My 12.2 Tab Pro loses about 10% charge for every hour in use: about right, I think. It takes about an hour to charge about 10% when not in use: rather slow in my opinion.
When I am using my Tab while connected to the mains, it will not charge. In fact, it loses about the same amount as when it is not being charged.
Using in this context is reading books (Kindle), reading newspapers (PresReader) and web browsing.
I have tried USB 3 and USB 2 plugged into a mains plug, and USB 2 directly connected to a mains plug. I have tried different cables and plugs. They all behave similarly.
Should it not charge when in use?
Are you using the Samsung charger and cable that came with your tablet?
Sent from my SM-P900 using Tapatalk
Amongst others, yes.
I have same problem with mine. Battery can die super quick from 100%, then a restart shows it with 60% (as example) battery. Are you rooted? I've seen others with similar problems, but no answers. Thinking of sending back to get fixed
NineToTheSky said:
My 12.2 Tab Pro loses about 10% charge for every hour in use: about right, I think. It takes about an hour to charge about 10% when not in use: rather slow in my opinion.
When I am using my Tab while connected to the mains, it will not charge. In fact, it loses about the same amount as when it is not being charged.
Using in this context is reading books (Kindle), reading newspapers (PresReader) and web browsing.
I have tried USB 3 and USB 2 plugged into a mains plug, and USB 2 directly connected to a mains plug. I have tried different cables and plugs. They all behave similarly.
Should it not charge when in use?
Click to expand...
Click to collapse
Are you charging it from the computer?
Mine doesn't take an hour to charge 10%. You probably have a defective unit.
If it takes an hour to charge 10% using the stock cable and charger, there's a hardware fault somewhere, be it your cable, charger or the tablet itself.
Sent from my SM-P900 using Tapatalk
USB ports do not provide enough current to charge these devices. I understand that, when on, the power drain exceeds input from USB sources. I use AC with adapters rated at 2 A. I also have a car charger with that current rating that plugs into the car lighter. USB ports, whether in computers, cars, or airport lobbies are useless.
If you are using wall plug rated at 2A and are not charging, then one of the 3 components is bad (charger, cable, or phone).
Sent telepathically to my Galaxy S4
I'm also having the same issue . I have left it plugged in ( wall outlet ) and off for an entire day and it still wasn't charged 100% . I am rooted .
slow charging
gtrplyr67 said:
I'm also having the same issue . I have left it plugged in ( wall outlet ) and off for an entire day and it still wasn't charged 100% . I am rooted .
Click to expand...
Click to collapse
I bought my Tab pro 8.4 in June 2014. I use it about an hour each day and charge it when the charge drops below 30 percent.
Recently I have noticed, it takes all night to charge. This should not happen. my Ipod touch charges in less than 1 hour and its an old version 3, (6 years old or more)..
I am using the wall plug that came with the unit, to charge it. It should not be taking 12 hours.
This seems to be a problem with these 8.4's.
there are a number of possible causes: bad battery, port, charger, power source, too many apps .... you might want to read this guide on how to fix an Android phone that doesn’t charge (or discharges) when connected to a power source to help you identify the cause and fix it
Galaxy Note Pro Battery Issues
Brendo said:
I have same problem with mine. Battery can die super quick from 100%, then a restart shows it with 60% (as example) battery. Are you rooted? I've seen others with similar problems, but no answers. Thinking of sending back to get fixed
Click to expand...
Click to collapse
I have the exact same issue with My Galaxy Note Pro. It will not charge while in use and the battery drains extremely fast even with most all settings turned off and screen brightness turned down. I turn the tablet off every night to charge and the charging speed is extremely slow. I am using all Samsung OEM cables and chargers. Ive tried USB 2 & 3 cables with no noticeable difference. I am going to do a factory wipe and then closely monitor the power useage. Im starting to think that there is an issue with the Note Pro based on the sheer amount of users reporting the same or similar problems.
If anyone has figured out the culprit behind this issue, please pass it along!
Battery indication issues
I have the same problem with charging the Note Pro 8.4.
After some investigation and multiple tries it seems very much that the reported battery level is not in line with "reality".
It happened numerous times that while the tablet was on and charging, the battery level did not go up or only 1% every hour or so. After reboot the reported battery level was much higher.
