I posted this in Perseus thread too, but unfortunately i didn't receive any answers.
Guys, my gf will be getting a 2.1A + 1.0A dual usb charger because her old one died, what is the safe limit for the charging control so i don't fry her S3?
Will it be ok around 1400mah?
Thanks.
I suggest you stick with stock value which is 1000 mA over wall charger and 475 mA over USB.
In theory, yes, the i9300 can take with maximum up to 2100 mA but I'm sure nobody will recommend it.
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qtwrk said:
I suggest you stick with stock value which is 1000 mA over wall charger and 475 mA over USB.
In theory, yes, the i9300 can take with maximum up to 2100 mA but I'm sure nobody will recommend it.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
So you think going above 1000mah could be dangerous to the device?
The charger supports 2.1A, or atleast that's what it says.
(When i had an S3 too, i set usb input charge to 850mah because i had usb 3.0 on my pc and it was charging just fine!Don't know if it matters or not though.)
nfsmw_gr said:
So you think going above 1000mah could be dangerous to the device?
The charger supports 2.1A, or atleast that's what it says.
(When i had an S3 too, i set usb input charge to 850mah because i had usb 3.0 on my pc and it was charging just fine!Don't know if it matters or not though.)
Click to expand...
Click to collapse
I know, the chargers for tablets such as iPad has output capacity of 2100 mA.
And I think, stock value set to 1000 mA is for good reason like archive minimum charge time and less dangerous to the device and battery.
One thing I sure is that, if you charge with 2.1 A, your battery will probably heat up like hell, and that high temperature is NOT GOOD for Li-ion battery as we have for i9300.
For myself, I always set it down to 800 mA for over night charging (I guess you won't set up a alarm in the middle of night to wake you up to unplug the charger, will ya? ). And I do use 2.1 A charging, in case of EMERGENCY like I have to go out for long time and my battery is low so I have to make the battery charged as much as I possibly could. But still, it is NOT recommended.
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Related
Hey guys
I was wondering , since it takes this phone over 3 hours to fully charge... If I buy a Nokia charger with an output of 1.2 mah ,would it take a shorter time for this phone to charge? Its own charger has 0.7 mah output..
No. SGS2 has a capped charge rate of 650 as far as I know.
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GTI9100 KK5
yes but it might get hot. i used to charge with playbook's charger all was well. but now i use the samsung S2 charger. but i never checked if it was charging faster
Ok, thank you both
atifsh said:
yes but it might get hot. i used to charge with playbook's charger all was well. but now i use the samsung S2 charger. but i never checked if it was charging faster
Click to expand...
Click to collapse
Charging is controlled by the phone only and varies depending on whether it detects a USB data link or not. And the battery temperature.
So, provided the charger is rated at 700mA or greater, the phone will charge at the fastest rate it sets. On USB, the charge rate is lower. USB 2 ports have a maximum of 500mA output... and if the phone is on, the charge rate is often lowered further.
I use an iPAD2 charger for convenience, which is rated at 2A. The phone charges fine, but only at the same rate as the stock Samsung charger.
LenAsh said:
Charging is controlled by the phone only and varies depending on whether it detects a USB data link or not. And the battery temperature.
So, provided the charger is rated at 700mA or greater, the phone will charge at the fastest rate it sets. On USB, the charge rate is lower. USB 2 ports have a maximum of 500mA output... and if the phone is on, the charge rate is often lowered further.
I use an iPAD2 charger for convenience, which is rated at 2A. The phone charges fine, but only at the same rate as the stock Samsung charger.
Click to expand...
Click to collapse
thanks for the info dont know about S2 but i know few brands allow that. blackberry is one of them, using playbook charger on their phones charge them faster but battery gets hot.
I cant find the exact post to link it for you but I'm sure the devs had a discussion about it in the siyah dev thread.
