[Q] battery - Samsung Galaxy Mega

i am facing a problem with my battery.when i charge my phone it never charges up t0 100% it says 100 %but when i activate my phone it says 98%.i use original samsung cable and original samsung charger.how can i reset my battery stats? iam not rooted.

kalotina said:
i am facing a problem with my battery.when i charge my phone it never charges up t0 100% it says 100 %but when i activate my phone it says 98%.i use original samsung cable and original samsung charger.how can i reset my battery stats? iam not rooted.
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You need to root and use battery calibration app from the Play store.

Standard samsung practice was the same on the note samsung state 100 percent but never actually fully charge to 100 when unplugged will normally drop to 98 percent. Not a fault but a protection method custok kernels can remove this and did was the same for some asus tabs and galaxy tabs
Sent from my GT-I9205 using xda premium

I believe that works for the charging on many devices.
You can sometimes notice this behavior if you leave plugged for a few after the full charge:
my understanding is that to protect the battery, the charging process will actually stop at 100%, allowing the battery to discharge slightly, then will charge up again and so on and so on. So if you unplug it right when it hits 100%, maybe it'll show that number?

Related

my phone never get more than 91% battery charge

need help with this problen
flash into xrecovery and wipe battery stats!
Also, calibrate your battery. Fully charge, remove battery, reinstall battery, fully charge again. Repeat 2-3 times until says 100%.
Stock charges to around 88%.
jpkilla995 said:
need help with this problen
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Read this thread: [GUIDE] X10 Battery Calibration
My battery is also causing trouble
I put the phone in charger is loading the phone up to 88 then stops
And when I take out and put in the charger my phone charges up to 100
While the charger still connected is again removed the battery to 88
I have to use the directory that you brought?
Sorry for my english lol
Yeah calibrating your battery almost always will help. Check the market if you haven't yet. There are a couple Apps that will help do it.
Sent from my X10i TripNMiUI using XDA App
Ok thnx
dont use your phone while in charge and then see the status of ur battery.. if u use ur phone while charging, it never charges up fully..
Pls hit a thanks if u r satisfied
I experience this when I leave my X10 charging all night long (turned on). It seems it charges up to 100% and then keeps draining it, despite the connected charger. Have you ever tried offline charging?
I want to charge it when it is turned off. But I do not know if he filled it to the end. Because I do not know what percentage has
That there is no sign of a fully charged battery

Charging Question

does anyone know if its possible to find out if the s3 is really charging or not? ive been plugged in and it's still discharging. I need to know if its hardware or software related. when plugged in it has a lightning on the battery and it has red led when display is off but its really slow on charging
anthony001 said:
does anyone know if its possible to find out if the s3 is really charging or not? ive been plugged in and it's still discharging. I need to know if its hardware or software related. when plugged in it has a lightning on the battery and it has red led when display is off but its really slow on charging
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Click to collapse
same here!
anthony001 said:
does anyone know if its possible to find out if the s3 is really charging or not? ive been plugged in and it's still discharging. I need to know if its hardware or software related. when plugged in it has a lightning on the battery and it has red led when display is off but its really slow on charging
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The battery does not charge to 100 %, this is not a defect in the phone but rather a sort of internal protection so as to not damage the battery. Indeed, it happens many times to leave the phone connected to the charger much more time necezzario.
The battery by doing so you may receive a surplus of energy than necessary, and in the long run, deteriorate more quickly. Samsung has inserted inside the Galaxy S3 a limiter that operates in the following way: while the phone is charging, you download slightly of 2-3% for then recharge automatically up to 100 %. This process is repeated automatically from your phone until it is removed from the charger.
Use this app.for monitoring battery ; https://play.google.com/store/apps/...ch_result#?t=W251bGwsMSwxLDEsImNjYzcxLmJtdyJd
If necessary make a battery calibration uses these applications ; https://play.google.com/store/search?q=calibration&c=apps
While plugged in go to settings/battery and see if it is ac charging or usb charging....I've had this problem with the new cable and plug, it only charges at usb rate, use my old S1 charger now, BlackBerry one worked for me as well
devid801 said:
The battery does not charge to 100 %, this is not a defect in the phone but rather a sort of internal protection so as to not damage the battery. Indeed, it happens many times to leave the phone connected to the charger much more time necezzario.
The battery by doing so you may receive a surplus of energy than necessary, and in the long run, deteriorate more quickly. Samsung has inserted inside the Galaxy S3 a limiter that operates in the following way: while the phone is charging, you download slightly of 2-3% for then recharge automatically up to 100 %. This process is repeated automatically from your phone until it is removed from the charger.
Use this app.for monitoring battery ; https://play.google.com/store/apps/...ch_result#?t=W251bGwsMSwxLDEsImNjYzcxLmJtdyJd
If necessary make a battery calibration uses these applications ; https://play.google.com/store/search?q=calibration&c=apps
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Click to collapse
Hmm, im not talking about when it charges at 100 % im talking about when it charges in mid ranges like 50 or 80. It shows charging but an hour passed but it didnt even increase to 2 percent
Are you on an original rom or a custom / leaked one?
Have you tried another charger or computer?
It may take some time to charge on slower chargers (the ones only outputting 0.5Amp) but it definitively should not be discharging when connected to a charger with the screen off.
Im on stock firmware. Using the wall outlet ti charge the phone

