First of all, my Tab 2 7.0 takes almost seven hours for a complete charge. I connect the device's USB cable to a no-name USB adapter or an Alcatel USB adapter. I can succesfully charge my device, but it takes so long!!!!! I'm tired of waiting so many hours. So, today I read that for right charging, the battery logo must show a thunder, not a red X. Everytime that I charge my device, I see the red X. But today, somehow, I saw only the thunder when I plugged it. And then, after two hours, my device was fully charged. So, I played a game about 10-15 minutes and when I pressed exit, I saw that my battery was at 60. Right now, the moment I'm writing this post, the battery is at 28%!!!!!!!!! Unbelievable!!! It's almost 20 minutes since then, and the battery has fallen so much. I appreciate help from everyone. Thanks for helping.
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Few recommended tips:
1.Off your GPS, WIFI, DATA CONNECTION and BLUETOOTH when not in use. ( they are battery suckers)
2.Use original Samsung charger to charge your tab.
3.Watch your apps which consumes much processor and Ram, after that if they are not important just install them.
4.See your screen brightness, try to increase in daylight and decrease in nights.
5.Use power save option in your tab.
6.Try to charge your tab in switch off mode.
7.While charging don't do task, let it be only charge.
8. Charge only once a day completely without interrupt, rather than always keep on charging for few minutes and then few minutes and so on.. ( You will loose its original capability if you continue doing charging)
Apply all this and you will be charmed
Good luck.
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Related
My 727 (AT&T) is rooted stock rom. The battery indicator gets 'stuck' a lot of the time. It happens in both a widget and the default battery indicator in the status line.. They will both show 100% and I know full well that they CAN'T be at 100% after sitting around all afternoon off the charger. I restart the phone and immediately it drops to 42% ...
Anybody else seen an issue like this?
A lot all over. Do a search
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what i suggest you do is calibrate the battery.
1 plug it in and charge it to 100%
2 turn off the phone and charge it until it says 100%
3 unplug and turn it on and leave it for 3min.
4 turn it off and plug it in and let it sit until it says 100% again
5 repeat step 3
6 unplug turn on the phone and use it until it hits 0% and turns off
7 plug in the phone and let it charge to 100%
now use as normal and after a few days your battery will read more accuratley and more importantly, will last longer. keep in mind your battery does lie to you but just use the phone and you'll start getting more out of it.
moving forward, charge whenever you can. Lithium ion batteries will last longer if they're charged often (like at 60%-40%).
designfears said:
what i suggest you do is calibrate the battery.
1 plug it in and charge it to 100%
2 turn off the phone and charge it until it says 100%
3 unplug and turn it on and leave it for 3min.
4 turn it off and plug it in and let it sit until it says 100% again
5 repeat step 3
6 unplug turn on the phone and use it until it hits 0% and turns off
7 plug in the phone and let it charge to 100%
now use as normal and after a few days your battery will read more accuratley and more importantly, will last longer. keep in mind your battery does lie to you but just use the phone and you'll start getting more out of it.
moving forward, charge whenever you can. Lithium ion batteries will last longer if they're charged often (like at 60%-40%).
Click to expand...
Click to collapse
Yeah, I even downloaded the utility that removes the battery life file, and creates a new one. I guess I need to try one of these procedures again.. I honestly think it is more to do with a bad application, no matter what the battery life meter should not 'hang', and if it does for more than a few minutes, then it should be able to recover by forcing a restart of the app... *sigh*...
This is a common issue with this phone. Look up "battery stuck at 100%" in Google and you'll find quite a few results. Supposedly it's an issue with certain chargers not giving out proper levels so it trips out some indicator chips in the battery and/or phone.
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Just reboot your phone and use the stock charger and cable from now on.
I had this issue with the rooted kernel (can't remember which one) but after downloading "battery calibration" from the market and following the in-app instructions the problem was solved.
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yeah battery calibration app on market worked for me as well
I find this tablets charging time so annoying I'm coming from a zoom with charged so fast compared to my note
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Not trying to sound mean, but what's the point to the thread? Is it a question asking how to improve charging times?