Mains capped at 600 by the device.
http://forum.xda-developers.com/showthread.php?t=1263838&page=1406
----------------------
GTI9100 KK5
Well, I needed more actual facts than technical stuff. So the idea is not to buy the nokia charger cause the sgs2 wont charge faater. This sucks. HTC evo 3d battery charges to full in abou 1,5 hours and it lasts enough so...I really dont understand samsung
In my ROM there is an option to enable fast charging. If you enable that, a charger with a higher mAh will make sense.
Probably the heat issue is the main reason for not implementing a higher charge rate. Battery degradation world be another.
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I don't think you should use a bigger charger with a higher voltage to charge your phone, the battery for your SGS2 might not be able to handle the amount of voltage from the charger
MacBreQ said:
In my ROM there is an option to enable fast charging. If you enable that, a charger with a higher mAh will make sense.
Click to expand...
Click to collapse
Thanks but I prefer stock roms
It will affect the life of the battery or there is no difference between chargers?
Thank you!
Yes
But,
SGS2 charger rated @ 5V/0.7A
SGS3 charger rated @ 5V/1A
Meaning: Using the SGS2 charger with the SGS3 phone will charge at only 70% the rate > ie take longer..........
Edit: No, it will not affect the life of your battery, could even possibly extend it as the battery is affected by less heat generated.
Then I guess the same applies to using the charger of the SGS for the S III. That charger is also 0.7A.
(I'll be using it since it has a longer cord. The charger of the S III doesn't reach from the outlet to my night stand...
Just buy a longer USB cable that's all i did.
if anyone is ever stuck without their original charger i can confirm i have used my wifes old blackberry charger. my sons galaxy ace charger. and an iphone charger with micro usb cable plugged into it. all worked fine on both my s2 and now my s3. as long as it is micro usb and not crazy high amperage it should be fine.
So as long as amperage isn't too much over 1A, all is ok?
Greetings,
Evert
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evert said:
So as long as amperage isn't too much over 1A, all is ok?
Greetings,
Evert
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Apparently the SGS3 limits the charge rate to 1A max on AC charge.
SiyahKernel plus the extweaks app have an option to increase this limit.
Personally, I have never tried it, and don't particularly wish to.
So to answer your question, theoretically, the phone will limit the charge rate to 1A whether you're using a higher capacity charger or not. Most likely to protect the battery and charging circuit from damage.
Sent from my GT-I9300T using xda premium
I'm using the S1's one at the moment...same thing really, as the above poster said, might charge slower though.
UpInTheAir said:
Yes
But,
SGS2 charger rated @ 5V/0.7A
SGS3 charger rated @ 5V/1A
Meaning: Using the SGS2 charger with the SGS3 phone will charge at only 70% the rate > ie take longer..........
Edit: No, it will not affect the life of your battery, could even possibly extend it as the battery is affected by less heat generated.
Click to expand...
Click to collapse
This is wrong mate.
You CAN use the charger from the S2 even though it is rated 0.7A. It actually is capable of putting out more than that. You can use current widget to check this.
I have checked and on the S2 charger, the S3 draws 0.999A same as on S3 charger..
However, using it for prolonged periods will probably result in a damaged charger. I would use it only in emergency.
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KennyLegend said:
This is wrong mate.
You CAN use the charger from the S2 even though it is rated 0.7A. It actually is capable of putting out more than that. You can use current widget to check this.
I have checked and on the S2 charger, the S3 draws 0.999A same as on S3 charger..
However, using it for prolonged periods will probably result in a damaged charger. I would use it only in emergency.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
I never said you couldn't, just said it would take longer
My official SGS2 charger IS rated at 0.7 A (yours may be different), confirmed but not tested with a ammeter, which would be much much more accurate than any widget.
Can't borrow one from work unfortunately...
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UpInTheAir said:
I never said you couldn't, just said it would take longer
My official SGS2 charger IS rated at 0.7 A (yours may be different), confirmed but not tested with a ammeter, which would be much much more accurate than any widget.
Can't borrow one from work unfortunately...
Sent from my GT-I9300T using xda premium
Click to expand...
Click to collapse
Apologies... Just read ur post again.
It won't take longer either as the S3 draws what it needs. The S2 charger will give out 1A although not sure how long it will last longterm.