I decided to throw some apps from the tablet which vastly improved the battery level indication and more or less seem to work as expected. I know from previous experiences with my Note 2 that some apps/widgets can wreak havoc on very basic functionality like charging. For example the stock picture frame widget on the old Note 2 had the effect the charging icon did not update. After reboot of the phone it was much better. Removing the widget solved the problem.
All in all carefully check installed apps/widgets on the Note Pro (8.4) because the firmware does not seem to cope well with certain apps/widget combination whatever that may be...
Related
I have a dock at work that I place my phone onto every day as soon as I arrive. I noticed at about 11 AM today that my phone was showing 72% battery, even though it should have been fully charged when I left this morning at 9 and had been sitting on the charger since 9:30. More annoyingly, it seems to be staying at about that level--it's not moving up at all. If anything, it's continuing to lose charge even as the icon shows it's charging!
I took it to a Sprint store, where they unhelpfully suggested that I have too many apps installed that are draining the battery in the background. I manually stopped most of them, uninstalled some that I don't really use, and put it back on the charger. It's still not going anywhere. I turned the phone completely off for an hour and charged the thing, and it had gained about ten percent (that seems pitiful, but at least it's charging?). It's back on the charger, still not really moving anywhere.
So what are my options at this point? I've never calibrated the battery, so maybe I need to do that. Other than that all I can think is that either the battery is going bad (but I have a feeling Sprint is going to insist "It's still charging" if I take it back to them and refuse to give me another battery), or perhaps the dock is not supplying the right voltage and hence it's not charging fast enough to overtake the power consumption.
What's bugging me is that I haven't installed anything in the past week that should be affecting my power consumption like this. Last week I had plenty of apps installed with GPS and bluetooth always on, and as long as the phone was docked it would eventually reach 100%. Now I have pretty much everything off, several apps I usually have running turned off, and several more uninstalled (including Lookout Security), and the battery is barely making any headway. I keep the screen on to a desk clock (because that's the whole point of a freaking dock), but that alone shouldn't be draining it faster than it can charge.
Any suggestions?
Sounds to me like its not getting enough voltage. When you charge it at home does it charge reasonably fast?
Sent from my SPH-D710 using XDA
I never really monitor it, but I would say so, yeah. All I really check is that it's fully charged in the morning before I walk out the door.
The culprit might be my dock. It says it's designed specifically for the GSII but the cable itself looks to just be your standard USB-to-microUSB dock, other than a little bump at the bottom so that it's clearly aimed for bottom-charger phones like an iphone or SGSII. I suspect it might be supplying less voltage than the charger that came with the phone.
Is there anything I can look at (app or internal setting) that can tell me what kind of voltage the phone is receiving?
EDIT: Should also note that it's sitting on the dock now and it is at least making positive gains on the battery, albeit at maybe 1% every fifteen minutes. I really don't remember it being this slow before. Perhaps the dock's cable is cheap and is just crapping out over time.
USB charging is about half the speed of regular, wall socket charging. Invest in an OEM charger or one that has similar specs to an OEM one.
Sent from my Galaxy S II, AOKP style.
do you have the dock connected to a USB port on a computer/laptop or wall outlet?
USB charges at 150mah while most ac adapters charge at between 750-1000mah.
Well, when I used the my generic LG USB cable it took about 5 hours to reach from 0% to about 40% while shut. So, I changed the cable and viola, charging to full in less than 3 hours while working on it.
So, it seems that the charger is bad quality. Try using the original cable (if possible) or may be the original charger plug.
I guess that's the only solution, because there is no way that the phone is discharging at a faster rate than charging, except when it is connected to an external display. This is the only thing that I encounter where the phone goes dead after a while despite it is connected to the charger...
Yeah, that dock is a POS. I'm not surprised it charges slow as balls too.
Amusingly, my phone has been running on the battery since leaving work for about four hours with the screen off, and it's only at 92%! I must have uninstalled whatever was draining it so quickly.
Thanks, guys.
If you think it's an application draining it, try better battery stats in the market. Might not be the problem but it does help.
Sent from my iPhone killer.
ahmadshawki said:
Well, when I used the my generic LG USB cable it took about 5 hours to reach from 0% to about 40% while shut. So, I changed the cable and viola, charging to full in less than 3 hours while working on it.