BTW, I have a Xoom and I think it's just that it charges a lot faster due to the special charging port.
It will charge much faster if you connect it to 220 volt power sources, rather than 110.
Well I wanted to point out that it is an annoying factor for people to think about when considering buying the tablet but I understand your point
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Ummm... wall voltage won't affect it. The device only takes in 5v regardless of the where you plug the charger.
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Is it just me or do you guys think its slow charging
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up to 90% it seems pretty decent. it's that last 10 that seems to take forever. I think the last time I charged it I went from 30 to 90 in 2hrs then the last 10 took another hour.
I ran my note into the ground today and then started a stop watch to see how long it would take to fully charge it. 4.5 hours!!!!
Mine takes way too long to charge also!!
Charging a battery faster leads to more heat which reduces the life of the battery. A very high capacity battery will take longer to charge, all else being equal.
They could have sped up charging by using a non-standard supply voltage/current from the charging cable (like ASUS Transformers, which uses 15v instead of 5v) and thus charging the battery faster. But it would have just got a bit hotter which is not good for the battery.
The battery stores many times more energy than a smartphone battery, yet it only takes about twice as long to charge. I think that's pretty decent.
Given the battery's capacity (7000+mah) and the charge rate (around 2A) I'd say the charge time is right around what I'd expect.
I found the charge a bit slow aswell, but the battery last so long that it balances things out for me, i was disapointed at first until i realised how well the battery performs, regardless what apps i used.
Yeah, Im not too worried about the 4.5hour charging time, my battery lasts me a few days and I can always plug it in before bed and wake up to a fully charged tablet.
I use my tablet during the day and before I go to bed I put it on charge and it's full in the morning. Do some people use their tablet so much in the morning it's out of juice by the afternoon? Give your fingers a rest. My battery lasts me usually all day. Even with looking at YouTube etc.
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Slow charging after last firmware update
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
My galaxy note 2 charges faster than my note 10.1. But I have no problem with it.
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I just bought my note yesterday, and I have to admit I was so surprised when I charged my note. It took 4hr to go from 7% to 89%. My previous Asus transformer tf300 can go from 0% to full charged in 2 hrs.( Not really big deal but it will be better if Samsung includes high voltage wall charger .
Sent from my HTC One X using Tapatalk 2
Techjourney said:
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
Click to expand...
Click to collapse
It sounds like you may have charged with your note 10.1 turned off.
The note 10.1 like many other tablets needs the tablet to be on while charging so the tablet can regular the rate of charge.
My Note 10.1 charges much faster turned on with WiFi, Sync and GPS disabled.
Mine goes from 25% to 100% in about 3.5 hrs.
from 90% to 100% takes about 45 minutes.
.
The-Captain said:
BTW, I have a Xoom and I think it's just that it charges a lot faster due to the special charging port.
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Click to collapse
So do I (hello, fellow convert! ) and the real reason the Xoom charges faster isn't the port, it's 'cause the charger is 18W and is of a higher voltage (12v/1.5A vs. our 5v/2.1A). (I guess it could be argued that they had to go to a different port to not violate the PDMI spec the Samsung units use, though.)
---------- Post added at 10:58 AM ---------- Previous post was at 10:56 AM ----------
DroidHaxxor said:
It will charge much faster if you connect it to 220 volt power sources, rather than 110.
Click to expand...
Click to collapse
You're being funny, I hope - our charger (just like any other charger released in the last decade) is a Universal Charger (100-240V/50-60Hz) so in any case the output voltage and current is the same no matter where in the world you plug it in.
---------- Post added at 11:04 AM ---------- Previous post was at 10:58 AM ----------
kkretch said:
The note 10.1 like many other tablets needs the tablet to be on while charging so the tablet can regular the rate of charge
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Click to collapse
That's not really true, though, as our tablet is in fact on when you're charging it- if you tap the power button when it's charging in the "off" state, you'll see that battery animation, and that's in fact a fully-running kernel but instead of running "Android" it's a special run mode more like a Recovery. The kernel is in fact running and alive.
