Related
(I thought I asked this recently but can't find the post)
OK ... first off GPS / Nav works.
The issue is first off in car use cigarette plug charger, when as a phone only (or playing music via BT) all OK .. battery keeps topped up.
However if I use SatNav the battery cannot keep up .... even though it says charging it slowly discharges ..
I read here some car adapters don't give out full mA current, (that SGS can take) to be 100% sure, I went and bought a 1.5A USB adapter and still the same ... no problem until I switch on SatNav ... then it starts draining ... a couple of % every 15min.
I assume this is simply down to screen taking so much current .... but in very simple terms the phone should be able to keep up via charge when SatNav is enabled.
Anybody got a fix for this ? (screen dimming is enabled)
Ok seems that I am not the only one that is seeing this.
I've owned the S2 for a week and it feels very weird coming from HTC products.
It charges sloooooooow. Also I noticed that battery monitor shows weird values were on the Desire HD it was giving rock solid logical numbers in aspect of Voltage and current.
The s2 sometimes gives me 80% at 3,952 Volts and after a 40min drive 78% and ... 4,012 Volts. It is not stable at all
Just checking the stats in the batt monitor tool.
23:21 at 70% and 3,986 Volts while at 9:00 at 82% and 3,981 Volts.
It doesn't make any sense at all to me
From what I have read is that the charging controller of the S2 is only capable to charge up to a rate of 650mA while the HTC charged at 1000mA (0,65A vs 1A).
Now today I switched off wifi while driving and then it seemed to be very slowly charging. Give that a try and let us know.
Different types of chargers charge at different rates. Mains charges at 650mA, but USB and misc are around 450/550mA. If you're rooted you can change the charging currents in ExTweaks/Voltage Control/setCPU/whatever, however USB is limited as to what it can output anyway, and if you try and force too high a current through, things start to fry.
Sent from my GT-I9100 using XDA
You would not use a Mains charger when using SatNa
It would be a basic requirement that SatNav use in car would be able to keep charged with a USB charger.?
As the same micro USB port is used, how does, phone know its not on Mains?
In answer to above Q ..Wifi is off, I always turn it off when I enable BT.
Sargan said:
You would not use a Mains charger when using SatNa
It would be a basic requirement that SatNav use in car would be able to keep charged with a USB charger.?
As the same micro USB port is used, how does, phone know its not on Mains?
In answer to above Q ..Wifi is off, I always turn it off when I enable BT.
Click to expand...
Click to collapse
OK, that is an 'easy' one. The chargers 'shorten' the 2 data lines.
I've placed shorten between brackets because it doesn't do any harm at all.
I've you install battery monitor you can actually see 'usb connected' or 'ac charging'
As always using waze on my trip to work which takes about 50min.
Started at 58% and went up to 65% when I arrived.
lukesan said:
OK, that is an 'easy' one. The chargers 'shorten' the 2 data lines.
I've placed shorten between brackets because it doesn't do any harm at all.
I've you install battery monitor you can actually see 'usb connected' or 'ac charging'
As always using waze on my trip to work which takes about 50min.
Started at 58% and went up to 65% when I arrived.
Click to expand...
Click to collapse
Here is a simple Q then (maybe I'm naive) .. I am not using USB data port to charge, but a car USB charger point (no chance of any data)
Would charger manufacturers not have this 'short; in place as they are making chargers only ?
If not can you provide any details how to do this ... chargers have plenty of current, be good to get phone to use what it can of this.
dont know how to fix your issue but just to let you know its normal for the phone. Im always on my sat nav with a car charger and never been issues with losing any power. Quite often it comes off charge with more than it was plugged in with.
Hmmm.... I'm using original Blackberry car charger for both BB 9700 and SGS 2.
Yes, it charges slow, but with BT and GPS on it does gain on charge/percentage.
Sargan said:
Here is a simple Q then (maybe I'm naive) .. I am not using USB data port to charge, but a car USB charger point (no chance of any data)
Would charger manufacturers not have this 'short; in place as they are making chargers only ?
Click to expand...
Click to collapse
They should have but unfortunately they often seem to 'forget' it
If not can you provide any details how to do this ... chargers have plenty of current, be good to get phone to use what it can of this.
Click to expand...
Click to collapse
I have attached two photos showing an adapter I fixed myself. Look at the image 'charger-bottom-side.jpg' and notice the red circle. Within this circle you can see the short between the two data lines (D+ and D-). The short is simply a drop of tin-solder.
Sargan said:
Here is a simple Q then (maybe I'm naive) .. I am not using USB data port to charge, but a car USB charger point (no chance of any data)
Would charger manufacturers not have this 'short; in place as they are making chargers only ?