Xperia st15i battery problem.

So, i bought from eBay a small and cheap battery bank. After charging my phone with it, my device started to reboot now and then. As the time passed, the problem was getting serious, until i wasn't able any longer to turn on my device (the initial logo would appear for a ms and then vanish), even when My device was plugged with the wall charger. I then bought a generic battery, and my device seems to be working fine now (except for the battery meter,which seems not able to get celibrated - after a full charge, it would show 100% for some time, then a fast drop to 80, it would stay there, suddenly then 70, then 40...).
So, I was wondering if you could tell me what did get wrong with my first battery. The battery meter got messed up. After a full charge (battery level 100%), and a reboot, my battery meter was showing no more than 15%, while the voltage was pretty much 4200 mV. From then on my device was rebooting constantly, until I couldn't get it on again...
Now i have this second battery, on which i'm afraid to plug that battery bank, since it could possibly damage the battery.
Sent from my Xperia Mini using xda app-developers app
Slump004 said:
So, i bought from eBay a small and cheap battery bank. After charging my phone with it, my device started to reboot now and then. As the time passed, the problem was getting serious, until i wasn't able any longer to turn on my device (the initial logo would appear for a ms and then vanish), even when My device was plugged with the wall charger. I then bought a generic battery, and my device seems to be working fine now (except for the battery meter,which seems not able to get celibrated - after a full charge, it would show 100% for some time, then a fast drop to 80, it would stay there, suddenly then 70, then 40...).
So, I was wondering if you could tell me what did get wrong with my first battery. The battery meter got messed up. After a full charge (battery level 100%), and a reboot, my battery meter was showing no more than 15%, while the voltage was pretty much 4200 mV. From then on my device was rebooting constantly, until I couldn't get it on again...
Now i have this second battery, on which i'm afraid to plug that battery bank, since it could possibly damage the battery.
Sent from my Xperia Mini using xda app-developers app
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Click to collapse
Get a proper working battery from your friend...let your phone run through a complete charge/discharge cycle..
Completely drain the battery..Connect to wall charger and leave it for 5 hrs..See if it fixes the battery meter..
I suspect the battery bank is giving a over voltage or its not grounded properly...dont use that anymore..
Hit thanks if i helped you..
Regards..

The Mega charging/discharging issues..

