[Q] Can I use a Galaxy S2 charger for Galaxy S3? - Galaxy S III Q&A, Help & Troubleshooting

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
Sent from my GT-I9300 using Tapatalk 2

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.
Sent from my GT-I9300 using xda premium

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...
Sent from my GT-I9300T using xda premium

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..
Sent from my GT-I9300 using xda premium

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.
Sent from my GT-I9300 using xda premium

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.
Sent from my GT-I9300 using xda premium

Charge time zero to 97% 3 plus hours .
jje

Related

Phone dying even while charging?

Lately I began doing some gaming on my GS2 and this has happended to me twice now. one time while playing tiny tower and once on dungeon hunter. I will play with the phone plugged into my pc charging and the battery eventually drains. Is it possible that the games are actually using more juice than it's recharging? I'm currently running latest Unamed Rom.
More that the pc can't charge it quick enough. Wall chargers put out roughly twice the power of a pc usb port.
Sent from my SAMSUNG-SGH-I777 using XDA App
Don't expect much from USB charging via PC.
Sent from my SAMSUNG-SGH-I777 using XDA App
gr8hairy1 said:
More that the pc can't charge it quick enough. Wall chargers put out roughly twice the power of a pc usb port.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Its more like 50% more, since the charging for usb is ~440mA, and wall socket is 650mA. Also even at 650mA, at overclocked loads, the battery will still drain...
Damn. Thanks guys! I just ordered a few more batteries and wall charger.
I remember when I had my Captivate playing and recharging at the same time would make the back scorching hot. I bet this phone could do the same so I stray away from doing anything while charging it.
i noticed the same thing while charging via usb and using the phone at the same time. the phone will show that its charging and yet the battery is still dying. I chalked that up to the USB charger not having enough juice to charge it while in use.
as soon as I stop using it, the battery charges fine
penguinlogik said:
Its more like 50% more, since the charging for usb is ~440mA, and wall socket is 650mA. Also even at 650mA, at overclocked loads, the battery will still drain...
Click to expand...
Click to collapse
Id say its dependant on kernel/rom as well. Im running unnamed and entropy's latest DD kernel (i believe its the kernel that dictates chg rates tho). I get a charge rate of about 1100 mah on pc USB and about 1800 on a wall charger.
Sent from my SAMSUNG-SGH-I777 using XDA App
Not possible. It's been proven that the charging is limited by the hardware. Anyways USB has a max current of 500mA and the wall charger has a max current of 700mA...
penguinlogik said:
Not possible. It's been proven that the charging is limited by the hardware. Anyways USB has a max current of 500mA and the wall charger has a max current of 700mA...
Click to expand...
Click to collapse
Hmm interesting.. i hadnt gone as far as using an ammeter, just going by my log in battery monitor widget. Lol which is clearly WAY off :-0
Sent from my SAMSUNG-SGH-I777 using XDA App
jojorios said:
Damn. Thanks guys! I just ordered a few more batteries and wall charger.
Click to expand...
Click to collapse
Hi Jo,
Your AT&T unit should have already been bundled with an AC charger no? In your *excitement* over the new phone you may have neglected the WALL charger and it may very well still be in the original Oragne/White AT&T box...
lonewolf69 said:
Hi Jo,
Your AT&T unit should have already been bundled with an AC charger no? In your *excitement* over the new phone you may have neglected the WALL charger and it may very well still be in the original Oragne/White AT&T box...
Click to expand...
Click to collapse
Too bad they don't include more than one so I could have one for work.
jojorios said:
Too bad they don't include more than one so I could have one for work.
Click to expand...
Click to collapse
I use this...USB Wall Plug....For $1.90 and free shipping, it works Great!!!! 1000mA output too.
Then all you need is a cable...Charging and Data Cable....for $1.80 with free shipping too.
FYI: Don't be shocked if the shipping takes a couple weeks. I don't complain though for those prices.