So, it seems that the charger is bad quality. Try using the original cable (if possible) or may be the original charger plug.
I guess that's the only solution, because there is no way that the phone is discharging at a faster rate than charging, except when it is connected to an external display. This is the only thing that I encounter where the phone goes dead after a while despite it is connected to the charger...
Click to expand...
Click to collapse
That's right. Use Original cable came with your phone.
I've experienced same thing when I tried to charge my D710 over LG micro usb charger thru AC outlet. The charging indicator was showing flash but actually it was not charging or charging speed was not enough to follow the battery usage.
I charged the phone all the night but in the morning it was empty!
Charging through the original Samsung micro usb cable, it never failed. But charging thru LG micro usb failed couple of times.
You can easily check a couple of things -
try to connect micro usb cable to your PC and set the USB mass storage mode.
If we use LG micro usb over samsung phone, it's not perfectly fit and data communication frequently fails. More importantly, Don't even try to odin your phone using LG micro usb.
It's not the issue of charger. It's the cable issue.
Do not use LG Micro USB cable for data communication, but if you want to use for charging, be sure that you hear the connection sound from the phone. If there's no connection sound, the battery won't last long even battery charging status shows the flash.
Hope this help.
When I first got this phone I noticed it charged pretty slow. 5 hours to get to full from 0% but it then got a lot worse. Over night it would only charge from like 18% to 41 so I got a new charger and wall adapter and that seemed to fix it for a couple days but now it is charging slow again. From 70% to 100 it takes about 6-7 hours. Anyone else experiencing this?
The only time I've heard of that happening is when people fail to 'condition' their lithium battery properly before normal use.
In other words, upon getting your new phone, and/or battery, you're suppose to allow your battery to fully discharge and then fully recharge 3-5 times to condition your battery before plugging it back in half way through discharge.
It's usually what the carrier sales clerks are suppose to tell you when purchasing a new smartphone.
Here's a simple article on the subject:
http://www.ehow.com/how_4797458_condition-cell-phone-battery.html
Sent from my SPH-L710 using xda app-developers app
drewmonge said:
The only time I've heard of that happening is when people fail to 'condition' their lithium battery properly before normal use.
In other words, upon getting your new phone, and/or battery, you're suppose to allow your battery to fully discharge and then fully recharge 3-5 times to condition your battery before plugging it back in half way through discharge.
It's usually what the carrier sales clerks are suppose to tell you when purchasing a new smartphone.
Here's a simple article on the subject:
http://www.ehow.com/how_4797458_condition-cell-phone-battery.html
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
I never had/has/have doing it. And I dont have battery issues.
I think the battery calibration/cycle..etc is just a myth.
Go to the store and check for warranty.
Sent from my SPH-L710 using Tapatalk 2
Could it be a rouge app causing it to take so long to charge? I noticed today Google maps was using a lot more of the battery than usual. Almost as much as the screen. I tried force stopping but it just starts right back up again. Any ideas on how to fix the maps app? I have a feeling that is what is causing it.
I have this problem. It is very annoying and I have no idea what causes it. It doesn't happen all of the time though.
rbtrucking said:
Could it be a rouge app causing it to take so long to charge? I noticed today Google maps was using a lot more of the battery than usual. Almost as much as the screen. I tried force stopping but it just starts right back up again. Any ideas on how to fix the maps app? I have a feeling that is what is causing it.
Click to expand...
Click to collapse
Just sounds like a bad install of something. I would do a factory reset through the stock recovery, and make sure to wipe dalvik cache.
My phone has started charging slowed as well, but mostly when connected to the computer. I made sure my usb ports were set to not allow the computer to shut them off to conserve power and it seems a bit faster. As far as charging and discharging ect ect I don't do that and never had a problem with slow charging and even the couple of times I tried it, the battery life never really improved. So think it is needed and some think it is a waste of time.
Charging via a computer USB port will always be slow when compared to the higher current capacity of the included AC charger. Computer USB ports have a lower current rating.
Make sure your using the charger that came with the phone, not all chargers are created equally.
There's also been some talk about the quality of USB cable being used, but I haven't found that myself yet.
Little bit of info...
