I'm running the latest build of cm7 (7.02 I think). I've noticed even though the indicator on the included charging cord turns green when the nook reaches 100% under menu and status it says my nook is still charging. I've tried other USB cords with the same result. My optimus v running cm7 indicates its not charging after reaching 100%. Is this normal and is the nook still in fact charging after its reached a full charge?
In which place do U see that is still charging?
When the cable sign goes to green it means its full.
It says it under settings, about tablet, status. Also if you have the elixir app it says its charging. I'm just wondering if its a bad idea to leave it plugged in after its charged if it indicates its still charging.
Also something that may be of note is I'm running the 4/24 test oc kernel. I'm not sure if the kernel handles the device charging or not.
If the AC adapter cools off, the NC has stopped quick charging. My charger gets warm during quick charge, but I'm not sure if it stays in quick charge mode until the NC is 100%. Probably not. Probably switches to a lower charge rate when near 100%. I am pretty sure that the battery's integrated chip controls charging & I don't suspect the the OS can interfere. The battery is designed to protect itself from overcharging.
Cheers,
kev
Thanks for the info. I do see the battery temperature drops some after reaching full.
Related
hi,
pls. i have problem with charge battery with usb.
Sometimes it Works and sometimes it stops working, led blink orange, green, orange, green and battery status is still on the same level.
I have always allowed charge with usb – in menu is it checked.
Strange is, that it charge till now (and battery status is about 20% better – during this led was only orange), and in this time its blink again and doesnt charge (30 min. still the same level and led blink orange-green). Because it sometimes works i think the cable is OK or?
thx for help
Any suggestions?
I have the same problem
The charging is stop to 66% and i have use the battery Debug tool and also measure the same....
Strange thing
USB ports are rated sat 500mAh nominal and if you have a number in use then the available current can drop below the level needed to charge the phone and then the circuits can suck out the power from your battery draining it further.
Charge from wall socket and then from USB but don't do it at lower levels as you will continue to get the problem.
The knock on effect is that you may have damaged your battery by the charging process you have been subjecting it to.
Put it on charge and keep it on for as long as possible and then whenever you can to keep it at max capacity for when needed for longer periods.
I dont know what caused this to happen, because i havent flashed anything new on my phone or made any changes for like a week now, but today when i got home from school and plugged in my phone, a few seconds later i get the messaged telling me that it is fully charged, even though the battery on the status bar says it is at 20%. i tried wiping the battery stats in cwm but it didnt fix it.
Possibly dirty usb port/connector. Otherwise, turn the phone off to charge it. If it still doesn't charge right, it could be that the battery went bad.
oh lol i cant believe i didnt realize this. i just got a new keyboard and i had my phone charger plugged into the usb port that is on the back of they keyboard, i shouldve known it cant charge off of that i was being stupid hah. plugged it into the computer and it works fine.
thefunkbot said:
oh lol i cant believe i didnt realize this. i just got a new keyboard and i had my phone charger plugged into the usb port that is on the back of they keyboard, i shouldve known it cant charge off of that i was being stupid hah. plugged it into the computer and it works fine.
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The phone will say it is charged when you plug it into a USB port with too low of a current rating.
I do not know what the cutoff threshold is, however I have a variety of USB ports and adapters that I charge my phone off of and some of them work great, but a couple of them have extremely low current ratings and the phone just says "charged" because it is not seeing enough power go into the battery.
This might be considered a bug, if there was a way for the hardware / charging drivers to measure the strength of the USB port the phone is attached to instead of solely looking at the current flowing into the battery.
Hrm. Weird that it would report charged when it doesn't get enough current to properly charge.
On a related note - I would also recommend doing a deep drain / charge cycle about once per month, to calibrate the battery charge sensor.
- Charge your phone to 100%.
- Then discharge it down to 0%.
- Then charge it back up to 100% via the OS.
- Turn the phone off, and keep it plugged in to the charger. A green battery icon will appear, and indicate when the battery is fully charged to 100%.
- Reboot the phone into recovery, and wipe battery stats.
Doing this about once per month for any Li-Ion battery will help calibrate the battery charge sensors on the device, giving you more accurate battery charge stats.
I've come across a problem using Rack's dualboot CM9. If the Nook Color's been running and the battery has run down, connecting plugging in the stock cable + charger results in a green light on the cable and the Nook not charging. After playing around for a bit I figured out that if I reboot it or keep the Nook off it will charge fine. If I reboot and charge, however, the battery percent indicator does not update until after I unplug the charger. If I try to charge it again after unplugging, the light stays green and refuses to charge as before, even though the battery is not at 100%.
I wanted to rule out this being a problem with the charger first, and it seems that way to me but my knowledge about the inner workings of the Nook are limited. Any help is appreciated!
