http://www.ebay.com/itm/3-1A-Dual-U...S_Cell_Phone_PDA_Chargers&hash=item565a917530
hello
My stock charger is us for galaxy s4 (samsung regular charger)
and then I found this (link above) with 2.1A
is it matter charging via 2.1A and not 2A? what is the different? it will charge faster/slower?
thanks
In Stock kernel there is current limit 1.9A. So everything above it, will be the same as 1.9A.
In reality, you will find that even 2.1A charger doesn't supply even 1.9A. Chinese charges definitely don't supply current thay claim. And beware of them - you may fry your device by such cheap charger.
Also, it heavily depends on USB cable as well. It has to be very short and very thick.
I have a Mediabridge car adapter that has a 2.1 amp charger on it. When I charge my S4 with it it barely charges faster than the 1 amp charger does. I think it charges at either 1.3 or 1.7 amps, sorry can't remember exactly.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
jev3gs said:
I have a Mediabridge car adapter that has a 2.1 amp charger on it. When I charge my S4 with it it barely charges faster than the 1 amp charger does. I think it charges at either 1.3 or 1.7 amps, sorry can't remember exactly.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
How do you measure the exact amperage that it charges at?
Badelhas said:
How do you measure the exact amperage that it charges at?
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Click to collapse
I don't have the equipment to measure it exactly. So what I did was charge my phone from 50% for 40 minutes on my stock Samsung wall charger and then recorder the percentage it increased. I then took that number and assumed it was charging at 2 amps and used it as a baseline. Then I did the same test with my car adapter and recorded the results. The I figured out the percentage difference and came up with me estimates. I just don't have the data in front of me anymore but I remembered it being somewhere between 1.3 or 1.7.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
The stock charger is fast at charging this phone. On my s3 it took forever . I would stick with stock
Sent from my SPH-L720 using XDA Premium 4 mobile app
ok thanks
more people?
ok thanks
more people?
Chargers, power supplies, etc, don't "decide" the amps that go to a device - the device "draws" a certain amount. Just because a lamp is plugged into a 20amp circuit in your home doesn't mean 20 amps are going to be shoved through the bulb.
So if, as sorg says, the phone is only going to "ask" for 1.9a, you could plug it into a 5 amp charger and it would make no difference.
darixtorento said:
ok thanks
more people?
Click to expand...
Click to collapse
You already got your answer above.
No, your phone will NEVER charge faster than 1900 until a developer comes along and figures out how to hack the system to allow this. And it would be a potentiallly STUPID idea to charge faster than Samsung has deemed safe.
Go here to find out how to test your charging rate:
http://forum.xda-developers.com/showthread.php?p=46156385#post46156385
Related
This question has been asked before but no one can answer it odd.
Nexus 7 charger is two amps. Stock s3 charger is one amp.
Can I charge my s3 without damaging it using the other charger. People say it charges faster. Some people say it doesn't matter because the kernel will limit it.
Whats the real deal?
Sent from my SCH-I535 using Tapatalk 2
I am pretty sure it will use only what it needs. Atleast thats what i been taught at radioshack
Sent from my SCH-I535 using xda premium
There are a lot of variables as to what the maximum charge current will be. I've never seen it go over .8 amp. So if you use a 1 amp, or a 20 amp charger, it will be .8 amp. MAX. Usually less.
Use whatever you have handy that is 5 volts.
I actually use an old 5 volt .6 amp charger for overnight charging. A bit slow, but I don't care.
I have a home grown charger on my motorcycle that can go well over 1 amp, but the phone only has ever gone to about .8 amp. For a long time I had that charger set to 5.5 volts, and the current was up a bit closer to 1 amp. But the heat worried me and I bumped it back down to 5 volts.
Have been charging my s3 on the new iPad charger, and 2amp chargers bought from amazon without any issues.
Sent from a SYNERGIZED GalaxySIII
I'm using a RCA dual usb charger one usb plug is 1 amp and the other is 2.1amp both charge fine but I don't notice the 2.1amp charging any faster. I so kinda point less to use in my eyes
Sent from my SCH-I535 using Tapatalk 2
epagib said:
Have been charging my s3 on the new iPad charger, and 2amp chargers bought from amazon without any issues.