I have tried numerous chargers while at work here (Technician) and there are some issues.
Samsung is funny on which chargers it accepts. Very funny.
1. Stardard charger that comes with the device will charge best. (Obvious I know) Using wall charger. (Full charge in 3.5 to 4 hours from 1%)
a. Using USB end plugged into PC while charging takes typically from my tests double the time to charge. (I'm guessing that data connection to PC is slowing the charge. (Full charge in 6 hours from 1%)
2. 3rd Party Generic charge cables (usb cable only) still charges device however stardard power draw is lower and does not charge in a decent time period.
a. Some 3rd Party usb cables plugged into a pc showed charging however they did not keep enough of a draw to actually charge my phone. I lost battery instead of gaining.
3. LG chargers did nothing for me. Couldn't get a decent charge.
Motorola chargers gave me the best charge besides the original.
Chargers with replacement tips... what can I say. They didn't seem like a good idea and weren't. I had too many issues and at times had some overheating issues. Luck of the draw me thinks.
3rd party wall chargers were hit or miss. A few did seem to give me a decent charge, others gave me a very slow trickle charge taking anywhere up to 8-9 hours for a full charge from 1%
All in all... it's a crap shoot using 3rd party cables. It's all based on voltage output and Samsung likes to change things alot. You will still get a charge but who knows the length of time it will take.
Oh and car chargers... typically only good for keeping it at the same level you plugged it in at for short drives. Long drives obviously work much better.
Hope this helps.
About charging: I have noticed that micro USB cable that come with S3 is really bad - it is loosing a connection to PC,and, beside that, I have noticed several times slow phone charge... Accidentally went to settings- battery - when I was on AC charger and saw in settings that phone is actually charging in USB mode!!! Wtf??? Disconnect usb from bottom end (at charger side) and reconnect and then on phone says " charging - AC" ... So,conclusion is that you check your phone charging status when you put on charger,maybe it is charging in USB mode and because of that phone is charging slower than it should on regular AC power.
The only battery issue that i have noticed is when i use my computer to charge it takes forever but when i use the factory wall plug and cable it charges quickly with no issues
Excellent post supercholo. Really helpful. I was starting to think my phone was broken.
Anyone got any experience with using an ipad charger on an sIII. I know an ipad wants a lot of power to charge.
FYI These are the voltages listed on my chargers;
Apple ipad1 charger 5.1v 2.1a
SAMSUNG s3 wall charger 5v 1a
Samsung Galaxy i9000 wall charge 5v .7a
supercholo said:
Little bit of info...
I have tried numerous chargers while at work here (Technician) and there are some issues.
Samsung is funny on which chargers it accepts. Very funny.
1. Stardard charger that comes with the device will charge best. (Obvious I know) Using wall charger. (Full charge in 3.5 to 4 hours from 1%)
a. Using USB end plugged into PC while charging takes typically from my tests double the time to charge. (I'm guessing that data connection to PC is slowing the charge. (Full charge in 6 hours from 1%)
2. 3rd Party Generic charge cables (usb cable only) still charges device however stardard power draw is lower and does not charge in a decent time period.
a. Some 3rd Party usb cables plugged into a pc showed charging however they did not keep enough of a draw to actually charge my phone. I lost battery instead of gaining.
3. LG chargers did nothing for me. Couldn't get a decent charge.
Motorola chargers gave me the best charge besides the original.
Chargers with replacement tips... what can I say. They didn't seem like a good idea and weren't. I had too many issues and at times had some overheating issues. Luck of the draw me thinks.
3rd party wall chargers were hit or miss. A few did seem to give me a decent charge, others gave me a very slow trickle charge taking anywhere up to 8-9 hours for a full charge from 1%
All in all... it's a crap shoot using 3rd party cables. It's all based on voltage output and Samsung likes to change things alot. You will still get a charge but who knows the length of time it will take.
Oh and car chargers... typically only good for keeping it at the same level you plugged it in at for short drives. Long drives obviously work much better.
Hope this helps.
Click to expand...
Click to collapse
Very slow charging with OEM charger.. i9300
This is a fact. The OEM wall charger surely has some issues. Though 1amp output, as claimed on th specs chart, my i9300 charges super slow. From 80% to 100%, it takes nearly 3 hours.
