p0peye said:
Ok, for a couple of minutes, but I don't take a calls every few minutes...
It's (verry approx.) every 10-15 minutes. Sometimes 3x in 5 minutes, sometimes no call in an hour, but definitly I can see that my phone is charging, and the percentage is changing (up and down).
Is there a word or two somewhere about this toppic - what a charging cycle means for a Li-Ion battery?
Cheers
Click to expand...
Click to collapse
Li-Ion batteries actually do better with frequent partial charges/discharges. If you want to maximize your long-term battery life, you'll keep it at 40-60% charge state most of the time. If you know you'll be away from a charger for a long time, then go ahead and bump charge it to 100%, but doing this all the time will shorten the life of the battery. Same with running it down too far. Also, a slower charge rate is better for the battery, so if you don't need a rapid charge, the capped current when charging from USB vs wall charger should be better for your battery. See http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Don't get me wrong, there are valid reasons to not want to charge your battery when connected to USB, but an irrational fear of frequent short charges is not one of them. Some valid reasons I can think of:
1. Don't want to drain laptop battery.
2. Phone is already hot and don't want charging to get it hotter.
aweaver33 said:
...
If you want to maximize your long-term battery life, you'll keep it at 40-60% charge state most of the time.
...
1. Don't want to drain laptop battery.
2. Phone is already hot and don't want charging to get it hotter.
Click to expand...
Click to collapse
Bingo, we have a winner!
Another reason, which is my case, is that I want the phone to treat USB power as a secondary battery (use it while it's there, and switch to main battery only when it depletes or is unplugged) when it in fact is a secondary batttery (I was going to post a link to the product in question, but forum rules; see DX sku 18883 or any of the portable chargers available anywhere) Has anyone found a way?
A google search on this issue returns a topic on modmymobile.com (search it yourself; forum rules) with this:
You can turn off USB charging from XLR8's seem map
No Bit manipulation just change the value.
004b-0001
offset 207
01 charge via computer USB connection
00 do not charge via computer USB connection
Click to expand...
Click to collapse
Frankly, I have no idea what that means. Is it something I could use on my Blade or is it HW-specific?
Is there a simple way to disable usb charging for Samsung Galaxy Gio and HTC Desire HD? Thanks in advance!
You might give this a try usb-charging-commander - I can not post outside links so you have to search on your own. It's on modaco forum.
Your device got to be rooted
Regards
psajko said:
You might give this a try usb-charging-commander - I can not post outside links so you have to search on your own. It's on modaco forum.
Your device got to be rooted
Regards
Click to expand...
Click to collapse
Thanks for the tip. Sadly, it doesn't just disable charging, it cuts off USB power completely (the phone runs on battery). Better than nothing I guess.
The USBChargingCommander application was promising, too bad on my Galaxy S2 it does nothing even after a reboot
ephestione said:
too bad on my Galaxy S2 it does nothing
Click to expand...
Click to collapse
This should come as a surprise to no one who's looked at the code> https___github.com_t0mm13b/UsbChargeCommander/UsbChargeCommander.java (replace underscores with colon-slash-slash and slash). It simply performs
Code:
write /sys/module/msm_battery/parameters/usb_chg_enable 0/1
as root. msm_battery is a chipset-specific driver, and since GS2 uses a different chipset, this app cannot work on it. If however, you or someone savvy with a GS2 can search the sysfs interface and find a parameter which controls USB charging, getting the app to work on GS2 should be a breeze for tommie (or anyone with ADK, since tommie made the code available ).
Of course, there's no guarantee such a parameter exists, in which case there's not much you can do.
USBChargingCommander don't work on my Desire HD
The path is: /sys/module/htc_battery/parameters/
But in this folder there is only: debug_mask
How can i make it work?
Edit
Found another path: /sys/power/
There are the files state (value "mem") and state_onchg (value "chgon")
Maybe this can help..
Isn't USB charging an option under ##data# ?