Sent from a SYNERGIZED GalaxySIII
Click to expand...
Click to collapse
You realize you're using a 10v charger on a 5v device right? That can toast your battery over time, a short time too depending on if you leave it plugged into it over night, etc..
I purchased the Mediabridge high output USB car charger from Amazon and shorted the 2 middle pins for AC charging. Prior to the mod it was charging at like 405mA, after the mod I'm at about 907mA. Does that sound about right? For some reason I thought it would be a little higher. Those of you that have done this mod, are you getting higher than 907mA?
Bronk93 said:
I purchased the Mediabridge high output USB car charger from Amazon and shorted the 2 middle pins for AC charging. Prior to the mod it was charging at like 405mA, after the mod I'm at about 907mA. Does that sound about right? For some reason I thought it would be a little higher. Those of you that have done this mod, are you getting higher than 907mA?
Click to expand...
Click to collapse
According to the original hardware mod they were getting around 800 mA so you have 907 is actually better not to mention in all depends of the charger etc
Sent from my SAMSUNG-SGH-I727 using xda premium
Cool thanks for the info. Tested it out his morning and in a 30 minute commute to class the battery went from 44% to 80% so it seems to be working quite well.
Sent from my SAMSUNG-SGH-I727 using xda premium
The max I've seen on any charger is around 905mAh, so yeah, that sounds about right. I think there must be a current limiter internally, as I've used a 2mAh charger and it still only charges at 905-ish.
I know this is a bad subject to bring into discussion but notice the S4 charger for the wall charger charges faster I bought a generic car charger for my last phone and it couldn't even keep up with the charge if I was using the GPS...... Any idea what a good car charger brand is or even Samsung makes for for the S4? I really would like a nice car charger that won't screw things up with my phone thanks all if you can just put your input if not thats ok too...
i bought this http://www.amazon.co.uk/MOFRED®-Mic...sr=1-1&keywords=samsung+galaxy+s4+car+charger should be good
The Motorola with the blue light, pn SPN5400A.
I am also looking for a car charger that quickly charges the battery like the stock wall charger. I went from 1% to 50% in around 45 minutes with the stock wall charger the other day.
Try to find a 2000mA (2A) car charger
i would just get something like this i were you guys. I have one and it works great http://www.ebay.com/itm/171038027580?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Xcor3 said:
i would just get something like this i were you guys. I have one and it works great http://www.ebay.com/itm/171038027580?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Click to expand...
Click to collapse
its 1 amp.
get at least a 2 amp charger @ OP
I agree 2Amp tends to be the way to go from what im learning but still looking for a great car charger lol
Is there a way within the UI to see how much charge the phone is getting? I have a generic USB car charger and I want to know if it's .5, 1, or 2 amps.
Generally I'm happy if I can use Google Maps navigation on a charger without losing any battery % but it would still be nice to know if I'm getting the fastest charge possible.
snakecharmer23 said:
Is there a way within the UI to see how much charge the phone is getting? I have a generic USB car charger and I want to know if it's .5, 1, or 2 amps.
Generally I'm happy if I can use Google Maps navigation on a charger without losing any battery % but it would still be nice to know if I'm getting the fastest charge possible.
Click to expand...
Click to collapse
Not that I know of but I am not too good when it comes to these kinds of questions lol sorry
snakecharmer23 said:
Is there a way within the UI to see how much charge the phone is getting? I have a generic USB car charger and I want to know if it's .5, 1, or 2 amps.
Generally I'm happy if I can use Google Maps navigation on a charger without losing any battery % but it would still be nice to know if I'm getting the fastest charge possible.
Click to expand...
Click to collapse
Generic car chargers, usually offers 700mah or 1000mah for the most.
It seems that getting 2000mah charger is the only good solution.
snakecharmer23 said:
Is there a way within the UI to see how much charge the phone is getting? I have a generic USB car charger and I want to know if it's .5, 1, or 2 amps.
Generally I'm happy if I can use Google Maps navigation on a charger without losing any battery % but it would still be nice to know if I'm getting the fastest charge possible.
Click to expand...
