Related
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.
So I figured a wireless charger will prevent my otterbox from stretching out and all. What ive found to be a pain in the ass compared to all videos ive seen. Every one people just throw the phone on top. Comes on charging. My phone complains for me to center the circle on the screen with the dot in the center of my QI charger.
Anybody else notice this? Or is the droid maxx just a pain in the ass to wireless charge?
I think it's a good idea. This is the reason I bought the Palm Pre
Sent from my SCH-I545 using Tapatalk 4
good idea :good:
Good to imagine that with one wireless charger at home, all you phones and tablets get charged automatically.
Good idea :thumbup:
Sent from my R8113 using xda premium
I dont like wireless charging too much. Jt wasts energy and isn't much "stylier" than charging it in a dock.
Sent from my GT-I9505G using xda app-developers app
Its nice but I prefer to charge via wire my s4 stock charger charges at 2 amps a second where as the wireless charger only charges at around .5 amps so instead of taking around 2 hours to charge it would take around 5 hours .
Sent from my GT-I9505G using xda app-developers app
clapper66 said:
Its nice but I prefer to charge via wire my s4 stock charger charges at 2 amps a second where as the wireless charger only charges at around .5 amps so instead of taking around 2 hours to charge it would take around 5 hours .
Sent from my GT-I9505G using xda app-developers app
Click to expand...
Click to collapse
Hi, I think there are a couple of technical specs being quoted.
. . . my s4 stock charger charges at 2 amps a second . . .
Click to expand...
Click to collapse
I think you meant the charger rating is 2 amps. Battery has a rating of amp/hr, but not chargers. They are only rated at amps. E.g., if a battery is rated at 60 amp/hr, and it is flat, to fully-charge using a 2 amp charger it will take about 30 hrs (30 * 2 = 60). That's only theoretical because other factors take into play: the condition of the electrolyte, the physical condition of the battery, the performance of the charger, ambient temperature and humidity, etc.
. . . the wireless charger only charges at around .5 amps so instead of taking around 2 hours to charge it would take around 5 hours. . .
Click to expand...
Click to collapse
If charging at 2 amps take 2 hours, then charging at 0.5 amps will take 8 hrs (2.0 / 0.5 * 2 = 8)
In the above examples, I am assuming that the battery and charger Voltage rating is the same.
Just clarifying.
I want a spot in my car where you set your phone and it wirelessly charges while playing your music via bluetooth and doing calls/texts via bluetooth and voice. Set your phone there when you get in the car and it is fully powered, charging, and ties into everything. It needs some mechanism to keep the phone there (some sort of clamp?) and be positioned well for GPS usage.
Wireless charging will be awesome once there is a standard and it starts getting built into things like that.
Good:thumbup:
Sent after :stirthepot:
I'm scared about electromagnetic wawes, 3G and Wi-Fi already hurts, but the idea is good.
thats a good idea
seems to be a good idea so far i like it
bad idea
That's the one thing I wish my phone had. Want this feature very bad.
Not to even mention for the no wear and tear on the Charging Port which can be a weakness.
wireless charging
which devices supports wireless charging
It charges my phone slowly.
Stock charger takes 2.5 hours and wireless chargers takes 3-4 hrs to charge full.
--------------------Signature--------------------
http://hmpshah.com/signature/
As much as i think it would be convenient, i still use my phone a lot when is charging, that's something you can't do with a pad
Sent from my XT912 using xda app-developers app
-totonio- said:
I'm scared about electromagnetic wawes, 3G and Wi-Fi already hurts, but the idea is good.
Click to expand...
Click to collapse
Think of it as a transformer with the primary and secondary coils not firmly attached to each other. It's no more dangerous than any AC adapter. Of course, if they decided to make these chargers to work at a distance, there might be some risk. (shades of Tesla!)
-totonio- said:
I'm scared about electromagnetic wawes, 3G and Wi-Fi already hurts, but the idea is good.
Click to expand...
