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
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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.
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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
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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.
Sent from my GT-I9100 using xda premium
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.
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Thanks but I prefer stock roms
Related
i'm reading different opinions about this when i searched through the xda forums and on google.
i'm using the same custom rom and kernel for about a week now. a few days ago, i charged purely on wall socket. left overnight, my battery lost only 2%.
last night, i charged my phone when it was about 30%. i charged using usb up to 85%, then i finished it off on AC up to a 100%. my overnight loss went up to 5% (i did not install any additional apk, or change my setcpu profiles, etc).
there are no topics on this, specifically for SGS2. mostly are from HTC threads.
from what i learned, usb's only pour out about half of what AC's can give (500 mah vs 1,000 mah). does that translate into a poorer batt life?
How you charge your phone, usb vs AC will not effect the battery life, 100% is 100%, it will just charge slower via usb.
Sent from my GT-I9100 using xda premium
I have noticed something similar with my captivate.I would guess that when you use the wall charger with 1amp the battery gets more of a charge than when you use a usb charger at .5amps. 1amp can cause more chemical change in the battery than half an amp.
sent from my Infuse at Tranquility Base.
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
I see no difference and 2% to 5% is within a tolerable variation of overnight drain .
Its all the same electricity .
jje
Sticks02 said:
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
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Firmware, actually, and the phone determines how much it will draw based on the resistance between the two USB data pins. If the resistance is < 200 ohms, it assumes it's plugged into an AC charger, and will draw up to 650 mA. Otherwise, it assumes it's plugged into a PC's USB 2.0 port, and will draw up to 450 mA, just under the 500 mA that a USB 2.0 port is supposed to provide, per the USB 2.0 spec.
Since it's firmware, it should be possible to change the current draw by re-compiling the kernel sources with new values. Note that you don't want to go too high on the charging current, as that could cause overheating or fire.
Sticks02 said:
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
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Click to collapse
And how about charging a spare battery using a separate battery charger?
I have two batteries and I never charge them plugging the phone, just using a spare battery charger. Does it have any negative effect on the batteries' lifespan?
dont know what happened but my phone is being charged with ac adapter as same speed as usb.(more than 4 hours) :S
I have a USB charger capable of delivering 1A.
Even with the data pins shorted (phone side), it still seems to draw only 350 mA :-(
Any ideas?
Known made-up cables that do work?
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.
Sent from my SPH-L710 using xda premium
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
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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.
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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.
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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.
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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!
Just curious if there is an app or something similar that would show how many amps are being provided when charging through a wall charger/USB powered hub? The reason I ask is that I'm thinking of buying a powered USB 3.0 Hub. The adapter that came with our phone says it's 2 Amp, so I am assuming our phone can pull 2 amps for charging. Just wanted to verify in some way that a 2 Amp dedicated port would really work for this phone.
*Madmoose* said:
Just curious if there is an app or something similar that would show how many amps are being provided when charging through a wall charger/USB powered hub? The reason I ask is that I'm thinking of buying a powered USB 3.0 Hub. The adapter that came with our phone says it's 2 Amp, so I am assuming our phone can pull 2 amps for charging. Just wanted to verify in some way that a 2 Amp dedicated port would really work for this phone.
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When I get home, I'll download the kernel source and see if I can find out how much power it draws during charging. I doubt however, that it will draw 2A during charging as most chargers are rated to supply more power than the phone will accept.
Yeah, 2A seems like that could melt a battery charging that fast. Someone sent me a private message and told me to try CurrentWidget. I threw that on the phone and it registers as 1A while charging. But it appears like the widget doesn't break it down with decimals. For instance it could be charging with 1.8A and wouldn't know it. I put it in a standard USB port and it reported as charging with 0 Amps but the battery was indeed charging.
I took a quick look at the N7100 (International Note 2) source posted on Github by CM and it looks like AC charger is 650mA, USB is 450mA. It's a little hard to tell what exactly it's using for charging, so I'll try to verify that when I get home and have a chance to take a better look.
*Madmoose* said:
Yeah, 2A seems like that could melt a battery charging that fast. Someone sent me a private message and told me to try CurrentWidget. I threw that on the phone and it registers as 1A while charging. But it appears like the widget doesn't break it down with decimals. For instance it could be charging with 1.8A and wouldn't know it. I put it in a standard USB port and it reported as charging with 0 Amps but the battery was indeed charging.
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A 3100mAh Lithium Ion battery can easily handle a full 2A charge rate. The ideal charge profile for Lithium Ion is a CC/CV profile, starts at constant current between like 3V and 4V, which most LI batters can take a rate of 1C, meaning it can handle a charge rate of 3.1A, recommended charge rate to achieve the most possible charge/discharge cycles is usually 0.2C so for a 3100mAh battery that would be 620mA. Once the charge gets to the correct voltage it gets to constant voltage and charges until termination current usually in the 100mA range. So yes, it can handle a 2A charge no problem.
Hey there. I very much appreciate that breakdown. Makes me wonder why they dropped the amps so much during charge.
bose301s said:
recommended charge rate to achieve the most possible charge/discharge cycles is usually 0.2C so for a 3100mAh battery that would be 620mA.