FWIW my tablet charges far faster when off vs on, as there's far less simultaneous drain on the battery. Not sure what's going on with yours.
Back to normal
Techjourney said:
When I went to bed last night I had 19% power left. Like I normally do, connected my Note to charge overnight. Woke up 7 hours later to find that it had only charged up to 49%. Within 5 hours from a depleted battery, I usually have a full charge. Any thoughts as to why this is the case?
Click to expand...
Click to collapse
I hadn't completely shutdown my tablet since the update last week. I did so yesterday and now charging times seem to be back to normal. Something new from the update I noticed, when batery gets somewhere around 20% left, the battery indicator changes from green to yellow.
My tablet gets about 10 hours on battery, or more if im just reading the web. The most intensive app I run is candy crush and s-note.
That being said it seems to charge quickly, in about 3 hours. My complaint is the short charging cable it shipped with.
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So I'm starting to remember how weird the charging of Note 10.1 is. I left it chargong for a couple hours and it barely charged, course it was on.
Do people "Power off" there notes before they charge it, or just plug it in and walk away?
Is there an app or some setting to auto "hibernate" or even shut off when it gets plugged in and not used? Just seems like an annoying habit to have to power it off regularly.
Note take a long long time to charge 5 - 7 hours for a full charge.
I always care mine while on, usually wifi and it charges from 20% to full in about 5 hours using AC. If you're charging via USB and it's powered on it will barely charge (its charging at 1/4 the current).
If you're using AC and it's still taking that long, you must have a battery hungry app running, try killing a) apps before you charge.
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mine usually takes 5-6 hours to get fully recharged from 15-20%
I usually just leave on in the night. Wake up and it's fully charged.
Deep Grey 16GB N8013
any "speed charger" option? 6hr sounds ridiculous, particular if it's used heavily on the go ...
You're talking about 7000mah of raw power. So this takes some time to charge...this is just plain physics
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You may be able to charge faster, I know there's a fix for the SGS3 but faster charging causes more heat which will kill your battery VERY quickly...
Unlike the SGS3 you can't just get a replacement battery and swap out easily... Slower charging will maximise your batteries life....
Yep, forget about charging quickly. The battery is high capacity so it should take maximum 5 hours. It may charge faster with a different adapter but that will shorten your battery life in the long run. If you want, you can buy a battery pack type portable charger I guess...
mailxd said:
any "speed charger" option? 6hr sounds ridiculous, particular if it's used heavily on the go ...
Click to expand...
Click to collapse
As everyone else has mentioned. Charge it at night.
Heard my tab dying from across the room so I went and got it to charge it and it won't bring up the charging animation. It also will not power on while plugged in or unplugged. It still has some remaining power because I can get it to boot into Odin mode but that's it. PC will recognize it in ODIN mode but no visible signs of charging.I am rooted on stock everything else besides CWM. I have left it on in ODIN mode unplugged to try and drain the battery 100% to see if it will charge from dead but its been 10 minutes already so I'm not sure how long that will take. No charging via original charger, PC, generic charger, Galaxy S3 charger, iPad charger, etc...
Try put your wall charger in and leave it for at least 15 mins..
then long hold the power button for at least 15 secs..
this will wake it from deep sleep.you should see the charger icon flashing then can power again and turn it on.If the answer is no sounds like needs to be repaired.ive had this before mine went into deep sleep and i thought it died but came back.
Left it plugged in for 7 hours and it won't do anything now...
EDIT I'm gonna hope it s the battery. I ordered a new one from Samsung today, we'll see when it gets here. said 10-20 days. It seemed to me that the battery life was very short anyways when I got it secondhand. I could go like 5 days or so with my transformer as opposed to a day or so with this tab.
Ok, so I got the new battery and installed it. tab booted right up with 40% battery life. I shut it off and plugged it into my PC to charge as my oem charger is broken and I'm waiting for my new one in the mail. It (finally) charged to 99%. I let it drain completely so as to calibrate the battery and now it won't charge off the PC USB again...