Click to collapse
I totally agree, there should be thorough study on the electromagnetic waves not affecting the memory cards and the volatile storage inside the phone... might result in data loss?
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?
Click to expand...
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
What's the side effect of using 2A output powerbank on the cellphone ?
From my experience, the output of cellphone adaptor usually between 500mAh-1Ah. Well, except phone with bigger screen (which i don't have).
What i notice is, the back of the phone are usually hotter compare if i charge my phone using phone adaptor or via usb.
I am kinda worry with this excess heat. Heat is not good for electric components.
It will shorten the lifetime of the battery
phi7ip said:
It will shorten the lifetime of the battery
Click to expand...
Click to collapse
Seriously ?
Yes, if the phone is not designed for 2A
Sent from my GT-I9300 using Tapatalk
phi7ip said:
Yes, if the phone is not designed for 2A
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
What about a phone that's designed for 750mAh and it's being charge with 1.2A powerbank ? Since the common minimum powerbank output are 1.2A.
Even that would be harmful there are 500mA powerbanks available which would be ok
Sent from my GT-I9300 using Tapatalk
phi7ip said:
Even that would be harmful there are 500mA powerbanks available which would be ok
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
I see. Thank you.
What about the opposite. 1.5A capable cellphone that's being charge with 750mAh charger ?
I think it would be fine. Just the time it needs to charge the phone is longer. What do you think ?
That would be perfectly ok, you're right it just takes longer to charhe
Sent from my GT-I9300 using Tapatalk
it does not work with my touchpad (HP). If i not charge with 2A output is no charge
Samsung offers two wireless charging pads. One is mini and the other is standard size. Is it just the size that is the difference? Does one charge faster than the other?
Standard:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-P100IJWUST2
Mini:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-PG900IBUSTA
slickdealers said:
Samsung offers two wireless charging pads. One is mini and the other is standard size. Is it just the size that is the difference? Does one charge faster than the other?
Standard:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-P100IJWUST2
Mini:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-PG900IBUSTA
Click to expand...
Click to collapse
It looks like the mini only does 1amp charging while the standard does 2amp charging. In short, the standard will charge your phone faster.
johnduggins said:
It looks like the mini only does 1amp charging while the standard does 2amp charging. In short, the standard will charge your phone faster.
Click to expand...
Click to collapse
That's totally lame. I was going to get the mini just because it looks better and more professionally styled. But I guess not anymore.
Sent from my SAMSUNG-SM-G900A using Tapatalk
johnduggins said:
It looks like the mini only does 1amp charging while the standard does 2amp charging. In short, the standard will charge your phone faster.
Click to expand...
Click to collapse
Where did you get that info from? In the description of the mini one it clearly states is comes with a 2A charger!
My understanding is that the mini is a new model released with the S5 whereas the other has been around for at least a year now.
Even if it comes with a 2A charger it only charges at 1amp. It's a limitation of wireless charging
Sent from my SM-G900P using Tapatalk
eyecon82 said:
Even if it comes with a 2A charger it only charges at 1amp. It's a limitation of wireless charging
Sent from my SM-G900P using Tapatalk
Click to expand...
Click to collapse
He said one charges 2A and one charges 1A. Is that even possible?
Sent from my SAMSUNG-SM-G900A using Tapatalk
Pure+ said:
He said one charges 2A and one charges 1A. Is that even possible?
Sent from my SAMSUNG-SM-G900A using Tapatalk
Click to expand...
Click to collapse
Even if the charger is 2amps, it will only charge at 1amp wirelessly
Sent from my SM-G900P using Tapatalk
eyecon82 said:
Even if the charger is 2amps, it will only charge at 1amp wirelessly
Sent from my SM-G900P using Tapatalk
Click to expand...
Click to collapse
Well that kinda blows. And makes wireless charging a whole lot less attractive.
Sent from my SAMSUNG-SM-G900A using Tapatalk
Pure+ said:
Well that kinda blows. And makes wireless charging a whole lot less attractive.