So, i switched chargers and used my S2 and Note OEM wall chargers. And voila, the phone charges super fast. I even ordered a new OEM charger for s3 with the data cable included and the same issue occured.
This has worsened ever since the JB update. So I am now using the S2 charger and very satisfied.
SWTICH OVER GUYS!! OEM charger is useless,,,
I have had my phone on USB to computer charging for 7 hours, with a one hour break to watch Dexter. I was at 18% and I am now at 69%. I think I will have to use the wall adapter because this is just ridiculous.
Usb to pc will always be slow buddy. It outputs 500ma while d wall charger is 1 amp
I found my Usb cable faulty. Sent for replacement.
Cheers
→→Android▶◀▶◀ ROCKS!◆◆◆
Without reading all the post. I have had this same problem. Took phone to sprint, they tested the battery and it was bad. Got a new one and good to go..
I just got a t-mobile version of the S4 and I'm loving it, but I noticed it is very very slow to charge.
Aside from light to medium usage i didn't touch it much between last night and today. I had it plugged in and charging via USB, but it maybe charged about 40-45% in 6+ hours. My old phone (LG G2X) never took this long to charge.
More Info;
This was using the Stock T-mobile Rom
I have since rooted and installed CM10 nightly on the phone, It appears to suffer the same issue
Between 9:27 to 10:00 it went from 67% to %74, My LG went from %39 -%56 in about 20 minutes. By those quick number it will take 7 hours to charge the S4 while only 3 to fully charge the g2x
Is this normal? is there anything i can do to fix/test or alleviate this?
icewolf293 said:
I had it plugged in and charging via USB,
Is this normal? is there anything i can do to fix/test or alleviate this?
Click to expand...
Click to collapse
The question for you is the source? If you plugged it into your compy, it will take forever as standard compy USB ports (USB 2.0) provide only about 500 mA. The stock S4 charger is 2 Amps.
The fix, plug the phone into the wall using your stock charger. If it is still slow, it is probably your battery. Good luck.
Make sure to use the charger that it came with. Ever since I started using the stock charger my battery charges fast. Also it could be your plug so test it with another just in case.
Sent from my SGH-M919 using XDA Premium HD app
Yup it was the charger, I have chargers pretty much where ever i go so i just used those. With the stock one it works great but i ran into another issue. I plugged it in and it was taking a really long time to charge with the stock charger, something like 3% in 30 minutes. I had to unplug and plug in the cable again and it charged normally.
Is this something I should worry about?
It could be possible that the cable was not properly seated in the phone, or the charger end was not properly seated in the wall cube. I wouldn't lose sleep over it unless it happens often. Could be a phone problem, but sounds like a one off to me.
Yea my lady like to use my charger with her HTC phone because it "charges faster". The S4 stock charger has the highest amp rating and provides juice at the highest rate to any device. :good:
icewolf293 said:
I just got a t-mobile version of the S4 and I'm loving it, but I noticed it is very very slow to charge.
Aside from light to medium usage i didn't touch it much between last night and today. I had it plugged in and charging via USB, but it maybe charged about 40-45% in 6+ hours. My old phone (LG G2X) never took this long to charge.
More Info;
This was using the Stock T-mobile Rom
I have since rooted and installed CM10 nightly on the phone, It appears to suffer the same issue
Between 9:27 to 10:00 it went from 67% to %74, My LG went from %39 -%56 in about 20 minutes. By those quick number it will take 7 hours to charge the S4 while only 3 to fully charge the g2x
Is this normal? is there anything i can do to fix/test or alleviate this?
Click to expand...
Click to collapse
There are a few factors here.....
1. The charger itself. The original Samsung is a 2A charger. If you use a different one (most are only 1A) it will take twice as long to charge.
2. The USB Cable. Believe it or not, not all cables are the same. With the standard charger and cable you will be able to charge @ 1900mA. Less then 2 hours to fully charge a completely dead battery. But.... plugging some USB cables into the standard charger will limit the charge down to just 600mA.... taking 3x_ longer to charge.
3. The other is the kernel. If you're using a newer custom kernel Samsung has limited to a max of 1200mA with the screen on & full 1900mA with the screen off.