If not can you provide any details how to do this ... chargers have plenty of current, be good to get phone to use what it can of this.
Click to expand...
Click to collapse
As I said in my post. Install battery monitor and see if it says 'usb charging' or ac charging
lukesan said:
As I said in my post. Install battery monitor and see if it says 'usb charging' or ac charging
Click to expand...
Click to collapse
Which app is this (devleoper name ?)... and I'll get it ... just looked on market ... and there are 5 apps with this name.
Sargan said:
Which app is this (devleoper name ?)... and I'll get it ... just looked on market ... and there are 5 apps with this name.
Click to expand...
Click to collapse
3C
Sargan said:
Which app is this (devleoper name ?)... and I'll get it ... just looked on market ... and there are 5 apps with this name.
Click to expand...
Click to collapse
I have now purchased a new lead and charger (to be sure)
Running the App it shows "Charging AC Plugged"
It cannot keep up with current demand when Bluetooth & GPS active ... slowly discharges.
I have had the S2 for about a month now.
Seems like Sygic is the only GPS soft which I tried that doesn't hit the cpu 100% all the time.
I did a test over the weekend and with everything 'on' it slowly charged the phone.
yes
yeah, battery monitor will let you know that.
also suffered from this in the past
I have had the discharge problem using sat nav (Copilot live premium) and a car charger (various car chargers actually). Stock S2 with generic UK firmware. The problem exists on 4.03 and 4.04 - not sure about previous GB as updated to ICS as soon as I bought the phone.
I have found that if I apply battery save mode and turn down the screen brightness the charge just about holds station.
But the strangest thing I have found, although reading around I have not seen it mentioned elsewhere, is that if I enable mobile data the phone charges just fine whilst using sat nav. The problem only arises when I disable the data connection. This came to my attention whilst abroad where I deactivated data to avoid preposterous roaming charges.
This rather implies to me that something is trying to use the mobile data connection when it is deactivated and is causing battery drain when it can't. This could be any app of course, but the problem only rears its head when I use the sat nav (power hungry) with the mobile data turned off.
Has anyone else noticed this? Any advice on narrowing down which app/process this might be would be welcome.
Sargan said:
I have now purchased a new lead and charger (to be sure)
Running the App it shows "Charging AC Plugged"
It cannot keep up with current demand when Bluetooth & GPS active ... slowly discharges.
Click to expand...
Click to collapse
Sorry for bumping into this thread but I think I can help.
Correct me if I'm wrong, but I think your question is:
-Battery charging cannot keep up with discharging rate while using GPS and Bluetooth.
Reason for this problem:
-This occurs because usb charging further is lower than charging via wall charger, hence the battery heroes discharging when the demand is higher than the charging rate.
Solution:
-we need to increase usb charging current to equals the Ac charging current
How is that possible:
1.Root access is needed. If you don't already have root access key me know
2.custom kernel needed.
-You need to flash one of, Siyah, Dorimanx or dream kernel.
-Any of these kernels has the option to increase usb charging current
-move to 3. If you are already running any of the listed kernels.
3.after flashing the custom kernel, install extweaks from market.
-open extweaks
-under "misc", change the charging current to option 3.
Done
lukesan said:
I have had the S2 for about a month now.
Seems like Sygic is the only GPS soft which I tried that doesn't hit the cpu 100% all the time.
I did a test over the weekend and with everything 'on' it slowly charged the phone.
Click to expand...
Click to collapse
Swyped from my Samsung Galaxy SII
Jokesy said:
Reason for this problem:
-This occurs because usb charging further is lower than charging via wall charger, hence the battery heroes discharging when the demand is higher than the charging rate.
Click to expand...
Click to collapse
Wrong. Just read your own quote from Sargan's post:
Sargan said:
Running the App it shows "Charging AC Plugged"
Click to expand...
Click to collapse
Jokesy said:
Solution:
-we need to increase usb charging current to equals the Ac charging current
How is that possible:
1.Root access is needed. If you don't already have root access key me know
2.custom kernel needed.
-You need to flash one of, Siyah, Dorimanx or dream kernel.
-Any of these kernels has the option to increase usb charging current
-move to 3. If you are already running any of the listed kernels.
3.after flashing the custom kernel, install extweaks from market.
-open extweaks
-under "misc", change the charging current to option 3.
Done
Click to expand...
Click to collapse
I advise not to do that because:
It will not solve this problem as charging from AC is already detected by the device (see above).