Galaxy S3 Charging Very Slow

In about two hours of charging I went from 8% to 41%. Is anyone else experienceing this issue? I'm using all the cords and plugs given to me for the wall.
I don't have the SGS3 (yet), but my guess is that the battery is so large it takes longer to charge. Keep in mind that it's a 2100MaH battery. Depending on the power that the charger puts out, it could take longer to charge this battery than another phone.
Mine charges fairly quick with stock items.
Sent from my SAMSUNG-SGH-I747 using xda premium
Mine went from 2% to Full 100% in a little over 2 hours on the stock Samsung charger.. I'm going to cycle mine 3 or 4 times being that it's new obviously.
Sent from my SAMSUNG-SGH-I747 using xda premium
So would you agree something is wrong with my phone?
I agree, the first few cycles might not be too accurate. If you want a faster charger get the HP Touchpad charger, it has 2 amps where as the Samsung one is .75 amps of charging. only $5 on hp website. that's what I use.
divinewisdom said:
I agree, the first few cycles might not be too accurate. If you want a faster charger get the HP Touchpad charger, it has 2 amps where as the Samsung one is .75 amps of charging. only $5 on hp website. that's what I use.
Click to expand...
Click to collapse
Monoprice sells a 2.1 amp 4 usb wall charger as well but it is not as cheap nor do they have free shipping *although atleast in CA I can get a flat rate of 25lbs and under for ~$5 shipping.*
I'm surprised no one has posted the correct answer to this yet. The wall charger Samsung has decided to include with the S3 NA is complete and utter crap. I believe it is .15amp draw. You need to immediately throw it in the trash and buy a new one. It is not a problem with your phone.
Randomacts said:
Monoprice sells a 2.1 amp 4 usb wall charger as well but it is not as cheap nor do they have free shipping *although atleast in CA I can get a flat rate of 25lbs and under for ~$5 shipping.*
Click to expand...
Click to collapse
Thanks, i just ordered one up with a couple 10ft cables!
One of my HTC blocks and/or extension cables seems to have bit the dust recently.
trichert said:
I'm surprised no one has posted the correct answer to this yet. The wall charger Samsung has decided to include with the S3 NA is complete and utter crap. I believe it is .15amp draw. You need to immediately throw it in the trash and buy a new one. It is not a problem with your phone.
Click to expand...
Click to collapse
I use the stock 1amp charger that came with my Galaxy Nexus...
Sent from my SAMSUNG-SGH-I747 using xda premium
I just read somewhere else that it is the USB cable causing the problems. So I will try that and let you guys know.
Randomacts said:
Monoprice sells a 2.1 amp 4 usb wall charger as well but it is not as cheap nor do they have free shipping *although atleast in CA I can get a flat rate of 25lbs and under for ~$5 shipping.*
Click to expand...
Click to collapse
while I like Monoprice, the HP OEM charger is better in my opinion. its solid built and portable too.
I use the Blackberry Premium charger works well with my S3 and is only like $15 or so on Amazon.
Before I rooted and calibrated the battery. My phone took 3hrs 20min to fully charge on stock 1A charger.
sent from my Galaxy S3
My charges pretty quick too. Even in my
Car.
sent from my GALAXY SIII
divinewisdom said:
I agree, the first few cycles might not be too accurate. If you want a faster charger get the HP Touchpad charger, it has 2 amps where as the Samsung one is .75 amps of charging. only $5 on hp website. that's what I use.
Click to expand...
Click to collapse
My Samsung Charger that came with the phone is 1Amp...charges the device fine. I don't think the 2Amps will make a difference if the charging chip doesn't support it (not saying it doesn't but the SGSII would only charge at 650maH no matter what charger you put it on)
Mine's charging insanely fast with the stock cable. Not sure if it's a good thing because battery life isn't all that amazing on my phone so far.
02busa said:
Mine went from 2% to Full 100% in a little over 2 hours on the stock Samsung charger.. I'm going to cycle mine 3 or 4 times being that it's new obviously.
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
just FYI, this is old habit....the batteries used today don't need to be cycle drained
http://forum.xda-developers.com/showthread.php?p=3846897#post3846897
zaisaroni said:
Thanks, i just ordered one up with a couple 10ft cables!
One of my HTC blocks and/or extension cables seems to have bit the dust recently.
Click to expand...
Click to collapse
No problem, I bought a 100foot cat 6 ethernet from them for $12. They are really cheap while always having top notch quality on cords and some other stuff.
Randomacts said:
Monoprice sells a 2.1 amp 4 usb wall charger[/URL] as well but it is not as cheap nor do they have free shipping *although atleast in CA I can get a flat rate of 25lbs and under for ~$5 shipping.*
Click to expand...
Click to collapse
doesn't that mean each USB port is 0.5 amps?
Anyways if I'm not wrong the amps has to do with what it can supply. Whether the device tries to draw that much power is up to the device.
The stock charger is 5V 1amp.
Even if you use a 2 amp charger it will likely only draw one amp.
Even if it does draw 2 amps that would mean you are increasing the heat associated with more current. Heat is the worst thing for battery life. Its always better to do slow charge unless you're in a hurry. Your battery will last a lot longer that way. Having said that, I think 1 amp is a good compromise for speed and heat.
p.s. computers output 0.5amps per USB slot by default specifications.
Sent from my SGH-T999V using xda app-developers app