I love my Mega. It is by far the best phone Ive ever had. But, the problems I have with the power usage and management on the device are a total nightmare.
1) The discharging nightmare:
The battery lasts NOTHING. Basically I get about 5 hours of use.. maximum.. no matter what I do.. and I have slimmed down to the ROM to having that NOTHING active.. I literally am left with active 6 services and I monitor CPU usage that is always near zero with NO apps hogging resources. From what I monitor on the device's battery usage, it's clearly always about 90% from the display! And yes, I dim the screen as much as I can of course, but usually not below 1/2way.. I hate screens too dim. However even just on standby with the screen off I still lose about 5% to 8% of battery an hour. Worse, even with the device Powered OFF, I still lose about 20% of battery a day. The ONLY way I have found out to control battery drain completely, is to take the battery out. That's it. Anyone else with similar symptoms and a fix or, is just that the stock battery totally sucks??? Also, any other off brand batteries are any better?.. (not the fat ones rated at much higher amps but that have an extra bulge.. that I don’t want)..
2) The charging nightmare:
This to me is the worse problem. It is bad enough how quickly this device issues battery, bit not nearly as bad as trying to charge efficiently again. I now have tried 3 different chargers/brands (and cables) to try fix the charging problem that is, it takes HOURS and HOURS to charge the battery. I am talking 5 to 6 hours to get it charged and if the screen is on and Im using the device it actually charges NOTHING at all and still keeps discharging (albeit much slower of course)... the fact is that the charging process is so pathetically slow that is less than real-time which means, with the device connected to power supply, the battery STILL drains if I try use it. This is absurd. However, mysteriously enough I have found ONE way that charges the phone super fast.. using a SONY External Power Pack (model CP-F1L) rated at 2200mAh. This is seems crazy because the power output of an external power pack should be much lower than the stock (and other Samsung) USB chargers.. but, it's what works.. the ONLY thing that works. And I have noticed that when connected to a USB Power charger, the Mega's Red LED light turn on faded.. however, when connected to the SONY External Power Pack, is bright red. Clearly more juice going in.. or something like that. Again, anyone else with similar symptoms and a fix the charging time, or, any good recommendation on a extra strong USB power adapter/charger that will make this thing at least charge faster?
Thanks in advance for the input and advice:silly:
Sounds like something is not letting your phone sleep or the battery is defective. Try putting CPU spy on it and let it set for a while. Then check to see if it is getting into deep sleep or if it is even stuck at a certain frequency.
There is an app on the playstore called Galaxy charging. Try it to see what rate it is charging. Though with the rate your phone discharges, the charger may only being supplying an amount just over the drain rate which is why it takes so long to charge.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Yes this is not normal, I get five hours screen time on fifteen hours usage.
Sent from my GT-I9205 using Tapatalk 2
Yep, something wrong there. I'm stock and this thing won't quit :good:
I would flash the stock rom back into your phone and see how the battery works then as this not normal as mentioned by other members as I am still on the stock rom but rooted only and I have great battery life.
That is were to start by flashing the stock rom and if no change then battery or maybe a hardware problem.
Did you have good battery life before you starting flashing with the phone or did this occur after the stock rom was removed and custom rom with stuff removed to gain performance?
Sent from my SGH-I527M using xda app-developers app
Sometime i got 96% bug
Battry is fully charged = 100%
remove charger
Reboot device
Suddenly Battery become = 96%
ps000000 said:
Sometime i got 96% bug
Battry is fully charged = 100%
remove charger
Reboot device
Suddenly Battery become = 96%
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You could try to remove the battery from the phone for about 5 secs and re-install and see it that helps as sometimes if you take the charger off as soon as it is done charging it might not show 100% at times when booting as I leave mine on for a bit longer and it seems to help..even though charge light is green..I leave it longer on.
If your phone is rooted get a app called battery calibrator from the google store as it is free and install it and just before you shut down the phone to charge wipe the battery stats with this app and then shutdown phone and fully charge and then see how the battery works after the battery stats wipe as that can usually help.
Sent from my SGH-I527M using xda app-developers app
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Mad383Max said:
Sounds like something is not letting your phone sleep or the battery is defective. Try putting CPU spy on it and let it set for a while. Then check to see if it is getting into deep sleep or if it is even stuck at a certain frequency.
There is an app on the playstore called Galaxy charging. Try it to see what rate it is charging. Though with the rate your phone discharges, the charger may only being supplying an amount just over the drain rate which is why it takes so long to charge.
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Click to collapse
Thanks for the tip. Installed the app you recommend, now I understand better. With the stock Samsung USB charger I get 420 readings. With the other 2 chargers I get 500 and 540. However, with the Sony External Power Pack I get 1900!..no wonder it charges super fast with it! My question now is what's up with all the USB chargers I have? I even tried my old Galaxy Tab 7 charger (strongest rated charger I have) and still only feeds 480. This is all so bizarre. So, where to get a super strong charger for the Mega?
(sorry.. by whatever reason my reply got posted 4 times.. so strange. I try delete the first three but cant)..
VeEuzUKY said:
Thanks for the tip. Installed the app you recommend, now I understand better. With the stock Samsung USB charger I get 420 readings. With the other 2 chargers I get 500 and 540. However, with the Sony External Power Pack I get 1900!..no wonder it charges super fast with it! My question now is what's up with all the USB chargers I have? I even tried my old Galaxy Tab 7 charger (strongest rated charger I have) and still only feeds 480. This is all so bizarre. So, where to get a super strong charger for the Mega?
(sorry.. by whatever reason my reply got posted 4 times.. so strange. I try delete the first three but cant)..
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Click to collapse
Usually when this happens there is something wrong with the USB cable not necessarily the charger. Is the sony cable a USB type cable or a hard wired one? If it is USB type try using it with the other chargers and see what your results are.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Mad383Max said:
Usually when this happens there is something wrong with the USB cable not necessarily the charger. Is the sony cable a USB type cable or a hard wired one? If it is USB type try using it with the other chargers and see what your results are.
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Click to collapse
Yes indeed I notice the Sony Power Pack cable is short and thick. The Samsung cable is long and thin. I get much higher charging power using the thick short cable. Maybe I need go shop for a proper longer/thicker cable.
VeEuzUKY said:
Yes indeed I notice the Sony Power Pack cable is short and thick. The Samsung cable is long and thin. I get much higher charging power using the thick short cable. Maybe I need go shop for a proper longer/thicker cable.
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I've certainly found the USB cable makes a big difference to the charging speed. I got a couple of 2m cables off Ebay and they're hopelessly slow, but the stock Samsung cable is fast. I just wish it was a bit longer!
I have the same issue
I have the Sprint Mega. Not refurbished and original factory state but I have horrific charge/discharge issues. Right now, my phone just got to 100% charge which I then unplugged the charge cable. Within 5 mins, I went from 100% to 96% and it is losing battery even quicker.
VeEuzUKY: It's been a while but do you still have this phone? Any updates? I should prob invest in a thicker USB cable like you've describe. It has the most charge rate.
I got my mega 6.3 last week. Since then it has said 100% charged... even when charging or dead. So I got a new battery thinking it was the battery but its obviously not and im not sure what it is that could be the problem. Im not sure if its crucial for my phone, if it can be fixed easily and cheaply, or if I need to return my phone to the place I bought it from.