Lastly, you can download an app on the playstore called Galaxy Charging Current. This will show you the charging rate should you want to test your setup.
dannyben said:
There are a few factors here.....
2. The USB Cable. Believe it or not, not all cables are the same. With the standard charger and cable you will be able to charge @ 1900mA. Less then 2 hours to fully charge a completely dead battery. But.... plugging some USB cables into the standard charger will limit the charge down to just 600mA.... taking 3x_ longer to charge..
Lastly, you can download an app on the playstore called Galaxy Charging Current. This will show you the charging rate should you want to test your setup.
Click to expand...
Click to collapse
This man speaks the truth. I use CurrentWidget and set to manual update. Whenever I'm testing cables/chargers, I plug in a known good cable (charges at 1900) to see what the charger is putting out. I do the same with a known good charger (2A - iPad and S4) and test the cables
Did anybody get issues months after they'd purchased the device?
My 8.4 Pro worked perfectly (6-8h SoT, 100% charge everytime) for about 2 months, but hasn't been charging properly since yesterday. I tried combos of all my charger/cables - they are all giving 1A+ rate on my other devices, but not even being measured on the tab (vis Ampere). Battery has been stuck around 50% for ages. I'm in India, so no easy way to get this back to the US for warranty replacement. Besides, by the time I return to NJ, the tab will be out of warranty.
Please note that I have also factory reset it. The problem, unfortunately, persists.
What should I do? This may not be a software issue: I use this tab while I'm on a stationary cycle, so maybe that motion somehow 'knocked' the battery out of whack somehow? Should I open up the tab and do a battery reset? Is there any, less dangerous, solution?
SoberDogs said:
Did anybody get issues months after they'd purchased the device?
My 8.4 Pro worked perfectly (6-8h SoT, 100% charge everytime) for about 2 months, but hasn't been charging properly since yesterday. I tried combos of all my charger/cables - they are all giving 1A+ rate on my other devices, but not even being measured on the tab (vis Ampere). Battery has been stuck around 50% for ages. I'm in India, so no easy way to get this back to the US for warranty replacement. Besides, by the time I return to NJ, the tab will be out of warranty.
Please note that I have also factory reset it. The problem, unfortunately, persists.
What should I do? This may not be a software issue: I use this tab while I'm on a stationary cycle, so maybe that motion somehow 'knocked' the battery out of whack somehow? Should I open up the tab and do a battery reset? Is there any, less dangerous, solution?
Click to expand...
Click to collapse
You need to use a 2A rated charger and really there is only a few that qualify, I suggest you only use the Samsung charger as they seem to have a certain way to charge it, chargers do go bad sometimes so look for an official replacement (they cost like $5 on ebay), beware of knockoffs though since they look identical, I suggest searching for the same model number on the charger. IE : EP-TA10JWE
anyways here are some things to try in the meantime
1. drain the battery down to 15%
2. hold the power button down and choose the Power Off setting, wait until you feel it vibrate, now let the tablet sit for an hour in this state. (do not hook it to a charger)
3. after an hour or two, plug the charging cable into the table and let it charge (do not turn it on), you should see an animated battery screen show up a few times, see if it reaches 100% in this "powered off" state.
if it does then that could mean there is an app running in the BG when it is started causing a lot of cpu load or keeping it awake..
I've so far had my tab 8.4 for almost a year and the battery is still holding up with 8-10h of runtime (depending on what I do). and it always charges to 100% using the samsung charger.
otyg said:
You need to use a 2A rated charger and really there is only a few that qualify, I suggest you only use the Samsung charger as they seem to have a certain way to charge it, chargers do go bad sometimes so look for an official replacement (they cost like $5 on ebay), beware of knockoffs though since they look identical, I suggest searching for the same model number on the charger. IE : EP-TA10JWE
Click to expand...
Click to collapse
The chargers I tested were rated 2A, and their cables were 28/24 AWG. On my Dell Tablet, the same setup was giving me around 1300 mah. On the pro, most of the time the current didn't even get measured.
Tried the other things you mentioned. It charges, overnight, to 100%, but despite the factory reset, weird battery behaviour is observed: slow recharge, jumping from 93% to 100% the moment i connected it to the lappy to transfer data, etc.