Nothing found...
just /data/d/htc_battery/charget_state
Hi there,
I want to push this thread back up.
perhaps someone has now found a solution to the problem.
i like the cable only for transfer and tethering, but not to charge from my laptop.
the battery is draining too fast then.
and i didn´t found an only transfer usb cable,without charging.
thx alot
hi all,
I'm interested too. Any clue on how to do this on HTC wildfire? I've already checked all the folders you guys suggested without success.
Also checked the arco68's kernel source code and found some entry points . I asked to arco and he confirmed that would be possible to implement the feature recompiling the kernel...I've never did it. any kernel dev out there interested?
cheers
ste
Use recovery
Connect USB In a recovery like CWM. There is option to do that in mounts and Storage-Mount USB storage.
HOPE I HELPED!!!
Related
It seems my power adaptor has died..
I have been using it daily with no problem, and charged it over night last night.
I got a new stand today and moved the power supply to a new location, shifting the transformer with the adaptor still plugged in.
From that point on, no charging...
the cable is good cos it still shows up on the PC, although I guess it could be partially broken.
I have tried leaving the power adaptor unplugged for an hour or so, but no luck.
Anyone else have suggestions?
Is it possible that you bent a pin in the slot on the pad that you plug the charger into? Alternatively, you could take apart and reseat the 2 pieces
of the charger itself.
Pins in the pad seem fine, same on the charger.
I just turned it off to see if I could get it to charge from a USB hub on my PC, but it seems not.
This points to the cable being at fault, but with no replacements available I am still stuck with a discharging tablet.
Very Frustrating... I guess I will be Calling Asus support on Monday.
Its a shame Comet is out of stock locally, or I would walk into store for an exchange
bbilko said:
Pins in the pad seem fine, same on the charger.
I just turned it off to see if I could get it to charge from a USB hub on my PC, but it seems not.
This points to the cable being at fault, but with no replacements available I am still stuck with a discharging tablet.
Very Frustrating... I guess I will be Calling Asus support on Monday.
Its a shame Comet is out of stock locally, or I would walk into store for an exchange
Click to expand...
Click to collapse
charging thru a PC usb hub is slow...the ac adapter is rated at 15v 1.2a...and a PC hub is only 5v .5a i think...
Anyone know what the adapters for the other tablets are rated at?
skchan2 said:
charging thru a PC usb hub is slow...the ac adapter is rated at 15v 1.2a...and a PC hub is only 5v .5a i think...
Anyone know what the adapters for the other tablets are rated at?
Click to expand...
Click to collapse
I realise its slow, but I would expect SOMETHING after leaving the TF plugged in for almost an hour turned off!
This might sound ridiculous but unplug the usb cable from the power brick, unplug the power brick from the wall, set them aside....then wait a while (20+ minutes), then come back to it and try to plug it back in.
I had this same exact problem but I did the steps I told you and it began charging again. I'm not sure how or why though.
b1ackplague said:
This might sound ridiculous but unplug the usb cable from the power brick, unplug the power brick from the wall, set them aside....then wait a while (20+ minutes), then come back to it and try to plug it back in.
I had this same exact problem but I did the steps I told you and it began charging again. I'm not sure how or why though.
Click to expand...
Click to collapse
I left it for a while, but I shall try again.
EDIT: On second thoughts, no this isn't the case.
Plugging in the PSU normally turns the tablet on, and currently it isnt doing that.
Bum.
What is your battery percentage at? Anything above 90, and it won't charge until it drops below. Kind of a built in failsafe.
dictionary said:
What is your battery percentage at? Anything above 90, and it won't charge until it drops below. Kind of a built in failsafe.
Click to expand...
Click to collapse
Ah yes, it is above 90%, but I am sure it would show the charging icon?
I can only hope this is a false alarm, I will be less annoyed then..
Nope, won't show the charging icon. What I've done, if you want to ease the paranoia, lol, is hold the power button down and keep holding until the device shuts off completely. (do this with the plug disconnected) .. Now, plug the charger back in to the device. The device should power on, and you should boot up to a charging icon.