Click to collapse
Battery Monitor Widget from the market will. It shows discharge rate when off charge on charging rate when on charger.
Sent from my SPH-L720 using xda app-developers app
snakecharmer23 said:
Is there a way within the UI to see how much charge the phone is getting? I have a generic USB car charger and I want to know if it's .5, 1, or 2 amps.
Generally I'm happy if I can use Google Maps navigation on a charger without losing any battery % but it would still be nice to know if I'm getting the fastest charge possible.
Click to expand...
Click to collapse
Battery Monitor Widget can show you the charging rate. I have the Pro version.
Sent from my Nexus 7 using Tapatalk 2
swieder711 said:
Battery Monitor Widget can show you the charging rate. I have the Pro version.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Could you show a screen shot of where that app shows the charging rate?
I bought one from best buy it charges just as good or even faster than the stock charger. It's a Rocket fish 3 amp
Sent from my SPH-L720 using xda premium
Beastn said:
I bought one from best buy it charges just as good or even faster than the stock charger. It's a Rocket fish 3 amp
Sent from my SPH-L720 using xda premium
Click to expand...
Click to collapse
I have the same one. Works great.
Just keep in mind battery monitor widget does a best guess calculation on Samsung devices because Sammy refuses to put the code in that reports the actual current. Back on GB on my Captivate one of the roms had the code and it was nice but Samsung in its infinite wisdom deems it more important to include 500MB of bloat and omit this tiny important driver.
---------- Post added at 08:37 PM ---------- Previous post was at 08:16 PM ----------
Here are a few screen shots
http://pcsites.com/ebay/2013-05-11 20.19.41.png
http://pcsites.com/ebay//2013-05-11 20.19.49.png
http://pcsites.com/ebay//2013-05-11 20.28.15.png
I am considering 2 http://www.amazon.com/Release-Bolse...UTF8&colid=2YCT75R10D09V&coliid=IX3MOZIVWPAU4
or
http://www.amazon.com/Lightening-Ch...TF8&colid=2YCT75R10D09V&coliid=I1H99YUA2ZS8XI
Can someone recommend a car charger that I can buy in the UK that can charge the S4 reliably at 2A? I tried a few so-called 2A chargers, but they are only able to deliver 1.1A (as measured by the Galaxy Current App), while the wall charger delivers 1.9A.
Mr.Pintu said:
Can someone recommend a car charger that I can buy in the UK that can charge the S4 reliably at 2A? I tried a few so-called 2A chargers, but they are only able to deliver 1.1A (as measured by the Galaxy Current App), while the wall charger delivers 1.9A.
Click to expand...
Click to collapse
I've ordered this 2a charger for the car and am just waiting for it to arrive now (from South Korea...).
http://www.ebay.co.uk/itm/221224291949?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648
Pleomax is apparently a subsidiary company of Samsung, so I'm expecting compatibility/functionality to be good.
I ordered the following holder to go with it too, from the same manufacturer and seller, its currently in the same shipment as the charger:
http://www.ebay.co.uk/itm/SAMSUNG-G...AU_MobilePhoneAccessories&hash=item4ac397a9c3
Mr.Pintu said:
Can someone recommend a car charger that I can buy in the UK that can charge the S4 reliably at 2A? I tried a few so-called 2A chargers, but they are only able to deliver 1.1A (as measured by the Galaxy Current App), while the wall charger delivers 1.9A.
Click to expand...
Click to collapse
Just to point out.... While you do need a 2A+ charger, the cable also plays a huge factor. I've measured anywhere from 460mA to 1900mA depending on the cable plugged into it.
Sent from my SGH-M919 using xda premium
I guess you could consider a aftermarket charger a accessory....... so ive seen on here that every one is pretty satisfied with the 2amp charging speed on our phones, I had a 3amp charger (lost it) that I tried to charge my gs3 on and the battery got really hot. I wonder if a 3amp usp port would charge the gs4 faster?? Or just be a wast of money?
Sent from my SAMSUNG-SGH-I337 using xda premium
MattZ71 said:
I guess you could consider a aftermarket charger a accessory....... so ive seen on here that every one is pretty satisfied with the 2amp charging speed on our phones, I had a 3amp charger (lost it) that I tried to charge my gs3 on and the battery got really hot. I wonder if a 3amp usp port would charge the gs4 faster?? Or just be a wast of money?
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
Imo its a waste of money... I personally am still going to use my 850mA chargers in most cases, but Ill keep my 2amp nearby in case I need a quick 20% mid day
MattZ71 said:
I guess you could consider a aftermarket charger a accessory....... so ive seen on here that every one is pretty satisfied with the 2amp charging speed on our phones, I had a 3amp charger (lost it) that I tried to charge my gs3 on and the battery got really hot. I wonder if a 3amp usp port would charge the gs4 faster?? Or just be a wast of money?
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
S4 has a hardware limitation on charging current, right now it won't go above 1100mah while charging which is 1.1a, perhaps in future with kernel development we'll be able to raise the charging current but for now purchasing a charger above 2a would be completely useless.
Sent from my S IV (Octa Core Beast)
I mean most of the charging I do for my phone is when im asleep
Thanks for the replys. The information I needed.
Sent from my SAMSUNG-SGH-I337 using xda premium
Nasty_z said:
S4 has a hardware limitation on charging current, right now it won't go above 1100mah while charging which is 1.1a, perhaps in future with kernel development we'll be able to raise the charging current but for now purchasing a charger above 2a would be completely useless.
Sent from my S IV (Octa Core Beast)
Click to expand...
Click to collapse
On this point what you need to realize is that the usb cable loses a bunch of the power on the way... so like, a 3 foot cable might deliver most of the power to the phone ... a 10foot cable might only deliver 66% of it... so really a 2amp charger is whatthe s4 needed but going above it is kind of useless
The S4 actually goes to 1,910a when charging, I've checked with and app (galaxy charging current) that's why it charges so fast
Mine shows the same thing
duykhang524 said:
The S4 actually goes to 1,910a when charging, I've checked with and app (galaxy charging current) that's why it charges so fast
Click to expand...
Click to collapse
Do the lights dim everywhere in your house?
Oh and guys/gals, you cannot get around Ohm's law. 2A at 5V is 10Watts. You can use a 10A (50W) PSU but your phone will only use what it's designed to charge at unless you increase the voltage which I don't recommend unless you like to smell burned electronics.
Larger power supplies do have an advantage, however. You can charge multiple devices at the same time, i.e. a tablet, phone, spare battery, all at once. Good to prepare for a storm like we had last night here.
duykhang524 said:
The S4 actually goes to 1,910a when charging, I've checked with and app (galaxy charging current) that's why it charges so fast
Click to expand...
Click to collapse
Are you guys serious? I have the original charger from Samsung, mine charges at 1100 according to the same app
Edit: uh whoops..
Just checked, it says 1900 - sorry for the confusion
Sent from my S IV (Octa Core Beast)
cpufrost said:
Do the lights dim everywhere in your house?
Oh and guys/gals, you cannot get around Ohm's law. 2A at 5V is 10Watts. You can use a 10A (50W) PSU but your phone will only use what it's designed to charge at unless you increase the voltage which I don't recommend unless you like to smell burned electronics.
Larger power supplies do have an advantage, however. You can charge multiple devices at the same time, i.e. a tablet, phone, spare battery, all at once. Good to prepare for a storm like we had last night here.
Click to expand...
Click to collapse
10w is not a lot btw... My laptop pulls 60w on load and a hair dryer is 1000w... I mean't 1.9A sry for the confusion in french we use "," for the decimals in numbers
Nasty_z said:
Are you guys serious? I have the original charger from Samsung, mine charges at 1100 according to the same app
Edit: uh whoops..
Just checked, it says 1900 - sorry for the confusion
Sent from my S IV (Octa Core Beast)
Click to expand...
Click to collapse
1900 here for me as well, USB cords can also limit the current supplied, can only get this rate on a 6' (or less) my 10' and 15' each drop down quite a bit
duykhang524 said:
10w is not a lot btw... My laptop pulls 60w on load and a hair dryer is 1000w... I mean't 1.9A sry for the confusion in french we use "," for the decimals in numbers
Click to expand...