SoberDogs said:
The chargers I tested were rated 2A, and their cables were 28/24 AWG. On my Dell Tablet, the same setup was giving me around 1300 mah. On the pro, most of the time the current didn't even get measured.
Tried the other things you mentioned. It charges, overnight, to 100%, but despite the factory reset, weird battery behaviour is observed: slow recharge, jumping from 93% to 100% the moment i connected it to the lappy to transfer data, etc.
Click to expand...
Click to collapse
You are using the Samsung charger?, I noticed with other chargers for some reason when the battery gets near full the mA drops to under 200mA and stops charging the battery or its just enough to keep the tablet running, this does not happen with the Samsung charger it mostly charges the tablet at 1880~mA, when its in the 90% range drops to about 600-800mA so it can still trickle charge the batt and provide enough power to keep it running.
I have tried other chargers like the 2A HP Touchpad Charger (was supposed to be the best charger out) and some 2A powerbanks - and they all fall short near 90%, just don't pull enough amps, I think the samsung charger has a higher voltage too 5.60v where the others are around 5.30v
btw I have an actual hardware mA cable that shows the current in realtime, I'm not sure how accurate the battery monitor programs are for android without root access, since without root I don't know how they read the system files.
otyg said:
You are using the Samsung charger?, I noticed with other chargers for some reason when the battery gets near full the mA drops to under 200mA and stops charging the battery or its just enough to keep the tablet running, this does not happen with the Samsung charger it mostly charges the tablet at 1880~mA, when its in the 90% range drops to about 600-800mA so it can still trickle charge the batt and provide enough power to keep it running.
I have tried other chargers like the 2A HP Touchpad Charger (was supposed to be the best charger out) and some 2A powerbanks - and they all fall short near 90%, just don't pull enough amps, I think the samsung charger has a higher voltage too 5.60v where the others are around 5.30v
btw I have an actual hardware mA cable that shows the current in realtime, I'm not sure how accurate the battery monitor programs are for android without root access, since without root I don't know how they read the system files.
Click to expand...
Click to collapse
Getting a slow current with the 5.3v samsung charger and cable as well. But yeah, using software (GSM battery, Ampere) to get the charge.
SoberDogs said:
Getting a slow current with the 5.3v samsung charger and cable as well. But yeah, using software (GSM battery, Ampere) to get the charge.
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Hm I suppose the battery could of went bad if it wasn't being charged properly by some chargers for example if it was never reaching 100% then the system never shuts off the charging mechanism and will essentially cook the battery causing it to die faster then normal .
If you had root access you could check the status of the battery and it would report the battery info in stages - very good (brand new), good, bad, fail ..etc I am not sure if non root programs can access this info.
I guess there are a few extra things to try.
1. A new Samsung charger, it might be possible yours went bad.
2. re-seat the battery, though this requires opening the tablet possibly voiding the warranty or causing other damage - maybe take it to a repair shop if you have difficulties, from what I have read on this forum it has solved numerous cases like yours, not sure exactly what it does perhaps removing voltage from the hardware causes and glitches to reset like from accidental static electricity shocks or if it just re-calibrates the battery like it was replaced..etc, it might just be the connector comes loose, anyways it sucks Samsung didn't included a reset button since it's a needed feature for sealed tablets)
SoberDogs said:
Tried the other things you mentioned. It charges, overnight, to 100%, but despite the factory reset, weird battery behaviour is observed: slow recharge, jumping from 93% to 100% the moment i connected it to the lappy to transfer data, etc.
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This is a fairly common issue on this device. Its a defect, I'm thinking its the "smart battery" circuitry on the battery itself (my understanding, at least some of the metering is done on the battery by this circuitry). Its been discussed at length on the following thread; with the suggested fix being to open up the tablet and "reseat" the battery: http://forum.xda-developers.com/galaxy-tab-pro-12-10-8/general/reseating-battery-wonder-battery-life-t2944610
I've had this problem for a while now. The issue was non-existent or rare at first, then got more common after owning the device for a few months. Haven't used any apps to measure the mA, but this is across 3 or 4 different chargers, 2 of which are original Samsung 2A chargers (had another one left from my broken Note 8). The issue also persists whether on stock ROM, custom TouchWiz ROM, or custom AOSP ROMs.