Need advice on charging my S3

Hi,
I've read various guides on the net on the best way to charge an S3 (or any modern smartphone).
Some say charge when the battery is at 40% and take it off when it reaches 80%.
Some say to fully discharge it, then charge to 100%.
Can anyone give me advice on the best way to charge my phone (so the battery lasts longer).
Thanks.
skatlyup said:
Hi,
I've read various guides on the net on the best way to charge an S3 (or any modern smartphone).
Some say charge when the battery is at 40% and take it off when it reaches 80%.
Some say to fully discharge it, then charge to 100%.
Can anyone give me advice on the best way to charge my phone (so the battery lasts longer).
Thanks.
Click to expand...
Click to collapse
Charge your phone when the phone says connect to charger and remove it when it says Fully charged.. this is the best way to charge your phone...
The battery is only supposed to last 50 charge cycles, before capacity is noticeably reduced. As above, don't leave it fully charged and don't let it go below 15%.
Sent from my GT-I9300 using Tapatalk
It wont matter if you leave your phone on the charger when it says fully charged since they have a cut off point so when it reaches 100% it will not continue to put power into the battery. That's why I charge mine overnight because when I wake up the charger is cold so I know it hasn't been charging all night
Sent from my GT-P5110 using xda app-developers app
Point to note on the above reply .
We on XDA first found that users left phone on charge overnight where reporting a dead unit . After a number of these posts it was recognized as what became SDS or sudden death syndrome .
Leaving on charge overnight is not the actual cause of SDS but something i don't risk any more fixes or not .
SDS seems to manifest in 2 distinct ways.
1) Complete eMMC failure. This usually happens over night whilst on charge* - The LED may be lit but the phone will not wake. Subsequent removal of the battery will turn off the LED. You will never get the LED back on. The phone will never turn on again. It needs to go to a service centre and have the motherboard replaced
* Being on Charge is NOT the cause. This is a writing to memory issue and it is more likely to happen when teh device is awake rather than in deep sleep. When the S3 is on charge, it holds a wake lock (so remains awake) throughout the entire charging period, meaning SDS is more likely to occur when on charge This does not mean you should avoid charging your phone. If it's going to happen, it's going to happen
http://forum.xda-developers.com/showthread.php?t=2091045
boomboomer said:
The battery is only supposed to last 50 charge cycles, before capacity is noticeably reduced. As above, don't leave it fully charged and don't let it go below 15%.
Sent from my GT-I9300 using Tapatalk
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Click to collapse
ya its a good thing to note, never to leave it charging even if the phone says charged, remove it as soon as phone says charged!!
Sent from my GT-I9300
I'm going to start charging mine while I'm at work. I normally charge it overnight but it seems from what I've read here that it's counterproductive.

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