Hit it with a TWO AMP SAMSUNG A/C charger. ie. SGS4 (Sorry for shouting). Max charging A/C rate (from memory) it's actually 1.5 A. Edit : here it is....
https://github.com/UpInTheAir/P6800...mmit/064a3f7de67380c997e21f9a899a5d4996eb80c4
I hope you never deplete the battery to zero again.....
Although there are "protection" circuit to hopefully prevent battery damage, deleting to zero can still do this. There is no memory effect in modern device batteries, but a large (uninterrupted) charge cycle will help with calibrating your battery. But to be always on the "safe side", not from zero.
Depleting to zero might not be the only cause, but hope using a better A.C.charger (that your tab recognises and allows full input) will help you. some chargers will supply the full charge current, but the tab won't accept it.
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SumCanadianGuy said:
Ok, so I got the new battery and installed it. tab booted right up with 40% battery life. I shut it off and plugged it into my PC to charge as my oem charger is broken and I'm waiting for my new one in the mail. It (finally) charged to 99%. I let it drain completely so as to calibrate the battery and now it won't charge off the PC USB again...
Click to expand...
Click to collapse
I found that if it goes flat it wont charge off USB, you need to charge it from the wall charger, like UpInTheAir said, not enough amp off the USB ones
I fiddled around with my charger and removed the connector that plugs into the wall and plugged a cable into it (prong was broken off my charger) and it charges fine now. Thanks for all of your time guys, looks like it should be OK now. Still waiting for a new oem charger in the mail.
Hi guys I fear my battery is byond the point of no return as tab is completely lifeless and not even recognised by pc, no charging symbol when plugged in to wall socket.
My question is there a test I can carry out before purchasing a new battery? Any help appreciated.
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gingerdude said:
Hi guys I fear my battery is byond the point of no return as tab is completely lifeless and not even recognised by pc, no charging symbol when plugged in to wall socket.
My question is there a test I can carry out before purchasing a new battery? Any help appreciated.
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Click to expand...
Click to collapse
Check your device socket and charger connections for physical damage.
Try as I suggested in my previous post, then leave it connected for a while before checking.
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Thanks for the reply, the charger is ok as it charges my note 10.1. Someone mentioned a few posts back about opening the tab and charging the battery manually, im able to open the case but don't know how to charge the battery manually. Can anyone give me a simple explanation of how to do this.
Regards, steve
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gingerdude said:
Thanks for the reply, the charger is ok as it charges my note 10.1. Someone mentioned a few posts back about opening the tab and charging the battery manually, im able to open the case but don't know how to charge the battery manually. Can anyone give me a simple explanation of how to do this.
Regards, steve
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Click to expand...
Click to collapse
No problem, but I mentioned a TWO amp charger...... Give it a good "kick start"
So how were the sockets?
There might be some useful info here:
http://forum.xda-developers.com/showthread.php?t=2303902
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UpInTheAir said:
No problem, but I mentioned a TWO amp charger...... Give it a good "kick start"
So how were the sockets?
There might be some useful info here:
http://forum.xda-developers.com/showthread.php?t=2303902
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Click to expand...
Click to collapse
Thanks for the guide , I will study it when I get back from work but the internal connector looks fine. I did forget one thing that maybe important,
When I had tab open and plugged ito my note 2 wall charger ( which is 2.0 amp 5v output) the battery stayed cold but the long silver metal strip to tbe right of the battery became warm to the touch...... not sure what tbat means though.
Is the note 2 charger too weak to kick start battery?
Again thanks for your time and effort.
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gingerdude said:
Thanks for the guide , I will study it when I get back from work but the internal connector looks fine. I did forget one thing that maybe important,
When I had tab open and plugged ito my note 2 wall charger ( which is 2.0 amp 5v output) the battery stayed cold but the long silver metal strip to tbe right of the battery became warm to the touch...... not sure what tbat means though.
Is the note 2 charger too weak to kick start battery?
Again thanks for your time and effort.
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
If the Note 2 charger works with other device, I can't imagine being a problem with it.
Sorry, haven't studied the internal hardware, so can't offer any comment on that.