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If this is true (first time I've seen this anywhere), that would line up great with the 650mA max charge rate I found. Also, I downloaded the VZW source, and it doesn't look to significantly different from the N7100 source, at least as far as the charger stuff is concerned, so I would say they both probably have a max charge rate of 650mA.
I appreciate the info and time you both put into this. I guess it means a 2A usb port will be slight overkill. Even changing the charge rate to a higher value seems to indicate a lower battery life. Makes you wonder how apple did it's math for the ipads charge rate. The battery must be huge to accommodate a 1.1A charge rate. Or they are sacrificing battery life for fast charging.
Wont the kernel dictate the charge rate no matter what the charger is rated at?
If the kernel is set for a charge rate of 650mA (0.650A), then why does the Note 2 have a more powerful 2A wall charger, while the GS3 has a 1A wall charger.
FAUguy said:
If the kernel is set for a charge rate of 650mA (0.650A), then why does the Note 2 have a more powerful 2A wall charger, while the GS3 has a 1A wall charger.
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Click to collapse
The original nook color 7" came with a 2A wall charger and that was 2 years ago... both my note 2 and nook color charge about the same rate (quick to 99% and slow to 100). The charger is probably cheaper to make at 2A rather than anything and plus it could be used to charge future devices. Also if you used a 1A charger to charge the note it might possibly get warm/hot from running at near full capacity.
Im using my OLD blackberry 700mA wall charger to charge the phone at night while im sleeping. No problems with heat.
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?
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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?
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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.
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user3k said:
I tested using 1.1Ah, and for the storioes I've read, it's the maximum value you can use with security.
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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
Sent from my GT-I9300 using Tapatalk
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.
Sent from my GT-I9300 using Tapatalk
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.
I know there is a thread about what charger to buy, but I have a specs question. Mine z5 came with the International charger and I am in the US. I noted it is 5v and 1.5a. I have a 5v 1a charger on hand. Can I use that?
Sure, it will just take longer to charge.
No lasting negative effects on the battery?
BigHulkDiesel said:
No lasting negative effects on the battery?
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Most certainly no negative effects. In theory it should actually be better for the battery to charge it with less current, but I don't know if that is true.
Different topic: I read that there are multiple versions of the Z5 (US, Europe, ...) and that they support different LTE frequencies. So maybe you want to check if your mobile connection works as intended, if you don't have the US version.
My phone is showing LTE after choosing my apn settings.
I tried using a 5V 1A charger with my phone and it doesnt seem to work. (It works fine on my old phone) The charge light keeps turning on and off. The vibration pulse you hear when it starts charging keeps pulsing too.
Better use an HIGHER amperage, than lower!! Charger will adapte it to phone specifics...A lower amperage will reduce your battery capacity in long time.
I once connected my Z5C to an old 500mA charger (caught the wrong cable) and kept using it a bit (screen on, etc.) and it gave me a nag screen that said that the charger is not suitable because apparently the battery drain from usage was more than what trickled back in.
However, if left alone even a 500mA charger should eventually charge the phone, taking much longer though.
Generally, with chargers, you need to get the voltage right. If the Amperage is higher that what the OEM charger is it does not matter. The electronics in the device limit the charge to what the device can handle. The Amperage on the charger is the max it can deliver. In other words, the charger does not pump 2.5A into the phone forcefully, the phone just nibbles whatever it can take (say 1,5A).
farfetch said:
Better use an HIGHER amperage, than lower!! Charger will adapte it to phone specifics...A lower amperage will reduce your battery capacity in long time.
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Any reliable source for that? The charging will be slower - yes, but I seriously doubt, that this has negative long-term effects on the capacity.
dd23 said:
Any reliable source for that? The charging will be slower - yes, but I seriously doubt, that this has negative long-term effects on the capacity.
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Just try it by yourself for few days
Sent from my E5823 using Tapatalk
I think you need a 2A charger to be sure with the Z5c. Most of my older chargers take hours to charge it, and the car USB port (Nissan Qashqai 2015) barely charges it at all.
The UCH20 that came with the phone, takes 2 hours 15 mins to charge the phone fully. I got a quick charger which takes around 1 hour and 10 mins at max
Wow, really?
It is basic electronics. The voltage must be the exact one. Amperage is what the device draws , therefore the charger must be capable to provide a minimum not a maximum.
I repeat, it is basic electronics!
Now a more pertinent question :
What are the voltages for quick charge ? Does anyone know?
If someone has a original charger with quick charge can you please state what voltages are written on it?
Should be 2 or 3 voltages with lowest 5V
Edit : Found myself the info on Sony UK website of a Sony charger.
[email protected],
[email protected],
[email protected]
farfetch said:
Better use an HIGHER amperage, than lower!! Charger will adapte it to phone specifics...A lower amperage will reduce your battery capacity in long time.
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Click to collapse
I also want a source for that... It's the first time in my life i hear it's the opposite... and i have been charging this phone with 1 amp or 500mA (with pc usb) for the past 4 years, battery is still fine. Only used a 1.5A charger a few times.
On the other hand, my sisters z5 had a swollen battery a year ago, she always used quick chargers...
farfetch said:
Just try it by yourself for few days
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Click to collapse
What do you mean by that?
you are not going to notice battery degradation in just a few days of charging...
EDIT: i only notice now that i accidentally replied to a post from years ago, sorry for that...