Click to collapse
Haha yes I figured, just being sarcastic, no harm meant.
I will add using this app I find interesting results of cable length vs. mA delivered. If you want to charge fast use a shorter cord.
I may connect it to a bench supply and see how it reacts to a gentle overvolt, say 5.5V. This could be what's needed to compensate for a longer cable, i.e. getting ~2A with a ten foot cable!
cpufrost said:
Haha yes I figured, just being sarcastic, no harm meant.
I will add using this app I find interesting results of cable length vs. mA delivered. If you want to charge fast use a shorter cord.
I may connect it to a bench supply and see how it reacts to a gentle overvolt, say 5.5V. This could be what's needed to compensate for a longer cable, i.e. getting ~2A with a ten foot cable!
Click to expand...
Click to collapse
Since the S4 is using QuickCharge from Qualcomm, I wonder if a generic 2A charger would affect charging time. http://www.anandtech.com/show/6914/samsung-galaxy-s-4-review/2
duykhang524 said:
Since the S4 is using QuickCharge from Qualcomm, I wonder if a generic 2A charger would affect charging time.
Click to expand...
Click to collapse
I'm guessing that this only applies to the GT-I9505?
Sent from my GT-I9500
guywhoeatsjello said:
I'm guessing that this only applies to the GT-I9505?
Sent from my GT-I9500
Click to expand...
Click to collapse
Yea
datrumole said:
1900 here for me as well, USB cords can also limit the current supplied, can only get this rate on a 6' (or less) my 10' and 15' each drop down quite a bit
Click to expand...
Click to collapse
Just a thought but what about a 10ft+ cord with a 3 amp charger? I wonder if the 3 amp will bring up the charging?
Sent from my SAMSUNG-SGH-I337 using xda premium
cpufrost said:
Do the lights dim everywhere in your house?
Oh and guys/gals, you cannot get around Ohm's law. 2A at 5V is 10Watts. You can use a 10A (50W) PSU but your phone will only use what it's designed to charge at unless you increase the voltage which I don't recommend unless you like to smell burned electronics.
Larger power supplies do have an advantage, however. You can charge multiple devices at the same time, i.e. a tablet, phone, spare battery, all at once. Good to prepare for a storm like we had last night here.
Click to expand...
Click to collapse
The currents which we're discussing when charging apply from the phone to the battery which subsequently uses the battery voltage as a charging indicator. Those 1.9A only happen at low battery percentages with voltages around 3.6V or lower, with raising voltage the current is limited. This is basically what QC quickcharge is. I don't really see the gimmick in it, as such a logic could be emulated in software on any phone.
I have note2 right now which have to go. But I'll keep my office charger which is 2A.
Can I safely use it to charge n5?
Sent from SGH-i317m
Using chargers with a high power (A) is no problem, the phone will not "take" more than it needs.
Sorry for the poor english ^^
The issue is if charging IC can handle 2A current or not. I dying wanna fry it lol
I would think it should not be an issue while 2A ICs are widely used in our days, but "better be safe then sorry".
Sent from SGH-i317m
I charge mine with my xz charger 1.5a no problem
The charging block that comes with the Nexus 5 is 5.0 volt, 1.2 amp.
Jbondop said:
I charge mine with my xz charger 1.5a no problem
Click to expand...
Click to collapse
While AFAIK there's no 1.5A ICs, than its 99% safe to say they using 2A nominal IC.
Thanks guys
Sent from SGH-i317m
If using a different charger was a problem they would have made the connection something other than micro USB.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Not really. Charging current depends on IC installed, not the connector itself.
Sent from SGH-i317m
From what I understand, you could use a 10A charger and still be fine. The handset will not take any more than it needs. Basically, the charger doesn't push current, the phone pulls it.
TopherBarnett said:
From what I understand, you could use a 10A charger and still be fine. The handset will not take any more than it needs. Basically, the charger doesn't push current, the phone pulls it.
Click to expand...
Click to collapse
Thats correct and nothing else. No way to destroy a phone with too much A because it just takes as much it needs. The 2A on an charger is just the maximum power output. It is physical impossible to PUSH the ampere in the device.