I've used "current widget" and on quite a few phones now and it's pretty good. It might not be 100% accurate but it's not that far out. On my S2 the different charge modes in Siyah kernel could easily be seen in current widget. Same with my S3... Current widget reads same whether I use my new or old charger..
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Michael_P said:
Just buy a longer USB cable that's all i did.
Click to expand...
Click to collapse
Is that safe? From what I get from http://en.wikipedia.org/wiki/Usb#Power , no more than 0,5A is expected to travel through a USB cable.
Is the cable we get from Samsung perhaps made for the 1A? It is quite a bit thicker than most other USB cables I have...
can i use sgs3 charger for sgs2?
Ghostface22 said:
can i use sgs3 charger for sgs2?
Click to expand...
Click to collapse
Yes , the device will only take what it needs.....no matter what the output amps are.
Devices are built to limits their input current.
Sometimes I use data cable from old Samsung to transfer data or charge.Still no problem.:good:
I've only ever used my S1 charger or my old S2 and now S3. Every so often I use a Nokia cable paired with my galaxy tab 10.1 charger and haven't had any problems.
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Most devices won't draw more than they need. I've used anything from a 0.3A charger through to a 2A charger... in my experience the S3 doesn't charge any faster on the 2A, but it definitely charged slower on the 0.3A (perhaps because it was limited to a max output, I may have to see what this "current widget" says.
Here's the catch though, it will charge faster on a higher amperage during heavy use, than it would on a lower amperage.
how long s3 make to do full charge, i bought un old one, & after 2 hours il indicates 75% only??
I charged mine for about 2 to 3 hours.
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Charge time zero to 97% 3 plus hours .
jje
Wondering if anyone has tried it? I remember reading that the wall charger from my Tab 10.1 was more powerful than for the phones because it would take FOREVER to charge. Wonder if it's compatible with our S3?
Anyone?
I believe that anything that charges on USB is just getting 5 vt, so any charger would work with any phone/tab if it is charging through USB. I would guess that the wall chargers are also putting out 5vt and would therefor be fine with any mini USB plug charging device.
Easy to check, plug it in and see how it works. (Buy insurance first )
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
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gyrra said:
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
An hour, eh? Nice. I thought it would charge faster but not that fast.
And im definitely talking about the using an outlet, not usb.
Thanks for the confirmation!
No problem,
I knew you meant the AC charger, and that's why I posted. USB charging is slow until someone adds in the fastcharge ability to a kernel for our s3's
Glad I could be of help.
Sent from my SPH-L710 using xda premium
Gave you your first thanks!
if this helps i used a blackberry charger and it worked.. i have had no issues.
(DEL)
lostsoul565 said:
if this helps i used a blackberry charger and it worked.. i have had no issues.
Click to expand...
Click to collapse
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
tony yayo said:
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
Click to expand...
Click to collapse
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
crabapples said:
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
Click to expand...
Click to collapse
Basically youre saying the phone itself wont pull in anymore draw than it knows it can handle. So I guess if it does charge faster than great. Long as it dont fry im happy!
Always when I'm using my S3 with Navigon, it discharges when connected with car charger.
I am using an original car charger by Samsung. Rom is in signature. Temp when navigating is around 48°C.
All of these things just let the discharging cycle last longer, but it is not gone. I know the problem from S2, but nothing helps on my S3. The problem just exists with Navigon.
What I tried:
- different charger
- set CPU freq to max 500 MHz when navigating
- Display brightness to min when navigating
- Set AC in Extweaks from 1000 to 1200 for testing purposes
Any suggestions from experts?
shorty1483 said:
Always when I'm using my S3 with Navigon, it discharges when connected with car charger.
I am using an original car charger by Samsung. Rom is in signature. Temp when navigating is around 48°C.
All of these things just let the discharging cycle last longer, but it is not gone. I know the problem from S2, but nothing helps on my S3. The problem just exists with Navigon.
What I tried:
- different charger
- set CPU freq to max 500 MHz when navigating
- Display brightness to min when navigating
- Set AC in Extweaks from 1000 to 1200 for testing purposes
Any suggestions from experts?
Click to expand...
Click to collapse
I actually have the same issue on both my GS3 and Galaxy Nexus. The problem here is that the car charger is not able to provide charge to the phone at the rate at which it discharges. So it will keep discharging unless you get a charger which can charge at a faster rate (higher the Amp, the faster it will charge).
shorty1483 said:
Always when I'm using my S3 with Navigon, it discharges when connected with car charger.
I am using an original car charger by Samsung. Rom is in signature. Temp when navigating is around 48°C.
All of these things just let the discharging cycle last longer, but it is not gone. I know the problem from S2, but nothing helps on my S3. The problem just exists with Navigon.
What I tried:
- different charger
- set CPU freq to max 500 MHz when navigating
- Display brightness to min when navigating
- Set AC in Extweaks from 1000 to 1200 for testing purposes
Any suggestions from experts?
Click to expand...
Click to collapse
I am having the same problem and I just talked to a buddy of mine (who is an electrician) and he told me that the charger needs to be the exact same volts(not amps) as what the phone/battery needs. If the charger puts out more or even less it could harm the battery and even the phone itself. If I got this right my old charger was working at 500mah I think the s3 is supposed to charge at 1A.(if I'm understanding all this right) I was trying to use my old charger with my new s3 because they both use micro usb and I thought it would work. Well, it does charge the phone but doesn't charge at the rate required thus my phone is discharging faster than it is charging. I hope this helps and sorry if I forgot anything. Btw he has been an electrician for well over 20years. (I want to add I tried to repeat everything like he told me because I personally don't know much on this subject) helpfully someone else can explain it better. Good luck
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geargamer said:
I am having the same problem and I just talked to a buddy of mine (who is an electrician) and he told me that the charger needs to be the exact same volts(not amps) as what the phone/battery needs. If the charger puts out more or even less it could harm the battery and even the phone itself. I was trying to use my old charger with my new s3 because they both use micro usb and I thought it would work. Well, it does charge the phone but doesn't charge at the rate required thus my phone is discharging faster than it is charging. I hope this helps and sorry if I forgot anything. Btw he has been an electrician for well over 20years. (I want to add I tried to repeat everything like he told me because I personally don't know much on this subject) good luck
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Click to expand...
Click to collapse
I would have to agree with circuit89, you need a charger with higher Amps. All usb chargers provide 5 volts. as that is the sub standard, but a standard usb port on the computer is only 500mA, i think the standard charger that comes with the s3 provides 1A, and I think that is the minimum that you need to be able to charge while using gps etc.
A charger with a higher current will no damage the device, it just means it can provide up to that current, so it will provide up to as much as the phone can accept, or it's maximum output.
in short you need a car charger which provides a higher current to charge it faster so it will charge faster than the phone is discharging.
also read here for more info http://www.extremetech.com/computing/115251-how-usb-charging-works-or-how-to-avoid-blowing-up-your-smartphone
if you can pre-cache maps with that app then that would probably help, that is seriously high battery drain, might even be linked to Google maps running in the background, if you are rooted try and freeze maps with titanium before your next journey and see if it helps
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electric0ant said:
I would have to agree with circuit89, you need a charger with higher Amps. All usb chargers provide 5 volts. as that is the sub standard, but a standard usb port on the computer is only 500mA, i think the standard charger that comes with the s3 provides 1A, and I think that is the minimum that you need to be able to charge while using gps etc.
A charger with a higher current will no damage the device, it just means it can provide up to that current, so it will provide up to as much as the phone can accept, or it's maximum output.
in short you need a car charger which provides a higher current to charge it faster so it will charge faster than the phone is discharging.
also read here for more info http://www.extremetech.com/computin...ks-or-how-to-avoid-blowing-up-your-smartphone
Click to expand...
Click to collapse
I liked the article. I think it explained it well. The info I got from my buddy was very technical and was probably way more info than I needed but this does bring up another question. What is the highest mah I can use with my s3. I read somewhere on here that it will only change as fast as the phone will allow.
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geargamer said:
I liked the article. I think it explained it well. The info I got from my buddy was very technical and was probably way more info than I needed but this does bring up another question. What is the highest mah I can use with my s3. I read somewhere on here that it will only change as fast as the phone will allow.
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
I'm not sure that it is rated at but I've used my ipad charger to charge my S3 (2.1A) and it does charge it pretty fast.
electric0ant said:
I'm not sure that it is rated at but I've used my ipad charger to charge my S3 (2.1A) and it does charge it pretty fast.
Click to expand...
Click to collapse
So if I understand this right your phone should be charging twice as fast( if it using the hole 2.1A) compared to the 1A charger that came with the phone right? Have you checked to see how long it takes to fully charge? I was thinking about buying a 2.1A charger.
Sent from my SPH-L710 using xda app-developers app
Have you tried undervolting? May help a bit. Also increasing charge from usb port.also switch off screen when not needed
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I have UV with -100mV on all frequency steps. Perhaps I have to say that I'm using the ORIGINAL Samsung S3 car charger with an output of 1A. Also the hint with freezing apps does not work, already tried that one. Because everything I read did not help, I asked the question here :laugh:
When I want to believe BatteryMonitor, I am connected to AC charge with 1000mA, not USB. When looking on the consumption in BatteryMonitor when not connected and running Navigon, 1000mA should be highly enough.
Weird...
I have an old 0.7A charger and was told that a 1A charger would be faster..
But how far higher can I go? Is there a 2A charger?
Track607 said:
I have an old 0.7A charger and was told that a 1A charger would be faster..
But how far higher can I go? Is there a 2A charger?
Click to expand...
Click to collapse
1A is stock for S3.
Maximum recommended is 1.5A,more may brick your whole device,if not the battery.
solution
Track607 said:
I have an old 0.7A charger and was told that a 1A charger would be faster..
But how far higher can I go? Is there a 2A charger?
Click to expand...
Click to collapse
I guess using modified"boeffla or googymax " kernels will let your phone charge much faster
Maximum rating of the charger is irrelevant, the phone will only draw a safe amount. If you override that limit then you may blow the internal charging IC or rupture the battery.
Don't post questions in the general section.
The S3 can't charger faster than 1A, it will only draw what it can, I've used a HP Touchpad 2A charger since the day I got the phone, it still won't draw more than 1A. You can use custom kernals to draw more, but you'll find lots of stories of people who did it and fried the charging board.
I tested using 1.1Ah, and for the storioes I've read, it's the maximum value you can use with security.
Hi, you can have more than 1A, but you need to change the limit with boeffla (i made it for the USB charge)
theronkinator said:
The S3 can't charger faster than 1A, it will only draw what it can, I've used a HP Touchpad 2A charger since the day I got the phone, it still won't draw more than 1A. You can use custom kernals to draw more, but you'll find lots of stories of people who did it and fried the charging board.
Click to expand...
Click to collapse
user3k said:
I tested using 1.1Ah, and for the storioes I've read, it's the maximum value you can use with security.
Click to expand...
Click to collapse
Using 1.2A from months in boeffla kernel without any trouble, using stock charger.
I tried 2A once and it was fast (0-100 in 1hr) but its not recommended 1.5 max
Also I increased charging speed to 1600mah that time and it was working
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Dramatically increasing charging current will also dramatically decrease battery service life
Just get a second battery and desktop cradle, instant recharging without any wear on the phone motherboard.
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Hi, i am getting a new charger for my tablet pc which uses a 5.35V 2A output charger and was wondering whether i can use this to charge my galaxy S3. so that i do not have to carry 2 chargers?
IS it advisable?
My S3 came with a 1A charger, my wife's S3 came with a 2A charger. I used her charger a few times and it worked fine. As of last week my charger is working fine, if I use hers with my phone I only shows "USB" in the battery info and takes forever to charge. I don't know if her charger did damage to my phone/battery but that felt strange, so I stopped using her charger.