I have the same problem yesterday, and I just rebooted and work well now, don't know what's wrong with it.
I'm on the latest cm nightly,
I always let my tablet die before charging but this time something odd happened. When I would plug it in the white battery that shows its charging would come on then turn off. If I unplugged and plugged in again the exact same thing would happen.
While plugged in I would try booting up. It would get to the lock screen then power down because it had zero percent charge.
I figured out if I just kept unplugging it and plugging it in again and again after the the screen turned off while the white battery was showing it would charge some, boot and stay on charging correctly.
This is the first time this has happened....
Sent from my Nexus 7 using xda app-developers app
Sort of reading between the lines here, and I've only had my N7 for about a month now...
... but mine has never shown the battery display continuously when it is shut off but chanrging on the AC adapter. It comes on for a little while, and then shuts off - but the unit is still charging so far as I know.
Mine was sitting at 59% right now, so I shut it down, waited 30 seconds, and plugged it into the charger. The black and white screen shows up, changes once or twice, and the screen goes dark after about 13 seconds.
I don't take that to mean that it is not charging - it takes some juice to keep the screen lit, so the battery will charge faster if the screen is not lit.
I guess I usually leave it booted while charging, but I can certainly shut it off and verify that it is indeed charging without showing something on the display.
I think it is a bad idea to run your battery all the way down. Li-Polymer batteries do not exhibit memory from partial charging... but they DO have a safety circuit that disables charging if the battery voltage goes too low. You are not gaining anything by running it all the way down, but are risking the possibility that the safety circuit will flip and permanently prevent the battery from charging. (The low-voltage trip circuit is there to prevent chargers from attempting to charge a battery that has a short - that would be a fire hazard).
cheers
[ Edit ] I powered my N7 off at 50% battery, plugged it in & let it sit for 40min, and then booted it - charge now at 74%. The charging indication on the screen was only on for the first 15 sec. Dunno if you are saying something different - but I don't think the charging indication is supposed to stay continuously on while charging. Too bad the N7 doesn't have a small LED for this purpose.
bftb0 said:
Sort of reading between the lines here, and I've only had my N7 for about a month now...
... but mine has never shown the battery display continuously when it is shut off but chanrging on the AC adapter. It comes on for a little while, and then shuts off - but the unit is still charging so far as I know.
Mine was sitting at 59% right now, so I shut it down, waited 30 seconds, and plugged it into the charger. The black and white screen shows up, changes once or twice, and the screen goes dark after about 13 seconds.
I don't take that to mean that it is not charging - it takes some juice to keep the screen lit, so the battery will charge faster if the screen is not lit.
I guess I usually leave it booted while charging, but I can certainly shut it off and verify that it is indeed charging without showing something on the display.
I think it is a bad idea to run your battery all the way down. Li-Polymer batteries do not exhibit memory from partial charging... but they DO have a safety circuit that disables charging if the battery voltage goes too low. You are not gaining anything by running it all the way down, but are risking the possibility that the safety circuit will flip and permanently prevent the battery from charging. (The low-voltage trip circuit is there to prevent chargers from attempting to charge a battery that has a short - that would be a fire hazard).
cheers
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Hm. I remember the screen always staying on when charging when powered off. But that could be just bad memory.
I still don't understand why it would power down after it booted up connected to my charger. (this is after leaving it plugged in for about 5 minutes turned off)
Sent from my EVO using xda app-developers app
All about charging Li-ion batteries. Li-ions are different than 'regular' batteries. Full changes and discharges is not the best for your battery.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Sent from my N7 using XDA Premium
Dirty AOKP 3.5 <&> m-kernel+ a35 (t11)
ezas said:
All about charging Li-ion batteries. Li-ions are different than 'regular' batteries. Full changes and discharges is not the best for your battery.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Sent from my N7 using XDA Premium
Dirty AOKP 3.5 <&> m-kernel+ a35 (t11)
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pretty much all modern electronics don't allow a full charge or discharge.
I have fast charging enabled. I forgot to charge my phone last night and put it on the adaptive fast charger this morning at 0809. It was at 3% when it started. It's 0958, and it's at 22%. The phone has been power on during this time, but it should be faster than this. The setting for fast charging is checked.
Is there an indicator letting you know fast charging is engaged? I thought he gave a notification when fast charging is on. I know it worked once, and I saw one.
That strange
It only take 30 mins to charge 50 percent
Make sure you turn off all service and turn on power saving or shut down your phone
When I plug my note 4 in to charge a notification shows saying fast charge mode enabled (or something along those lines)
And it appears to charge really quick, I can't be exact on time, but my fine was down to 15% last night before I put it on charge, must have been about 15 mins and it was about 35%
Once I think it charged 20% to full in about 50 mins
martytarty said:
When I plug my note 4 in to charge a notification shows saying fast charge mode enabled (or something along those lines)
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That's what I thought. I thought I was imagining things when it didn't appear or maybe it only appears upon first use. I even thought maybe using Nova was some how suppressing the message.
Given you response, I thought maybe there is something wrong with the power in the computer room, so I took it to the kitchen. Then, the status message showed saying fast charging is on. Weird. So, I went back to the computer room and plugged it in. Now the message is starting to appear.
I guess the adapter glitched and was stuck in lower power mode. Not sure. Any way. Thanks for confirming the status message. It seems to be working now.
While my charger seems to work fine. I have noticed it wont pull more than 1000 ma at any given time. I was under the impression that when my battery is below 50% i should see fast charging at a rate over 1000 ma? I get 1000 ma off any decent tablet type charger, including over 50%. Yes fast charging is enabled and detected when the phone is connected to the fast charger.
Anyone else seeing this? Using "Galaxy Charging Rate lite" from the app store. Is there a better app that you guys like?
UPDATE: on a 2A 5v charger I will pull down average 1800ma when the screen is off, then it drops down as the screen is off. So, more testing is needed on the fast charger, I think I need a application that will log the ma draw at intervals to see what it pulls during "fast charge mode" with battery < 50% on the samsung charger.
Fast charging mode only works with screen off!
Charging at 9 Volt and around 1000ma
With screen on the fast charging mode goes off an charging goes to normal mode at 5 Volt and up to 1800ma.
Gesendet von meinem SM-N910F mit Tapatalk
I'm sure I read somewhere on XDA it also only works from 0 - 50%.
Going from my own experience, when I plug it in, I definitely see the "fast charging enabled" message appear in my notification bar.
However it's anything but fast. Mine has never charged faster than average speed that I have noticed, but then I rarely dip below 50% if I can help it, so that might be why.
Last night I put it on charge at 1am (at 59%), came back at 01:48 and it was on %93. Is that good? You tell me. It doesn't seem it. Perhaps my expectations are too high.
One thing I was always curious about is would it matter if you use an extension lead as opposed to plugging it directly into the mains. Not sure how much voltage it is able to draw though an extersion lead, but as must of them are supposed to be up to 240 volts, I'm guessing that wouldn't make a difference.
kamiller42 said:
I have fast charging enabled. I forgot to charge my phone last night and put it on the adaptive fast charger this morning at 0809. It was at 3% when it started. It's 0958, and it's at 22%. The phone has been power on during this time, but it should be faster than this. The setting for fast charging is checked.
Is there an indicator letting you know fast charging is engaged? I thought he gave a notification when fast charging is on. I know it worked once, and I saw one.
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Click to collapse
It says fast charging and there is this little lighting bolt indicating fast charging yes it works better with screen off
buell47 said:
Fast charging mode only works with screen off!
Charging at 9 Volt and around 1000ma
With screen on the fast charging mode goes off an charging goes to normal mode at 5 Volt and up to 1800ma.
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Are you sure, I go from 5% to full in around 80 minutes with device on, is yours faster switched off?
On my Verizon Note 4 phone running Android 5.0.1, if I go to settings/battery, there is a setting for Fast Charging which you can enable if it is not already. Just below that, there is a status message that when the phone is plugged in will tell you what kind of charging you are doing. I just plugged it in with an Adaptive Charging unit and the status said "97% Adaptive Charging" indicating my phone was 97% charged and was charging using the adaptive (fast) charging. When I unplugged it and plugged it back in with a non-adaptive charger, the status changed to say "97% - Charging (AC)" indicating it was charging but not "fast" charging.
prophet42 said:
I'm sure I read somewhere on XDA it also only works from 0 - 50%.
Going from my own experience, when I plug it in, I definitely see the "fast charging enabled" message appear in my notification bar.
However it's anything but fast. Mine has never charged faster than average speed that I have noticed, but then I rarely dip below 50% if I can help it, so that might be why.
Last night I put it on charge at 1am (at 59%), came back at 01:48 and it was on %93. Is that good? You tell me. It doesn't seem it. Perhaps my expectations are too high.
One thing I was always curious about is would it matter if you use an extension lead as opposed to plugging it directly into the mains. Not sure how much voltage it is able to draw though an extersion lead, but as must of them are supposed to be up to 240 volts, I'm guessing that wouldn't make a difference.
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If your USB adapter is plugged into an AC outlet or a long AC extension cord that is plugged into the AC outlet it makes no difference. However if you were talking about a USB extension that plugs into the adapter and extend the length of the DC USB cord that will make a major difference.