If it doesn't start up, then yeah, you may have a faulty charger. Let me know how it goes.
dictionary said:
Nope, won't show the charging icon. What I've done, if you want to ease the paranoia, lol, is hold the power button down and keep holding until the device shuts off completely. (do this with the plug disconnected) .. Now, plug the charger back in to the device. The device should power on, and you should boot up to a charging icon.
If it doesn't start up, then yeah, you may have a faulty charger. Let me know how it goes.
Click to expand...
Click to collapse
Worth a try, but no, nothing...
Then just let it run down passed 90% (like 88-89%) and see if it charges. If not, then yeah, sorry.
dictionary said:
Then just let it run down passed 90% (like 88-89%) and see if it charges. If not, then yeah, sorry.
Click to expand...
Click to collapse
No it does seem to be the PSU, I have used my Desire charger to charge the TF overnight, and got it back to 100%
Looks like I will be calling Asus on Monday
dictionary said:
What is your battery percentage at? Anything above 90, and it won't charge until it drops below. Kind of a built in failsafe.
Click to expand...
Click to collapse
It does on mine.
Little tip for you all... don't leave it charging overnight. It may be a bit late advice for some, but for others it might help them ending up with a useless power adapter. Unplug it when it gets to 100%. Get an app that alerts you with a sound, signaling when the battery is full. Battery monitor widget does this. Also unplug it soon after its done charging. This is assuming you don't care about battery life of course.
If you DO care about it then charging it up to 100% all the time isn't a good way to keep your battery healthy in the first place. Loads of guides on the web for Lithium Ion battery care.
There's obviously a problem with the adapter design, due to the amount of threads talking about this very issue, when people leave them charging all night. Maybe they are overheating, or some other reason. Prevention is better than cure.
stuntdouble said:
It does on mine.
Little tip for you all... don't leave it charging overnight. It may be a bit late advice for some, but for others it might help them ending up with a useless power adapter. Unplug it when it gets to 100%. Get an app that alerts you with a sound, signaling when the battery is full. Battery monitor widget does this. Also unplug it soon after its done charging. This is assuming you don't care about battery life of course.
If you DO care about it then charging it up to 100% all the time isn't a good way to keep your battery healthy in the first place. Loads of guides on the web for Lithium Ion battery care.
There's obviously a problem with the adapter design, due to the amount of threads talking about this very issue, when people leave them charging all night. Maybe they are overheating, or some other reason. Prevention is better than cure.
Click to expand...
Click to collapse
Over heating might well be the issue, I am getting that sweet smell of cooked circuit board from the PSU.
Not meaning it to charge over night will be annoying, I like things ready to go come the AM
bbilko said:
Over heating might well be the issue, I am getting that sweet smell of cooked circuit board from the PSU.
Not meaning it to charge over night will be annoying, I like things ready to go come the AM
Click to expand...
Click to collapse
Yeah I agree it shouldnt happen. Just saying I think it is. Pretty sure there are guidelines and safety features that are applied to all power supplies to make them safe for use in the home, at least there are in the EU, and it seems these ones are in violation of those guidelines, even though they have the CE approved label. If you are smelling something burning/melting its obviously faulty and needs to be replaced.
Well I tried comet for the warrenty and was directed to the asus support line, which is closed today.
How dull.
Sent from my Transformer TF101 using XDA Premium App
bbilko said:
No it does seem to be the PSU, I have used my Desire charger to charge the TF overnight, and got it back to 100%
Click to expand...
Click to collapse
Is using the Desire charger just as slow at using a normal (5V) USB hub?
I'm no engineer but aren't there safeguards built into a charger/battery that is operating normally? ie: put TF on charger overnight, battery draws power till full then stops charging?
I use my TF all day, at night it goes on the charger, at no time does my charger get "hot" to the touch.
Information of PSU model with a known fault here:
http://forum.xda-developers.com/showthread.php?t=1081435
Gidday - This morning I woke up to find my phone had switched itself off during the night while on charge.
Last night I put my phone to charge through USB connected to my PC in sleep mode. I've been charging the phone like this since I got it 3 weeks ago and its been working fine.
When I woke up in the morning I found the phone off and when I gave the power button a short press expecting it to show me the time all I got was a battery charging symbol.
When I went to bed I had the standard "Clock" feature running that comes standard with the Neo so it acts like a bedside clock and I always have the Wifi on when I'm at home.
No other applications were running in the background apart from the normal stuff but I'm quite concerned that the phone turned itself off while I was sleeping because I use the alarm feature to wake me up when I need to go to work and I know these Android phones do not wake themselves up to run the alarm.
Any ideas what could be causing this?
Now this is very funny you say this because this happens to me,,, but I'm convinced I turn it off myself,in my sleep my partner confirms lol
But seriously could of just been a reboot
As long as it don't happen again it should be no great consern ''unless you sleep in for work'' lol
Sent from my Xoom using xda premium
I heard charging like this(from night to morning) is not good for the battery.The owner of the shop where I brought my W595,Neo V specially told me NOT to do this,as he said this can reduce both battery life and phones life.Anyway don't get that much concerned about itself switching off mate after only happening it once.But if can in future don't charge like that.
lol kormatoes ,I on the other hand when ppl call in night sometimes I was told that I just answer it and instead talking keep it beside my pillow thinking it was alarm and go back to sleep xD
Was the phone fully charged when you woke up? If not I would guess something went wrong with the laptop..
I've never left my phone plugged into a laptop for charging, I always use the wall plug overnight.. And don't worry, plugging your phone in every night is not bad for your battery it control's the charge and drops down to 98% when it gets to 100% before charging again.. This trickle effect on a li-ion battery is fine (would have been bad for nicad or nimh tho) and your using a laptop usb which only delivers about 500ma that's a really nice slow (low C) charge rate, li-ion and li-poly batteries love to keep topped up, what they hate is to be discharged to much. (my 2c)
If you're really worried about this (random shutdown) happening on a work day then use the wall charger the phone came with.. Just to eliminate any other factors that might have contributed to it turning off (use the laptop on your days/nights off to try and replicate the fault) would be interesting to figure it out what caused it..
Kiwi
Sent from my MT15i using xda premium
Thanks for your comments guys.
I'm not sure why charging it via usb is going to do it any harm? or was the guy in the shop trying so say that its not good to have the phone plugged into the charger for hours on end once it gets fully charged? either way I've been thinking that charging via usb is better for the battery because its a lower energy input and therefore charges the battery slower/cooler which in turn should make it last longer (just guessing here - no science to back this up)
Then there is the having it plugged in while at 100% - I've noticed that the phone somehow disconnects itself and stops charging the battery when at 100%. I noticed this today when I started my phone after its surprising shutdown = the battery was fully charged (because it had been plugged in all night) and the battery display refused to show me that the phone was plugged in (when it was) so I turned on the flash light feature and blasted some music to drop the %tage down and sure enough as soon as the percentage dropped below 100% the indicators on the phone started to show the batter was charging (both via the lightening bolt in the normal battery icon and also on my battery monitor which tells me if its charging and how much longer it will be charging for).
I'm looking forward to seeing if the phone is still on tomorrow when I get up.
Any more ideas much appreciated - once might not sound like much but if the alarm/phone had the potential to be even the slightest bit unreliable then I'm going to have to go back to the old alarm clock. At least with my Nokia I could even switch the phone off and the alarm would still chime (we've all experienced this with the old school phones) but I notice that android hasn't managed this yet.
kiwiBratwurst said:
Was the phone fully charged when you woke up? If not I would guess something went wrong with the laptop..
I've never left my phone plugged into a laptop for charging, I always use the wall plug overnight.. And don't worry, plugging your phone in every night is not bad for your battery it control's the charge and drops down to 98% when it gets to 100% before charging again.. This trickle effect on a li-ion battery is fine (would have been bad for nicad or nimh tho) and your using a laptop usb which only delivers about 500ma that's a really nice slow (low C) charge rate, li-ion and li-poly batteries love to keep topped up, what they hate is to be discharged to much. (my 2c)
If you're really worried about this (random shutdown) happening on a work day then use the wall charger the phone came with.. Just to eliminate any other factors that might have contributed to it turning off (use the laptop on your days/nights off to try and replicate the fault) would be interesting to figure it out what caused it..
Kiwi
Sent from my MT15i using xda premium
Click to expand...
Click to collapse
Thanks for your thoughts Kiwi (I've only just figured out who this is ) - The laptop was in sleep mode and from what I've experienced the only thing that works when in this mode is the usb ports - the Wifi and the Bluetooth shut down and I'm guessing that the processor mostly shuts down too? guessing here?
But even so what on the computer might cause the phone to crash?
hilfordjames said:
I'm not sure why charging it via usb is going to do it any harm? or was the guy in the shop trying so say that its not good to have the phone plugged into the charger for hours on end once it gets fully charged?
Click to expand...
Click to collapse
Sorry if my earlier post was confusing,he told me its not good to have it plugged into the charger for longer periods of time after its fully charged.I too normally charge it with pc as phone came with one usb cable + charger plug with usb port & usb cable is always attached to my pc.Anyway about that keeping it for the whole night is bad theory I'm not sure if its correct or wrong but I prefer not keeping it plugged in for like 6-7 hours everyday while it only need 2-3 hours maximum to fully charge.
But even so what on the computer might cause the phone to crash?
Click to expand...
Click to collapse
Normally if phone crashes it reboots right ? instead switching off ?
Thilina said:
Sorry if my earlier post was confusing,he told me its not good to have it plugged into the charger for longer periods of time after its fully charged.I too normally charge it with pc as phone came with one usb cable + charger plug with usb port & usb cable is always attached to my pc.Anyway about that keeping it for the whole night is bad theory I'm not sure if its correct or wrong but I prefer not keeping it plugged in for like 6-7 hours everyday while it only need 2-3 hours maximum to fully charge.
Normally if phone crashes it reboots right ? instead switching off ?
Click to expand...
Click to collapse
I've noticed that when you reboot while plugged in, it might just go right into charge mode. Try turning it on, and then plug it in righ thereafter. Likely it will not boot, but go to the charge animation.
Can't try it myself, phone's in for repair
sdk16420 said:
I've noticed that when you reboot while plugged in, it might just go right into charge mode. Try turning it on, and then plug it in righ thereafter. Likely it will not boot, but go to the charge animation.
Can't try it myself, phone's in for repair
Click to expand...
Click to collapse
Hmm interesting theory - but I've tried it and the phone has restarted : (
Probably a good thing but still no closer to finding the solution except I'm wondering if it was because my ROM memory was pretty much full? So in case it was I've moved a few things from System apps to User apps in the hope that the phone wont switch off by itself again.
hilfordjames said:
Hmm interesting theory - but I've tried it and the phone has restarted : (
Probably a good thing but still no closer to finding the solution except I'm wondering if it was because my ROM memory was pretty much full? So in case it was I've moved a few things from System apps to User apps in the hope that the phone wont switch off by itself again.
Click to expand...
Click to collapse
If you're rooted, I can recommend Link2SD.
HilfordJames and I have discussed this in length already so this is more for other people's benefit..
Link to sd can be dangerous, as can forcing apps to sd that don't offer the choice normally, app developers block the option to install to sd for a reason, that is usually because the app accesses services that can become corupt or crash if the app is suddenly ejected from the phone (like when you mount the sd card on the computer) so its best to leave those apps on the internal memory.
The most likely reason for the overnight shutdown would be (as you said) that you had filled your system memory up with user apps.
Sure enough once you've deleted all that bloatware from the system you have heaps of room just begging to be filled in the system partition.. But you gotta leave some room in there (about 60-70mb should be enough)
I think another thing could be if your computer somehow woke up in the middle of the night and accessed (auto mounted) your phones sd card, sounds unlikely but I've had laptops run scheduled updates in the middle of the night when they were supposed to be "asleep" if this happened and you had an application running off sd card that uses phone services (like Wifi, bluetooth etc) this may have crashed the phone.. And as it was plugged into power remained shutdown.. Once again (AFAIK) these apps should be installed on the phone not sd card. (games and similar apps are fine on sd card)
Just a couple of theories, but I think we are on the right track
Kiwi
Sent from my MT15i using xda premium
Yip all good.
Since transferring a lot of the files/apps back to user memory I've not had the phone auto shutoff and I've tested it by leaving it on the CPU at night as well and it seems fine - although I now charge it from the wall charger if I'm working the next day just to be on the safe side.
So last night before I went to sleep, my NT had about 40% battery life left in it. I'm currently running the final alpha build of CM7. I've been experiencing really bad wifi loss issues and have kept the 'Never' option enabled under the wifi sleep policy (thinking that would help hold the connection).
I woke up to find the NT was turned off. Figured that was odd as I was only asleep for about 5hrs. I turned it on and then noticed it got into the OS and then died. I did see the battery icon was red briefly.
I then plugged it into the wall and it was boot looping. I saw the 'n' logo pop up, screen went black, 'n' logo, etc. etc.
After numerous attempts of holding down the power button for 20+ seconds, holding power+vol down for 10 seconds, plugging it with or without an sd card into the wall and computer, nothing is happening.
The computer does see something as I'm hearing the common connected/disconnected tone from the USB port. Now I'm noticing that plugged into the wall, the 'n' on the cable stays orange. It never turns green.
Did it go 'poof' in the night somehow?
[EDIT] Ok after leaving it plugged into the wall for about 15mins, it suddenly turned on but had a google framework FC error. Yeah, not sure what I should do at this point. It appears to be charging...
It's been noted by others that if the power level goes below 15% you mustn't turn the device off if you don't have the original charger nearby. If it dies you need to charge it with the original charger for a bit before it'll power back up.
I assume this means that you can't run it off the cable while you've got a completely dead battery. That kind of stinks but isn't too surprising, a lot of devices are like that.
So does that mean that if the device is <40% of battery I need to plug it in if I won't be around it for a while? Not sure I'm cool with that. Battery life was great all day yesterday but somehow it dropped 40% in under 5hrs while asleep.
I can't really say much as I haven't dealt with it personally. People were talking about it in a couple threads about the NT's charger and unique 12 pin cable.
Here's what I understand from what I've read:
You can run it until it's empty all you like. You'll just need to use the Nook's factory charger (or a compatible 2A charger with bridged D- and D+ pins) AND (this is the important one) the factory USB cable to charge it.
If you run it until it dies you have to charge it for a little while before it'll turn on again, BUT you have to use the original cord and charger. It won't charge off of a regular micro USB cable nor will it work if you're using a 2A or smaller charger that doesn't have the middle two pins bridges (the Apple UBS chargers won't work nor will your PC's USB ports, for example).
The NT will charge, albeit slowly, if connected with a third party cable or USB charger (without the data lines D- and D+ bridged), but not if the device's power has been depleted.
So I suspect something sucked up a lot of juice while you weren't using your NT. Not a huge deal, but definitely annoying. Plug it in for 15 minutes and you can get rolling again.... BUT only if you're using the original charger and cable. Lovely isn't it? It's not a huge problem but it is annoying. I wish you could at least use the device with a dead battery while plugged in.
I just mention the charger/stock cable thing because I'm sure someone will probably see this post in the future and may be having that particular problem resuscitating their NT.
Cool, yeah I don't specifically set out to run it down to zero but since the device is clean with minimal stuff running in the background, it's difficult to know when this might happen again. I assumed I'd wake up with like 20-25% battery left. The framework FC is also something I'm concerned about but maybe it was just a fluke.
Ah well, really do appreciate your input and I'll be sure to keep the stock cable/adapter on hand when I'm on the go.
Battery showed fully charged, I rebooted to do another CWM backup and then when it came back up it showed 84% charged. Lol. And this pic made me laugh even more. Time to get that lady from Poltergeist involved I think...
The Google Framework force close is typical of stock rooted NTs. I don't believe it ever did any harm to anything though. Just that it sometimes appears on reboot.
I'll ask one additional question as to not make another topic since it's related.
Opinions on battery calibration with the NT? That was one of the reasons I didn't charge it last night as I wanted to fully run it down and then fully charge it back up. Does the NT require this with a new rom install? That pic above shows the battery gauge clearly wasn't correct initially.
Your battery is draining overnight because wifi is running the whole time (as you stated in your first post).
Sent from my SCH-I500 using Tapatalk
ckevinwelch said:
Your battery is draining overnight because wifi is running the whole time (as you stated in your first post).
Sent from my SCH-I500 using Tapatalk
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That's what I obviously thought of at first but it didn't drain nearly as much when I was using it throughout the day. The only thing I can think of is maybe the fuel gauge itself was wrong from the start, which refers back to my calibration question.
My GS2 has the sleep policy set to 'Never' as well and only loses maybe 7-8% after being asleep for around 7-8hrs and it certainly uses more juice in sleep due to the cell communication, etc.
I know there are hundreds of threads like this, but I found myself with a strange problem...
My S2 will connect to USB perfectly, will be able to move data, big files like ROMs, even flashed a CF root through Odin, everything ok...
Well, it will not charge, when the USB or wall charger are connected, it will display the power icon, but will not be animated nor charging, keeps draining battery even if connected.
When it hit 5%, it kept playing the low battery/charger connected sounds, like some kind of failed USB connection, which I not believe to be the case...
Already cleaned with isopropyl alcohol the battery , battery and charging port (without alcohol).
Waiting to try it...
Any sugestions? battery seems to charge in other phones
Try another battery and/or replace USB board/port. Regardless of whether you can move data to/from the phone via USB, it very much sounds like the board/port needs replacing. Quick/cheap/easy to do yourself, has been covered here a lot this year - search for threads where KeithRoss39 & TheUnderling have posted on this issue to get the info you need.
MistahBungle said:
Try another battery and/or replace USB board/port. Regardless of whether you can move data to/from the phone via USB, it very much sounds like the board/port needs replacing. Quick/cheap/easy to do yourself, has been covered here a lot this year - search for threads where KeithRoss39 & TheUnderling have posted on this issue to get the info you need.
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Click to collapse
Already switched the usb board (as today), the battery is charging now, but only with the phone turned off, it will stay as before, not charging the battery, already installed a different ROM (using Disaster v10)
I dont think thats the battery... will try to put my hands in another battery and see.
In the meantime, is there anything else I should be trying?
bidomo said:
Already switched the usb board (as today), the battery is charging now, but only with the phone turned off, it will stay as before, not charging the battery, already installed a different ROM (using Disaster v10)
I dont think thats the battery... will try to put my hands in another battery and see.
In the meantime, is there anything else I should be trying?
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Looks like my battery is in no good healt...
also, I have a problem with the microphone, is not getting anything, does not have the rubber protector, and only speaker phone works...
Any workround?
Ok, so I've crawled everywhere for the last few days to try and see if anybody else has had this issue, but alas, nobody has.
So my device was purchased in Nov 2013, out of warrany. No luck there with a replacement.
Last week I was watching a show, low battery, it powered down. No biggie, just plug it in and let it charge. But it refused to do anything at all, even after charging for 24 hours. No power, no screen, nothing. Held the power button. Nothing. No noise, no lights, nothing.
Contacted Tech Support and they sent me one of their 9w chargers and said to try that. Got it, plugged it in overnight, again, nothing. Held the power button for 40 seconds, nothing. Tried it while plugged in, nothing.
Contacted Tech Support again and they said nothing they can do other than offer me $20 off a new device. No thanks.
I plugged the unit into my desktop and it blooped that a new device was connected, and in the device manager I have the "QHSUSB_BULK" device. This is a totally stock, nothing new, not even developer options enabled (when it had power)
Is there anything to be done with the device at this point?
Again, no power, no screen, no lights, nothing.
Unresponsive.
Help?
w34513 said:
...
Is there anything to be done with the device at this point?
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Probably not, sorry.
There is a reason why Android in general pops up request about battery charging 2 times before it shutdown itself. One is about ideal state for charging modern Li-ion battery , which is around 10 - 15 % its capacity, second is about a minimal safe level for Li-ion battery, which is cca 5%, and under this (believe or not) some bad things can happen, including internal storage media corruption while writing something and not enough juice left in the process of shutdown for finishing it...
I don't know for real what happened in your case, but I have seen this type of posts about android shutdown because of no juice left in battery and after charging device was dead in other forums for some other devices...
My first tablet was Asus Transformer tf101, which had extra battery in the keyboard, and manual clearly stated, that its capacity must not drop under 3%, otherwise it can't be recharged properly and must be replaced...
So IMO people risks every time when they ignore this request for charging battery, and I must admit I too let my Apollo shutdown 2 times in last 2 weeks because I was too lazy to connect it to charger... but after this post I will definitely rethink next time...
w34513 said:
Ok, so I've crawled everywhere for the last few days to try and see if anybody else has had this issue, but alas, nobody has.
So my device was purchased in Nov 2013, out of warrany. No luck there with a replacement.
Last week I was watching a show, low battery, it powered down. No biggie, just plug it in and let it charge. But it refused to do anything at all, even after charging for 24 hours. No power, no screen, nothing. Held the power button. Nothing. No noise, no lights, nothing.
Contacted Tech Support and they sent me one of their 9w chargers and said to try that. Got it, plugged it in overnight, again, nothing. Held the power button for 40 seconds, nothing. Tried it while plugged in, nothing.
Contacted Tech Support again and they said nothing they can do other than offer me $20 off a new device. No thanks.
I plugged the unit into my desktop and it blooped that a new device was connected, and in the device manager I have the "QHSUSB_BULK" device. This is a totally stock, nothing new, not even developer options enabled (when it had power)
Is there anything to be done with the device at this point?
Again, no power, no screen, no lights, nothing.
Unresponsive.
Help?
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Click to collapse
Sounds like you have done your homework. Unfortunately, gut tells me you have a defective hw component. Could be the battery, regulator or some other power circuit. If you have a USB3 port (and cable) try plugging into that for awhile. It might just put enough charge on the battery to permit some type of response combined with the higher power output of a USB3 port. In my experience a USB2 port does not provide enough juice to power high draw devices with a crippled battery. It's a long shot a best but if you can get a response and diagnostics confirm it's the battery you could consider replacing that (no easy task) to recover your device.
Another option is to snag an inexpensive USB current meter (examples here and here) to see if the device is actually drawing power while on charge. If the reading is close to zero you likely have a charge circuit problem which can't be easily remedied. A bad battery would still draw some current...just wouldn't hold a charge. Note these gizmos can also be used to identify a bad cable, bad charger or combination of the two for virtually any USB device. You'd be amazed how many crappy cables are out there that severely restrict charge rates. But that's another matter ...
Sorry I couldn't provide a more optimistic response.
So maybe try replacing the battery?
ifixit says they're kinda hard to replace, but for $50 off Amazon it might be worth it vs the $150 they quoted me for a replacement tablet.
I've had a few devices shut down on me like this (I try my hardest not to, but we all fail sometimes) and I've just never run into this issue before.
Davey126 said:
Sorry I couldn't provide a more optimistic response.
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Thanks for the reply. Like I said above, I charged it with their charger, 3 of my own, my USB 3.0 port on my desktop, all with multiple cords. So no luck there. I've kind of been figured it's just EOL for this thing unfortunately and I just don't think I'm gonna bother with it at this point. USB on the desktop recognizes it, but nothing further.
Time to mount it on the wall I guess lol. Thanks for all the responses and confirming what I suspected, it helps to know that others think that my conclusion wasn't premature.