[Q] GS3 Charger

So I will get the regular charger for gs3 that comes with the phone (tomorrow when i get the phone). but i also have the HP Touchpad charger which gives output of 2.0A. I was wondering if I charge my phone with the HP charger will it actually charge is faster then the regular gs3 charger? the reason i ask is cause in other threads ppl have mentioned that it only charges faster with non - stock roms like aokp or aosp roms. please lemme know if this will work. thanks
It should I got one of those and it does charge faster I got the bb one tho
Sent from my SGH-T999 using Tapatalk 2
I've used my BlackBerry PlayBook charger on mine and it doesn't charge any faster. That charger is 1.8amp.
It will not charge faster. The phone only draws as much amps as its allowed to. Whether you use a 1 amp charger or a 2 amp charger, it'll only charge at the phones own rate
Sent from my SPH-L710 using xda app-developers app
then theres basically no advantage to using some other charger?
I don't believe so. The phone only draws what it needs.
Sent from my SPH-L710 using xda app-developers app
A lot of chargers will be rated less than the stock charger. Especially cheap car chargers. In that case the phone can only draw at the charger rating.
alirulzz said:
then theres basically no advantage to using some other charger?
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Click to collapse
Unless you run a custom kernel that allows for higher charge rates.
Sent from my ADR6400L using Tapatalk 2
I have a dual car/wall charger and I noticed when plugged in the car it charges faster.
Sent from my vivow using Tapatalk 2
The values listed on the charger is the max output it can provide. If the setting on the phone or the hardware is set up to only pull 1A, then it will always pull that unless that is more than what the charger can provide.
That being said, you should be able to take the battery out and charge it faster separate from the phone. I've always read, though, that charging a battery faster ( i.e. turning up the current) will/may reduce the life of the battery
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
the only way I have found to charge phone's faster is to power it off and then charge...takes about half the time to fully charge
none of the 2 amp chargers make it any quicker
alirulzz said:
So I will get the regular charger for gs3 that comes with the phone (tomorrow when i get the phone). but i also have the HP Touchpad charger which gives output of 2.0A. I was wondering if I charge my phone with the HP charger will it actually charge is faster then the regular gs3 charger? the reason i ask is cause in other threads ppl have mentioned that it only charges faster with non - stock roms like aokp or aosp roms. please lemme know if this will work. thanks
Click to expand...
Click to collapse
I have a Touchpad charger and it can be used, though I noticed that the phone got hotter than normal, IMO. The phone comes with a 1.0A combo wall charger with USB cable. Interestingly the Samsung stand and battery charger that comes with the spare battery comes with a .7A charger but the charging unit itself is 500mA/1A on the input with output at only 4.2v @ 450/900mA.

(Q) Anyone tried wall charger from Galaxy Tab?

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
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!