Sometimes the tablet will charge fully, no issue. Sometimes it will stop somewhere along the way (well short of 100%) and doing a reboot will usually get the charging "going" again. Sometimes I will need to reboot 3 or 4 times to get it charged to 100%. I've also tried factory resets, but its hard to say whether this helps or not.
Short of rebooting while charging, there isn't much I've found to help. I haven't tried opening the device to reseat the battery.
Maybe the usb port in the tablet has some debri in it. Try blowing it out with some cpompressed air. The symtoms sound like a faulty usb cable but if you have tried different ones it might be the port.
Sent from my SM-T320
Hello!
Charging problems started to occur a month ago on my phone. The problem is that it charges really slowly, but other times normally.
I experienced that if I plug in the phone when the battery is between 20-60% it charges super slowly.
Sometimes it speeds up but more often not.
Here are some screenshots that show that sometimes it takes like 6 hours to charge and sometimes it basically just hovers around a percentage and doesnt do anything. Gets like 10% overnight.
On the second picture you can see that it charges normally till it reaches 55% then it slows down to like 5%/hour speed.
I noticed this while the phone was draining battery even tho it was plugged in while using it.
I bought a new OEM battery and its the same with it aswell. Some chargers charge it quicker, some slower, but the problem occurs with every charger.
What do you guys recommend me to do?
Thanks a lot!
is your charger 2 Ampere as it should be?
U can also try to recalibrate the battery deleting the data/system/batterystats.bin file
haget83 said:
is your charger 2 Ampere as it should be?
U can also try to recalibrate the battery deleting the data/system/batterystats.bin file
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Thanks for the reply!
I have used many chargers since I have this problem, but mostly the one that came in the box.
Ill try deleting that file if its possible withouth root.
Edit: It seems i need root for it, so its not an option for me.
Kr3Ep said:
Thanks for the reply!
I have used many chargers since I have this problem, but mostly the one that came in the box.
Ill try deleting that file if its possible withouth root.
Edit: It seems i need root for it, so its not an option for me.
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Actually brother initially same problem occured with me and it was persisting on the same way load since i come to change my charger now before i was charging it with blackberry passport charger it was really cool and even charges it faster that i mean around 50% faster than the previous charger, but now days m befitted with moto g4+ which meets to charge my lg g3 around 65% faster
But brother dont use any local company pr anypther charger as it may damage the phone display which may come to cost you at high
There are going to be 3 main factors that you want to address:
- Battery
- Charger/charging cable
- Software
It seems you have already addressed your battery. That's usually the #1 culprit, but you've already replaced it so you can rule that out.
The next is the charger and charging cable. This is often overlooked. The stock charger is 5 volts and 1.8 amps (5v 1.8a). Before more advanced smart phones were developed, almost all USB chargers never produced more than a 5v 1.0a charge (most were 5v 0.5a). So you want to ensure you are using at least a 5v 1.8a charger. (I even use my Fire Tablet charger on my G3 which is 5.1v 2.2a, and that works great too). Note that all USB chargers have their output volts/amps printed on them somewhere (usually in very tiny print). The USB cable you are using matters too. The thinner the wire gauge and the longer the cable is, the less power is transmitted. For example, if you're using a thin and cheap 6 foot (2 meter) USB cable on a 5v 2.0a charger, you may only be getting 1.0a of charge from it. If you use a thicker, shorter, and more expensive 3 foot (1 meter) USB cable on that same charger, you ensure you get that full 2.0a of charge (or close to it). The two factors to look for in a USB cable is length (length = resistance = less amps) and wire gauge (not insulation thickness).
The last is software. If you have any way to backup and restore (ie nandroid) your ROM from recovery, I recommend doing that first because it's easy. If you backup your current ROM, factory reset, and the issue persists then you know its the charger/cable. If the issue is gone, then you know it's something in your current ROM. If you do not have access to backup/restore features and/or do not have root, then next you can use the Android OS Battery stats to carefully go over what could possibly be draining so much power when the phone is on or off. There are also several apps that will help you determine where the battery drain is coming from. Note that software can not prevent your phone from charging, but it can drain power so fast, that there is not enough left over to charge the battery. This is especially bad for our G3s because they easily overheat if they are charging and heavily discharging simultaneously.
Hope that helps! Good luck! :fingers-crossed: