ive been experiencing something really strange since i got my dock two weeks ago......... normally my tf would charge to a 100% no problem and same with the dock........ now even after leaving both of them connected and then charging them over 12 hours........ the tablet first charged to a maximum of 99% then 98% then 97% now 96%, the dock is doing the same thing, and i have charged the tf and dock for over 12 hours repeatedly to make sure that i let the charge trickel in but to no avail,i wiped battery stats and dalvik cache, to no avail......should i be concerned?
Sent from my Transformer TF101 using XDA Premium App
I think it's probably normal for the charger to stop at any point above 95%....happened to mine as well and it hangs around 96%-100%..randomly..
oh right .....well as long as it doesnt drop too low.....i thought there might have been some defect or something. anyone else experiencing the same thing as us 2?
Sent from my Transformer TF101 using XDA Premium App
I just got my dock today and charged it up fully, was all at 100% now tablet stuck at 97% ish, and dock draining slowly. What will happen once the dock goes empty, does it suck battery from the tablet?
Try using the battery until 10% or less. I have gone until 2% then I let it charge. It went back to 100%.
Similar issues were experienced in my laptop and phone. So I let it drain almost completely before charging.
Same thing happens to mine but I dont own the dock. I never seen my tab at 100%
Related
Has anyone else seen this? From 100 to 90% the power just drops almost instantaneously but after 90% its normal.
Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.
Studmf said:
Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.
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Ahh interesting. I thought I was running into an old winmo rom flashing issue where if you flashed under 50% battery life you could never charge the device above that point.
Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App
two_cents said:
Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App
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Hmm i tried and it acted the same way.
Apparently the HTC models act like older phones did back in the day. What HTC needs to do is put something on the phone face itself when new that says "CHARGE FOR 4 HOURS BEFORE INITIAL POWER ON FOR MAXIMUM BATTERY LIFE."
Once you do this once you dont have to keep doing it. I also powered on my phone the minute I got it and activated it without charging it first and I was seeing this issue until I did a power off charge. The phone runs from 6am to 11pm without an additional charge cycle in the day and that is a huge improvement for me. I was charging the phone twice to three times daily.
do you guys leave your tf plugged in at all times?
Sent from my Transformer TF101 using XDA Premium App
Nope, I unplug it when its fully charged and only charge when there is less than 10% left.
I ordered a USB 3.0 extension cable. One of the reviewers for it said it worked perfectly for his TF. One of the most annoying things I found was not being able to charge from the computer while I used the device. The plug was way too short for the wall. This one is awesome and very cheap. Here is a link:
6ft USB 3.0 A Male to A Female Extension 28/24AWG Cable (Gold Plated)
Quotes from the reviews of it:
"Powers and charges the ASUS Transformer tablet when used with the ASUS Transformer power adapter. Also works as data cable when connected to PC."
"i bought 5 of these for random usb charging extension for mainly tablets - ipad, transformer, galaxy tab. these work perfectly fine and charge at full speed."
It's better for Lithium-Ion batteries to drain little and top-up as often as you can so I plug it in whenever I'm not using it.
frosty5689 said:
It's better for Lithium-Ion batteries to drain little and top-up as often as you can so I plug it in whenever I'm not using it.
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I hear a lot of back and forth about this. Do you have a source for this info? (Not doubting you, just, like I said, I constantly hear people changing their minds on this)
EDIT: Nevermind, maybe I am thinking way back or something. I am finding most info points to "Don't deep drain if you don't have to"... just google lithium ion battery care if you thought the same as me.
I'm curious, i just got my transformer today, in the instructions it says to charge it for 8 hours. But I had full charge after 3 hours. Do I still need to charge it for another 5 hours?
--Jak
wakjagner said:
I'm curious, i just got my transformer today, in the instructions it says to charge it for 8 hours. But I had full charge after 3 hours. Do I still need to charge it for another 5 hours?
--Jak
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yes you should, the battery needs overcharged for premiere usage. but after that don't overcharging your battery in daily usage which the OP is asking.
I charge mine a few hours at night, but unplug it overnight. Since I have the dock, I don't even come close to running out of battery during the day so I leave it uncharged until night time again.
In this case, my Tablet is always 100% and my dock battery drains and gets recharged. I have no idea what my battery life will be later on hehe.
Lithium ion are good for about 300 to 400 charge cycles...usually closer to 300. It is a good idea to charge fully and then simply let it run down. ...i am a tech at a lathe national company. We see trouble tickets from users about batteries on laptops frequently. If the device sits plugged in all the time your battery will last a little over a year before it's about 50% effective. I have no source for my data, just experience.
Hope that helps
Sent from my ADR6300 using XDA App
*sigh* lathe = local
Sent from my ADR6300 using XDA App
My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?
androidmonkey said:
My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?
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is it rooted? maybe wiping batter stats will fix it.
Its not rooted.
Fufu_the_Great said:
is it rooted? maybe wiping batter stats will fix it.
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Click to collapse
Not likely. Battery stats has absolutely nothing to do with reported charge level. Wiping it will have the same effect as clearing his market search history... None at all.
Sent from my Nexus 7 using Tapatalk 2
Are you using the charger that came with the Nexus 7? 'Cause the same thing happened to me last month. I used a charger I got from ebay, plugged it in, charged all day, came back, unplugged it, turned on & said it was in the red!
Same thing happened to me shortly after I had the N7.... and that was with using the supplied mains charger and cable.
All I did was leave it alone for a further hour and when I then went back to check the screen it had jumped all of 13%.
I was tempted to return the N7 but as it was night and I couldn't return it I left it on charge overnight...... The following morning it was 100% charged.
Since then it's been charged dozen's of times and not once been a problem since (says he touching wood).
My problem is that it wont show that its charging even tho it is. Tried all chargers i have and even the stock one is same. Was going to return it but all the horror stories I've heard i decided not going to bother. Chances are i get a worse unit back. Personally it looks like the connector is not going all the way in. I am going to shave some of the plastic off and see if that helps. Anyway I think Google needs better quality control at Asus and even at Samsung, i remember how my Gnex was packaged.
Sent from my SAMSUNG-SGH-I747 using xda premium
im running aokp JB build 2 and everytime i turn it on, the little battery icon says for example "54%" and on the lock screen it says "100%"
kinda strange. I was about to ask if it was rooted also, but someone did that before me, so im lost for words
Hello,
I noticed some crazy things happening to my N4 during charging yesterday.
It was at about 20% and I had a few hours to charge it before going out for the night. I charged it to about 50% and then stepped out of the house.
After I came home at night, I plugged it in like I do before I go to bed. I woke up after 5-6 hours to use the bathroom and checked my phone. It was stuck at 76% charging. I knew something was wrong because it shouldn't of taken 5-6 hours to get to 76%. I opened my battery settings and noticed something very weird happening.
The indicator was saying "76% Charging" and then "76% Not Charging" and it was alternating between the 2 really fast. It was as if I was taking the plug out of the wall and putting it back in REALLY fast. I checked the outlet and it was fine, it was plugged in just fine (I've been using the same outlet fine for a week)
I restarted the phone and suddenly the battery jumped to 86%. WTF?
I kept it charging and went back to sleep. Woke up few hours later and it got stuck at 76% again! And it sat there bouncing back and forth like before.
I restarted the phone a FINAL time and then finally it fully charged to 100%.
WTF is going on?
Seems like your battery indicator might have been messing up, reboots fix this
Sent from my Nexus 4 using xda premium
Yeah sounds like it but really odd how it got stuck at 76%.
When it hit 86% it just stayed consistently charging but the % wasn't increasing. Looking at the battery graph from last night it seemed to be at 86% for at least a few hours.
Sent from my Nexus 4 using xda app-developers app
I would leave it charging for such a period that it would be at 100% if it was at all normal.
Then reset battery stats, let it fully discharge through use, recharge, and see how it goes.
Ranguvar said:
I would leave it charging for such a period that it would be at 100% if it was at all normal.
Then reset battery stats, let it fully discharge through use, recharge, and see how it goes.
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Reset battery stats without root permissions? Don't think it's possible, right?
A few others experiencing this, here's one other thread, there are more mentions of it elsewhere. http://forum.xda-developers.com/showthread.php?t=2012885
I submitted a report here: http://code.google.com/p/android/is...4"&colspec=ID Type Status Owner Summary Stars
CMNein said:
A few others experiencing this, here's one other thread, there are more mentions of it elsewhere. http://forum.xda-developers.com/showthread.php?t=2012885
I submitted a report here: http://code.google.com/p/android/is...4"&colspec=ID Type Status Owner Summary Stars
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Thank you for the info!
mortal300 said:
Thank you for the info!
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NP. I'm trying to get data on Li-Po batteries that doesn't originate from an RC plane/car/heli website, turns out it's really, really hard
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
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this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
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It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
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Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Click to expand...
Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
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millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
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I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
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No, I do not have a QI charger. I was always using a USB wall charger.