The option is dangerous and will enable (if working at all) charging with the higher current limits from any USB port.
good to know
Jokesy said:
Sorry for bumping into this thread but I think I can help.
Correct me if I'm wrong, but I think your question is:
-Battery charging cannot keep up with discharging rate while using GPS and Bluetooth.
Click to expand...
Click to collapse
Actually in my case when using sat nav it will charge with mobile data enabled, but will discharge (whilst connected to the car charger/wall charger) without data enabled.
The forums are all filled with comments from (more or less experienced) people complaining that recharging their S3 might be at times strange with a certain ROM or another - and while maybe 10% of the time that might be indeed the case, in 90% of the cases it boils down to problems with CHARGERS and USB CABLES.
Right now it seems that the amount of power used for recharging is controlled primarily by S3 itself using at least 3 levels - of which at least two can be fine-tuned in software (and some kernels expose those features).
There is an "AC charger level" (set around 1000 mA), an "USB level" (set around 500 mA since USB1/2 standard does specify that) and a 3rd "low level / safety level" which seems to be around 50-100 mA.
The S3 seems to be choosing the level based on BOTH the charger and the USB cable used - and I have seen the same charger showing a different level with different USB cables, and the same USB cable showing a different level with different chargers. I have even seen one AC charger that with a very specific cable (not the one bundled with it) was showing "charging/USB" inside the S3, while all other cables on the same charger were showing "charging A/C".
So when your S3 charges very-very slowly your very first check should be with another USB cable, and second check should be from a different charger or USB port - instead of posting same questions again and again around here
IMHO the absolute safest charging combination right now is with the original Samsung USB cable from the USB port (ideally in a good notebook - good notebooks have very effective USB protection, and some - like the Thinkpad models - have an USB port that can power something even when the notebook is stopped, and with one extra BIOS setting even when the notebook is stopped and not connected to A/C)! This is not the fastest charging combination - and with an extended battery it might take like 9 hours for a full-full charge (4 hours with normal battery) - but is most likely the safest (simple) one! Also by charging with a smaller current the heat generated is (much) smaller and the "aging" of the battery is drastically reduced.
If you are in a huge-huge hurry you might want to use the original Samsung A/C charger plus the original Samsung USB cable, but don't "overdo it" by trying forced/exotic solutions/chargers - we even have an entire thread around here at XDA with "sudden death" cases - most of them observed in the morning after the i9300 was left overnight in some A/C charger
EDIT:
Also if you see a very-very slow charge (or even a discharge) while you are "charging" but you have the screen ON and the CPUs running at full speed you should know that is possibly normal - since screen ON + CPU at 100% is draining more than 500 mA (= probably most of, or more than you are getting from the cable); try to lock the phone or even power it off, and then after 20 minutes see if the battery is better and by how much.
EDIT2:
As a far later step if everything else fails you should also check if the pins inside the USB connector in the S3 are not bent in any way, but that is slightly more advanced and might not be perfectly fixed without replacing the connector.
Also if your phone has other serious hardware problems (cracked screen or so) you should mention that first.
EDIT3:
My stuff above was "educated guess" - now we also have 'hard technical data":
http://www.maximintegrated.com/app-notes/index.mvp/id/4803#5
Nice topic thanks for comprehensive content. I have been experiencing slow charges since i get my S3. I read about a guy, whos charging cable is officially changed by Sammy with a 5-pinned one, and fortunalately found a same type of cable. Since i started using that cable full charges take approximately 2 hours while using the original one results in 4 hours or so.. I also informed my local samsung service about the issue but they refused my explanations saying that there is no such an official report about the faulty original cables.
I was frustrated about dischages while playing games when the phone is plugged in. IMO this is one of the biggest fail for a phone to be discharged while plugged in.. But now it is completely fixed.
Sent from my GT-I9300 using xda premium
ggnoplay said:
Nice topic thanks for comprehensive content. I have been experiencing slow charges since i get my S3. I read about a guy, whos charging cable is officially changed by Sammy with a 5-pinned one, and fortunalately found a same type of cable. Since i started using that cable full charges take approximately 2 hours while using the original one results in 4 hours or so.. I also informed my local samsung service about the issue but they refused my explanations saying that there is no such an official report about the faulty original cables.
...
Click to expand...
Click to collapse
The math is just right - 2000 mAh battery = 500 mA * 4 hours = 1000 mA * 2 hours.
My original usb + charger takes 5 to 8 hours and it has 5 pins !!!!
also I tried another 5 pins usb with the same original charger and it takes around 2:30 to 3:30 hours
So I need to buy a 5 pin usb one but how to guarantee it will work ????
xclub_101 said:
IMHO the absolute safest charging combination right now is with the original Samsung USB cable from the USB port (ideally in a good notebook - good notebooks have very effective USB protection, and some - like the Thinkpad models - have an USB port that can power something even when the notebook is stopped, and with one extra BIOS setting even when the notebook is stopped and not connected to A/C)! This is not the fastest charging combination - and with an extended battery it might take like 9 hours for a full-full charge (4 hours with normal battery) - but is most likely the safest (simple) one! Also by charging with a smaller current the heat generated is (much) smaller and the "aging" of the battery is drastically reduced.
Click to expand...
Click to collapse
I agree with this... in one night i used to recharge my S3 with a Blackberry Charger. Guess what? The digitizer went up like crazy, started to write crazy stuff (just 'zeroes' 00000). i immediately dissconected the charged and the digitizer when back to normal.
zeromant said:
I agree with this... in one night i used to recharge my S3 with a Blackberry Charger. Guess what? The digitizer went up like crazy, started to write crazy stuff (just 'zeroes' 00000). i immediately dissconected the charged and the digitizer when back to normal.
Click to expand...
Click to collapse
Yes, I have also seen something similar once with a very bad low-cost Chinese charger.
I also wanted to add some "hard" info to this thread - my stuff above was "educated guess" but in the meantime the full info become available and I added a link below with it (coming recently from the Perseus kernel thread) - as it can be seen from there there are basically 3 modes (but with the first one by default starting in 100mA, so this one should be either 100 if something goes wrong or go to 500mA).
http://www.maximintegrated.com/app-notes/index.mvp/id/4803#5
This is a very informative post. Recently I have been experiencing weird battery behavior on my s3 as well and wanted to investigate further.
I have 2 original Samsung batteries and using an original Samsung OEM charger to charge my S3 and Grand i9082. (both uses same 2100mah battery)
Now both the batteries and the charger charges and holds the current fast and long in case of grand i9082. (gives me more than 24 hrs on average usage and almost a day with wifi, cellular data on for dual sim, along with moderate messaging and youtube) no Issues at all on both these batteries and charger.
On my s3 it's a different story.
In 2-3 hours the same batteries die if I watch a movie on s3, it goes from 100 to 10.
(on airplane mode. lowest brightness, maximum wakelocks restricted, google services frozen, Maximum CPU frequency down to 400mhz settings enabled)
if I use it just for calls and moderate messaging, it last 12 hrs.
on airplane and standby mode together, it goes on for 24 days.
weird thing is If the device goes below 30% battery and I plug in the AC charger, and use the phone, the battery would still be discharging instead of charging.
on safe mode, the battery will neither go up nor go down, no matter how long I keep using it while connected on charger, it would stay at the same 10%.
while if I plug in for charging while it's above 30%, and keep using it, it would be charging normally.
sometimes the s3 would treat the AC charger as a Normal USB cable, while if I remove and put it back again, it would show me charging/AC.
Now going through this post
"There is an "AC charger level" (set around 1000 mA), an "USB level" (set around 500 mA since USB1/2 standard does specify that) and a 3rd "low level / safety level" which seems to be around 50-100 mA."
Great find. actually. what I conclude from this post and in my case, the s3 while it goes below 30% it fails to charge/ or chooses not to charge on "AC charger level" and would always choose the "2nd USB level" or the "third low level", resulting in drain while using the device at the same time, while if left idle it would slowly charge on the 2nd and 3rd level until 30% then moving on to the actual AC charger level at 1000.
this issue I guess can be sorted out with some kernel side changes.
perhaps setting a lower Maximum boot CPU frequency (1000mhz?) and a lower default GPU frequency.(this can also sort out few heating issues) and lower default brightness level as well (or maybe not, it's just a hunch and I am no master myself.)
Anyways thanks for the useful input.
Hello,
when the tablet was in the charger with 1000 mAh and my GF was playing plant vs zombies 2, it was not enough and was dead in 2 hours. So I put there the official charger 1500 mAh but then still it was not enough and was dead again.
Right now I tried to turn off the Location, Wi-Fi and she is playing. But is this normal??? Jesus you should be able to play with all the functions turned on and in the charger, not???
Edit: so it was emptied again even with everything off...
Edit2: i will try the origin cable because I used a different one
Stirius said:
Hello,
when the tablet was in the charger with 1000 mAh and my GF was playing plant vs zombies 2, it was not enough and was dead in 2 hours. So I put there the official charger 1500 mAh but then still it was not enough and was dead again.
Right now I tried to turn off the Location, Wi-Fi and she is playing. But is this normal??? Jesus you should be able to play with all the functions turned on and in the charger, not???
Edit: so it was emptied again even with everything off...
Edit2: i will try the origin cable because I used a different one
Click to expand...
Click to collapse
Did it show the charging icon while she was playing the game? I'm curious if it might be plugged but not recognizing that it should be drawing power from the charger...
Because charging cables are differently wired, you MUST either use the original cable or a cable which is definitely known to have the same wiring as the original one.
hasenbein1966 said:
Because charging cables are differently wired, you MUST either use the original cable or a cable which is definitely known to have the same wiring as the original one.
Click to expand...
Click to collapse
Differently wired how? I didn't realize there were wiring differences, please elaborate if you can, feel free to get technical.
I tried plugging my Z2 Tablet into a USB cable from a powered hub (computer off though), which I've used to charge my phone and my Kindle, and I know it wouldn't have much power, but it wouldn't charge at all, no charging icon, nothing. I've had no trouble charging it with a dedicated charger though.
~Troop
So yes,
1. the charging icon is there
2. I even logged the history and during playing the plant vs zombies 2, the power is oscilating around +- the same level but still going down slowly as a trend
3. I tried today to get the power back to 25% and now I am charging it. I have the battery widget where it shows getting mA about 390 to 890 maximum. But even it is the original charger, original cable and the charger is 1500 mA it seems that the maximum level is 890???
Can someone else try Batter monitor widget what they get from it???
Edit:
It sucks. It announced even today DURING charging from the original charger and cable that the charging is not strong enough. Wtf?
Edit2:
Here they say it is charged under 3 hours. Not my case :-/ http://www.digitalversus.com/tablet/sony-xperia-z2-tablet-p19609/test.html
Ha, that is really funny. I am from the Czech Republic and called the Sony support. They forwarded me to Xperia support. At Xperia support the girl said that she cannot provide me exact information because official release date here is 8th of April so she doesnt have the manuals etc.
Then my type is 511E3 which she again was absolutely no aware what is the type because I should have 621 or maybe 521 but not 511.
So I can try the support line next week with the question how many mA should go to the tablet during charging.
But what she said was also that the charging time could be up to 6:20. But more than 6 hours? Maybe it was about the Z1 model? And also told me that playing games with the charger will still result in draining the battery.
I need some other guys here who can test it with playing some games and check the mA during charging...
I don't have a Z2, but just wanted to mention that cnet saw the same (no charge while playing) in their review: "[..] the tablet lost power even when it was plugged in to the mains" http://www.cnet.com/products/sony-xperia-z2-tablet/2/.
I never experienced any of this. There's probably a problem with your unit.
zpon said:
I don't have a Z2, but just wanted to mention that cnet saw the same (no charge while playing) in their review: "[..] the tablet lost power even when it was plugged in to the mains" http://www.cnet.com/products/sony-xperia-z2-tablet/2/.
Click to expand...
Click to collapse
bbarou said:
I never experienced any of this. There's probably a problem with your unit.
Click to expand...
Click to collapse
And have you tried to charge it during heavy playing of some game? Which game, how long?
Can you test how much mA are you getting from the charger inside the tablet (battery monitor widget can do this)
I tried it yesterday playing "The Cave" for about 1 hour. Tablet was charging using a four port no name charger and a different cable the that the one provided.
I did not really check for anything , I just noticed the tablet got mildly hot.
I did not measure the current while playing, but I did earlier this week-end though.
I tested 3 chargers plus the provided one. A Galaxy S III charger, An ASUS TF300 and the 4-port no-name I used yesterday.
If I recall correctly I got around 0.9A from the GS3 and original charger and around 1.2A from the TF300 and 4-port ones.
I do some more thorough testing and let you know. I use a device on the charger output to measure how much current is coming through.
How long do you guys charge the tablet? I started with about 19% and to full 100% it was like 7-8 hours. It was turned on without wifi (stamina mode). I will try to charge it while turned off but still it is strange...
I dont know. Battery life is ok but the charging sucks for me. Any ideas if it is just me?
Stirius said:
How long do you guys charge the tablet? I started with about 19% and to full 100% it was like 7-8 hours. It was turned on without wifi (stamina mode). I will try to charge it while turned off but still it is strange...
I dont know. Battery life is ok but the charging sucks for me. Any ideas if it is just me?
Click to expand...
Click to collapse
Yawn... Please use the charger and the cable which come with the device (which I bet my grandma on you didn't)! Other chargers or cable have either too low current or wrong wiring (which disables fast charging) or both.
The charging time over USB is 4-5 hours, like the first generation Tablet Z.
Yawn, yawn, if you took a look then you would read from this topic that I use original cable and original charger.
If the battery is 6600 mA and charger 1500 mA then the minimum for charging is 4,3 hours approximately. And as I said my maximum charging is 890 mA. So either something is taking 600 mA during the charging or the charger is bad or the cable is bad or I dont know.
But if it is in the stamina mode and still the maximum charging is 890 mA then something is weird.
I am asking now for about 5 times. Could somebody test during charging how many mA is going into the tablet? (You can use Battery Monitor Widget from google play).
Neither Xperia support is able to give me clear answer because the Tablet was not officially released here (which is funny, I have it).
Thank you.
Stirius said:
Yawn, yawn, if you took a look then you would read from this topic that I use original cable and original charger.
If the battery is 6600 mA and charger 1500 mA then the minimum for charging is 4,3 hours approximately. And as I said my maximum charging is 890 mA. So either something is taking 600 mA during the charging or the charger is bad or the cable is bad or I dont know.
But if it is in the stamina mode and still the maximum charging is 890 mA then something is weird.
I am asking now for about 5 times. Could somebody test during charging how many mA is going into the tablet? (You can use Battery Monitor Widget from google play).
Neither Xperia support is able to give me clear answer because the Tablet was not officially released here (which is funny, I have it).
Thank you.
Click to expand...
Click to collapse
Dude, then simply go and exchange the charger if it is faulty. No need to make long XDA threads out of that.
hasenbein1966 said:
Dude, then simply go and exchange the charger if it is faulty. No need to make long XDA threads out of that.
Click to expand...
Click to collapse
Its not about charger. Or maybe it is. I want to know exactly how many mA are going to the tablet during charging. Nobody was able to give me the answer.It could be faulty charger, faulty cable, messy apps in the tablet (which I doubt) or whatever.
And Sony support, Xperia support is not able to give me clear answer to this. And also another guy in a review had similar problem. If we are in a Z2 Tablet topic then I supose that this is the right place to ask such questions... Not?
You can't just do 6600 divided by 1500. You are losing current all over the place when charging. It will probably be at least 50% wastage in heat, resistance in the wires etc etc. Also, the charger may say it does 1500, but that is peak when it's brand new under perfect conditions and the internal components will age and become less efficient over time too.
If you are using the tablet for a game, it will be running the processor at max power and drawing lots of current and all the heat it generates from the cpu and the battery during this time is wasted energy don't forget. If you want to battery to charge, you will need a charger that provides enough current to power the tablet and another 1000ma or so on top of that to charge your battery.
I bet Sony will state somewhere that you can only use it for low power activities like watching videos while on the dock if you want the battery to charge.
Sent from my GT-P5110 using Tapatalk
My portable power meter seems broken so I cannot give you actual current draw measured in series. All I can do is paste output from Battery Monitor Widget.
All tests done with the official USB cable bundled with the tablet and screen ON at minimum brightness. Screenshots from Battery Monitor Widget.
Code:
Battery only: -721 mA (-10.79%/h)
Official charger (1500mAh): +719 mA (+10.76%/h)
PC USB3 port: -48 mA ( -0.71%/h)
No-name Chinese AndroidPC Charger
Model LA-520 (2000mAh): +1060 mA (+15.86%/h)
Energy Sistem K128 Charger (2100mAh): +960 mA (+14.37%/h)
brugobo said:
My portable power meter seems broken so I cannot give you actual current draw measured in series. All I can do is paste output from Battery Monitor Widget.
All tests done with the official USB cable bundled with the tablet and screen ON at minimum brightness. Screenshots from Battery Monitor Widget.
Code:
Battery only: -721 mA (-10.79%/h)
Official charger (1500mAh): +719 mA (+10.76%/h)
PC USB3 port: -48 mA ( -0.71%/h)
No-name Chinese AndroidPC Charger
Model LA-520 (2000mAh): +1060 mA (+15.86%/h)
Energy Sistem K128 Charger (2100mAh): +960 mA (+14.37%/h)
Click to expand...
Click to collapse
Thanks a lot!
So it just means that in general with the original charger you are able to get to 10-13% per hour. So in average usage 9 hours of charging, heh. I saw yesterday (have to check it at home) that I had also around 20% per hour.
But in general these figures are normal and the usage of a battery with a little bit more heavy tasks is not very good. And charging can take a LONG time. I tried to charge it while turned off and I think you can get there below 6 hours.
Stirius said:
Thanks a lot!
So it just means that in general with the original charger you are able to get to 10-13% per hour. So in average usage 9 hours of charging, heh. I saw yesterday (have to check it at home) that I had also around 20% per hour.
But in general these figures are normal and the usage of a battery with a little bit more heavy tasks is not very good. And charging can take a LONG time. I tried to charge it while turned off and I think you can get there below 6 hours.
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mm.after read all of reply above, it is quite weird that only get 800mah while using 1500mah support charging cable? Maybe can try better quality of cable and also the power source, it is very crucial to get that. I have try some trial and error with different cables and charging with my galaxy s3, i find that with good quality of cable, i managed to get 1000mah max , but if using with cheap cable or power bank, i only managed to get 400-800mah. even after a long time using the original s3 cable, it will reduce to only 600mah. So my advice is try charging with different cable and find the best cable to charge ur device, if it is 1500mah supported, so i think it should be support to 1500mah. Thank you.
yonghong said:
mm.after read all of reply above, it is quite weird that only get 800mah while using 1500mah support charging cable? Maybe can try better quality of cable and also the power source, it is very crucial to get that. I have try some trial and error with different cables and charging with my galaxy s3, i find that with good quality of cable, i managed to get 1000mah max , but if using with cheap cable or power bank, i only managed to get 400-800mah. even after a long time using the original s3 cable, it will reduce to only 600mah. So my advice is try charging with different cable and find the best cable to charge ur device, if it is 1500mah supported, so i think it should be support to 1500mah. Thank you.
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No, it is not weird at all since the tests were done with the screen turned ON, draining half the power.
The first line, battery only, tells you how much the screen and semi idle state is draining, with brightness at minimum. Cranking brightness up to maximum increased an extra 2.5% per hour drain if I recall correctly.
Charging with screen off would be about 20% per hour, or 5 hours to fully recharge. More or less in line with what people is reporting.
Code:
Battery only: -721 mA (-10.79%/h)
Official charger (1500mAh): +719 mA (+10.76%/h)
So, 721+719= 1440 (+21%/h), pretty close to the rated 1500 for the charger.
Hi, I'm coming from an SM-930F and now have a SM-965F. I'm experiencing a strange charging behavior. I became aware of this when noticing that the S9 plus when connected to my Aukey QC 3.0 charger in my car via the OEM cable (screen on and GPS active) can only hold, but not increase the battery level. This was completely different with my S7 (same charger) which achieved an increase in battery level of 30% per hour, all other things equal. I now did some tests with a plug power meter and found that the charging current goes down immediately when the screen is switched on by roughly 75%. The charging power decreases from 6-7 W to 1.5 W. Please note that this is the gross current/power flowing from the wall socket to the device. With the energy consumption of the display, the net current flowing into the battery is negligible which explains the observation above. Interestingly, the effect is also present with the Qi charger, but to a much lesser extent (only 20% reduction of charging current with screen on). The S7 does not behave this way.
Has anybody observed similar effects or could check with his/her own device? Is this an intended behavior? Does this mean that - effectively - the S9 plus cannot be used while charging?
Best regards
Christoph
I have a USB multimeter and have checked several phones of mine.
This behavior is inherent to Qualcomm Quick Charge. I came to the S9+ from a Droid Turbo 2, both exhibited the same behavior.
Also i've never seen voltage spike above 9V, even though it's supposed to go up to (in theory) 12v (QC2.0)
Samsung support told me that this was not normal. I sent the device to them now. We'll see whether this will make a difference.
machristoph said:
Samsung support told me that this was not normal. I sent the device to them now. We'll see whether this will make a difference.
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1.5W is waayy too low for modern smartphone, I'm averaging about 5W with the regular "cable charging" status.
I'm having issues trying to trigger the fast charging mode on my S9+ with the variety of QC2/3 capable chargers that I have laying around. Just bought a voltmeter to do more testing to see what's going on with these chargers.
I don't even get consistent result using Samsung's charger and cable, so I'm wondering if my port is jacked.
Samsung phones don't fast charge when the screen is on, but it shouldn't drop as much as you're seeing. It should work pretty much as the S7 did.
Hi folks,
I still have an issue with the charging behavior of my S9+ and, as time has gone by and I have collected some more information, I am seeking your advice again.
My problem is that cable chargin while screen is on is more or less impossible.
This is not about fast charging not working. I am aware that fast charging is not fully operational while screen is on.
But 9 out of 10 times my phone does not charge at all while screen is on when connected by cable.
However:
- Charging on QI charger with screen on is working.
- Cable charging with screen off (even with always on display switched on) is working normally (not superfast, but roughly 30% per hour which is ok for me)
- Even with screen on, status bar notification says that fast charging is active and gives "normal" estimated charging times. But the battery level won't increase over time (or only with very low rates).
I already tried various chargers and cables without any effect.
I resetted the phone for several times. I verified that the behavior described above also occurs with a plain phone without any Google or Samsung account or any other apps than stock installed.
Brightness of screen does not really matter (with lowest level you might get very slow (1% per hour) increase in battery life, with highest level it is closer to -1%/h).
I even sent it to the support where they told me they could verify and fix the problem --> without any effect.
I changed the phone. Unfortunately, the new one first seemed to work flawlessly, but showed the same behavior after some cycles.
Interestingly, sometimes (1 out of 10) cable charging with screen on is working at least somehow. Some days ago, I could increase batterery level by roughly 10% within one hour. But I could not repeat that.
I attach screenshots of GSam Battery Monitor which show that charging rate goes down as soon as display is switched on.
Do you have any ideas? How is your phones charging behavior while screen is on?
Best regards,
Christoph
I'm just speculating on this but I always was under the assumption it turns down the charging rate due to heat, having the screen on, GPS going, etc heats the phone. The newer models seem to be more sensitive to it and throttle back faster.
My dock sits on up on the windshield and it doesn't take much when it's sunny out for the phone to stop charging all together, it overheats when running GPS, screen on and the sun is hitting it. I need to find a new mount to move it lower down on the dash...
Thanks for your reply. I also suspected that temperature could play a role here. But I have not been able to verify that yet. Attached you'll find also battery temperature for the charging cycle shown in my previous post. I also let sit my phone in the fridge for a couple of hours before charging without any significant effect.
On the other hand, I find charging rate to be lower on hot, sunny days. Today, with cloudy sky, I could increase battery level by 4% during my 30 minutes commuting time. Thus, if there is a relationship with battery temperature, it's not a simple linear one...
I had to move my phone mount recently because of some changes I made to my car, previously it sat in front of the AC vent and I didn't have issues, now it's not and that sucker overheats and stops charging in no time when it's sunny out. If you can position it where a vent is blowing cold air on it, it should help.
Unfortunately it's already sitting there...
Hi,
I have a charger with a qualcomm QC 3.0 port and other regular 9V 2A ports, so I have the same problem when my phone is connected to QC port, but for some reason it's charging normally when connected to the regular ports.
My phone is the european exynos version.
Interesting, mine is the exynos version, too. I'll try to test a regular port, too.
And also good to know, that I'm not the only one with similar problems...
basically I have the s23 ultra, the 313 ace charger 45w . and a 5A /100w cable ..
past 3 days it says "super fast charging 2.0" and displays the blue circle. for the duration of the charge..
now 5 hours ago, I plug in and see the blue circle, and the super fast charging 2.0 but after about 15 seconds it displays the green circle and says " fast charging"
I unplug and replug .. same thing happens..
so my question to the L337 developers on the site, can you force the phone to quick charge 2.0 with an app? or some setting hidden in some secret dev window?
I know the hardware can handle the charge and I've changed zero settings in the phone so it's definitely a deep seeded software issue. I've cleared the cache , double checked basic toggles. I'm lost.
There may be nothing wrong.
Phone throttles down charging based on battery charge level. When battery gets above certain level it will no longer charge at full speed.
OnnoJ said:
There may be nothing wrong.
Phone throttles down charging based on battery charge level. When battery gets above certain level it will no longer charge at full speed.
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I started the charge at 20% .. so you're saying the phone decided to limit the charge to 15w because it was above what exactly? 21% ?
back to my original question.. phone starts at super fast charging 2.0 , and then 15 seconds later it throttles to "fast charging" .. is there a way to force the super fast charging 2.0 protocol because the software is whats limiting it.
Just get the original Samsung charger brick.
mittymak said:
I started the charge at 20% .. so you're saying the phone decided to limit the charge to 15w because it was above what exactly? 21% ?
back to my original question.. phone starts at super fast charging 2.0 , and then 15 seconds later it throttles to "fast charging" .. is there a way to force the super fast charging 2.0 protocol because the software is whats limiting it.
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You didn't report the charging levels, hence my 'may...'.
Anyway, 20% is too low.
I do not know the exact levels (did not conduct a thorough test), but at least at 70% with my samsung 65W charger (Galaxy Book2 360pro) and 100W cable there is no more Super Fast Charging 2.0. I have S918B/DS, CSC EUX, SFC is there at least below 50%, no software limitation there...
What is limiting your charging I can't tell (Charger, Cable, Phone SW/HW...?)