Battery Charge Speed

Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
U using stock Samsung charger and cable?
Sent from my SCH-I545 using Tapatalk
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
I've found the stock charger that came with my phone doesn't charge very fast anymore. It will sit around 1.2a but with a new charger with a rating output of 2a I've been getting a charging rate of about 1.9
Sent from my SCH-I545 using XDA Free mobile app
Not gonna lie I have been using the iPad charger with a stock cable and that will get it done quick. Try to back up an oem iPad block off amazon or what not and you will notice a difference.
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
zombolt said:
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
Click to expand...
Click to collapse
This is what I use: https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my SCH-I545 using XDA Free mobile app
If you use KT kernel, it shows you in KTweaker the charging current.
Sent from my SCH-I545 using Tapatalk
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
I'm running ktoons kernel without fast charge, and I'm getting 1.9
Sent from my SCH-I545 using XDA Free mobile app
I'm on safe strap so running a custom Kernal isn't possible. I'm guessing I'm seeing the 1.9a when it's initially waking up from the screen off. I've tried the stock cable, as well as the Amazon one that is 1.9a.
Sent from my SCH-I545 using XDA Premium HD app
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
The Fast Charge mode on the KT kernel has no impact on AC charge rate, it only affects USB charge rate:
Normally, when you connect to a PC, you get about a 500ma charge rate and the ability to pass data along. When 'Fast Charge' is set, you lose the ability to transfer data, but the 500ma restriction goes away. In practical terms, it means that you should see between 700ma and 900ma as a result.
w/respect to the OP, my experience is weird. When the device was new, I got around 1800ma on stock charger and cable; now, same setup gets me 900-1200 if lucky (even with new battery). When I tried the stock charger with a different (newer) cable, I get around 1600. It's strange that a cable's ability to carry a charge would degrade so quickly (if that's in fact what's happening).
I have no proof, but absolutely believe that kernel can influence max charge rate, because in the past, I've observed max charge rate drop with the release of a new kernel version, then go up again with another release.
Samsung did slow the charging rate in one of the OTAs. People had been complaining about the phones getting too hot.
Sent from my SCH-I545 using Tapatalk
its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
methodsofbeyond said:
its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
Click to expand...
Click to collapse
What are you using to measure that? Qi isn't capable of charging at 1.9a
The galaxy charging current app..
So you've noticed that sometimes your phone seems to take forever to charge, and other times it seems to charge fine? Let me share some ideas that I've learned through lots of research on this exact subject last year...
I have used the galaxy charging app myself. In my opinion, CurrentWidget is better...looks cooler too. Ha.
So other than software related issues, you need to remember that the speed in which your phone charges is highly dependent on the hardware of 3 things:
1) Power Outlet (including power strips, extension cords, USB extenders, etc.)
2) Power Adapter (I highly recommend Anker's products!!!)
3) MicroUSB Charger Cable (if not using the factory Samsung cable or an Anker one, be sure that it's an 11-pin microUSB, and NOT a 5-pin...they look the same!)
Power Outlets - I know for me, if I use the outlet in my livingroom, it takes SO much longer for my phone to charge than it does in my bedroom. Just try this test! Grab that CurrentWidget app from above and try out some different outlets throughout your house, just to see whether or not the voltage varies. I bet you'll see that this is true!
Power Adapter - You should be using either the factory Samsung charger or a reputable 3rd party charger with the equivalent specifications (5V & 2.1A). However, I actually prefer my Anker charger over my Samsung one! If you're finding that you can't get a good charge, try swapping out your adapter with another one.
MicroUSB Charger Cable - As stated with the power adapter, you should also try to stick with your factory cable if possible. HOWEVER, I have found that to daily connecting and disconnecting of the cable with your phone, they probably receive the most wear and tear of anything else, and therefore may need replacement after some time. Again here, I find that using either my Anker cable or Samsung cable will give me the best charge. This is determined by both the CurrentWidget app and the amount of time it actually takes to get a full charge! Keep in mind that using USB extender cables can drastically lower the voltage to your phone - thus causing a very slow charge.
So basically, I know if I need to charge my phone as quickly as possible, I know I should clear my RAM and recent apps, put my phone on airplain mode, and using my Anker charger, I plug-in at the outlet near my closet door! I figured this all out by using these same ideas I just shared with you! Hope this is helpful!
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
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brizey said:
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
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I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
calebcabob said:
I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
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The Samsung power supply is rated for 100 to 240 V @ 0.5 A input. It may be that the power supply is kind of crappy, and varies its output under small variations in input voltage, which is why you see what you see. It really shouldn't...but it wouldn't shock me if it did given that its made for $2 in China. Makes you wonder what would happen if you plugged it into a 240V source. When my wife went to Malaysia last summer to visit her folks, I just put a US to British transformer-less adapter on her Motorola brick and it worked OK plugged into 240V. Maybe the Samsung ones are crappier?
I squared R losses should be reasonably low in household wiring. NEC is 5% drop max at the outlet. And that is like the outlet the farthest from your mains under full rated load. Assuming you live somewhere typical, your voltage at the panel will be 120V+; a lot of time its a few volts over 120. If you have an outlet that is not tripping a breaker go below 100V, you have a problem somewhere. A 20% drop is not normal. Have you put a meter on the outlets with low charge rates?
My friend's OEM s4 charger charges at 1900 ma while my OEM charger only charges at max 1200... Weird how that happens but somehow the cable just stops charging as fast.
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