If you could somehow connect up a external power supply and try charge you might have success or narrow down the problem (if it's actually the battery or part of the charging circuit). Maybe you could PM the OP of that guide for further advice. Seems he's been fairly thorough and recent experience with our device internals. But please report here your outcome, we can all learn something.
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Adding to my previous post, there are many examples of this suggestion on the internet..........
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/
4: Avoid completely discharging lithium-ion batteries
If a lithium-ion battery is discharged below 2.5 volts per cell, a safety circuit built into the battery opens and the battery appears to be dead. The original charger will be of no use. Only battery analyzers with the boost function have a chance of recharging the battery
Click to expand...
Click to collapse
.
The cut-off level may be different, but same principle..... That's why it's been reported that a high capacity and good quality charger has been able to "kick-start" dead (sleeping) batteries into life.
I have no idea about using or obtaining / connecting "battery analyzers with the boost function" to your battery. Please refer to the previous tutorial link I gave you (which may or may not help).
Cheers,
UITA
Update on my tab. All efforts have failed so have ordered new batt and am awaiting arrival. Will post if it works or not so orhers may gain some insight if they experience similar issues.
Fingers crossed chaps.
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gingerdude said:
Update on my tab. All efforts have failed so have ordered new batt and am awaiting arrival. Will post if it works or not so orhers may gain some insight if they experience similar issues.
Fingers crossed chaps.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
I had a similar problem where I let my Tab battery drop too low. I tried various fixes, similar to the ones in this thread. Finally got it to work by letting the battery totally drain by leaving it on the Samsung logo, then opened it up, disconnect then reconnect the battery. Then charge using the wall charger. All good.
P.S. Be careful when opening the case. Refer to Youtube ''How To" vids.
Has anyone seen, or recovered from the below symbol (battery with yellow triangle and a crossed out plug)?
I left it in my luggage for a few days and when I took it out it was around 20% so I just turned it off. Later it wouldn't turn back on so I charged it overnight, over 9 hours.
I've tried holding power and volume down and I can get into Oden mode but otherwise it won't respond.
I tried the hold power button and touch screen for 30 seconds method as well, the farthest I got was the swirling Samsung screen during bootup, then it shuts off.
Afterwords it alternates between a battery charging icon and a (see attached) battery icon with a yellow triangle and a crossed out plug. Has anyone recovered from this?
I just passed one year since I purchased it and am in the middle of a long business trip where I typically depend on it so will be bummed if it's trashed. I don't mind replacing the battery but am not sure if this is the solution, and won't be able to get a battery for about two weeks so I hope there is another way. Many thanks!
izmahoby said:
Has anyone seen, or recovered from the below symbol (battery with yellow triangle and a crossed out plug)?
I left it in my luggage for a few days and when I took it out it was around 20% so I just turned it off. Later it wouldn't turn back on so I charged it overnight, over 9 hours.
I've tried holding power and volume down and I can get into Oden mode but otherwise it won't respond.
I tried the hold power button and touch screen for 30 seconds method as well, the farthest I got was the swirling Samsung screen during bootup, then it shuts off.
Afterwords it alternates between a battery charging icon and a (see attached) battery icon with a yellow triangle and a crossed out plug. Has anyone recovered from this?
I just passed one year since I purchased it and am in the middle of a long business trip where I typically depend on it so will be bummed if it's trashed. I don't mind replacing the battery but am not sure if this is the solution, and won't be able to get a battery for about two weeks so I hope there is another way. Many thanks!
Click to expand...
Click to collapse
For the sake of anyone who has a similar problem. I believe this was due to a faulty charger, which I bought off Amazon so assumed was good. I took it to Bestbuy and tried with one of the display chargers and everything worked as expected. It's a pain but at least I know the battery isn't bad.
So one day i left and the tab's battery was pretty low the brigtness drains batteries and when i plug it into an outlet, it treated like a usb it would take super long to charge but later that day {7-8hrs} i came home to a heated tab doing a battery logo with flashing to half way or near half way then shuts of and repeats. Can something be done
Sounds like your battery is shot, try charging it on a low power charger and see what happens
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