Sent from my SAMSUNG-SM-G900A using Tapatalk
Click to expand...
Click to collapse
It's meant for overnight charging mostly
Sent from my SM-G900P using Tapatalk
eyecon82 said:
It's meant for overnight charging mostly
Sent from my SM-G900P using Tapatalk
Click to expand...
Click to collapse
I guess that sorta makes sense. I figured I'd use it more like drop my phone down to charge up a bit real quick before heading back out the door. Kind of a busy life style type thing.
Sent from my SAMSUNG-SM-G900A using Tapatalk
Pure+ said:
I guess that sorta makes sense. I figured I'd use it more like drop my phone down to charge up a bit real quick before heading back out the door. Kind of a busy life style type thing.
Sent from my SAMSUNG-SM-G900A using Tapatalk
Click to expand...
Click to collapse
Ya, it's not good for that. It won't charge it as fast then
Sent from my SM-G900P using Tapatalk
The S5 has more than 2 points of contact for the wireless charging back. Not sure if it is for nfc, but maybe the doubled the charging capabilities by having two separate charging coils?
Edit: This is my first post is 5 years, I feel like a lurker.
The power of pad doesn't matter, the coil from the back of the case is the charging source. So for s4 note 3 it's 650 mamps and the new one for s5 is 700 mamps( if i spoted right in the pictures). The difference is in aspect and size only.
Sent from my GT-I9192 using XDA Premium 4 mobile app
eyecon82 said:
Even if the charger is 2amps, it will only charge at 1amp wirelessly
Sent from my SM-G900P using Tapatalk
Click to expand...
Click to collapse
Are they up to 1A now? Last I checked, there wasn't a wireless charger anywhere that charged faster than 850mAh. Which is only 30% as fast as the USB 3.0 charging of 2500mAh.
calinormy said:
The power of pad doesn't matter, the coil from the back of the case is the charging source. So for s4 note 3 it's 650 mamps and the new one for s5 is 700 mamps( if i spoted right in the pictures). The difference is in aspect and size only.
Sent from my GT-I9192 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
If you look at pictures the S5 official wireless cover charges at 760ma.
http://galaxys5accessories.com/wp-content/uploads/2014/04/galaxys5wirelesschargingback-1024x1024.jpg
http://www.google.com/imgres?imgurl...iact=rc&uact=3&dur=165&page=1&start=0&ndsp=38
CZ Eddie said:
Are they up to 1A now? Last I checked, there wasn't a wireless charger anywhere that charged faster than 850mAh. Which is only 30% as fast as the USB 3.0 charging of 2500mAh.
Click to expand...
Click to collapse
1amp is theoretical charging speed.
Just like how the phone stock charger is 2amps, it will max out at around 1.8 amps
-Sent from Tapatalk
DUDES!!!
crazy deal alert!!!!
https://www.att.com/shop/wireless/a...SeamY-J3vRF_EfP2sNh9tk4YMK0g#fbid=aqbV1QTbPJK
$5 each and if you buy 3 or more, you get 25% off, so I got 3 for $11.25
Here is a review of it
http://unleashthephones.com/2013/01/26/nokia-fatboy-wireless-charging-pillow-review/
Get them while they last!!
I have three wireless chargers. The small original Samsung, one Nillkin and a noname. I am using the original charging back from Samsung. I am very happy with the small original Samsung charger. The S5 gets much less warm than with the both others and it stops charging at 100%.
I had it on the Nillkin over night and the next day when it has been at nearly 100% already in the evening it was extrem hot at the morning and still charging but it showed 100% but not the full message at all. Very suspicious. With the noname I very often have the wireless charging detected message when it comes over 9x% so it looks as if the charger often "looses the connection" to the wireless charging back cover.
The original small Samsung charger says 5,3V and 2A on the back and it loads at maximum wireless power with the original back cover and the original power supply. For me this is the best combination. The only thing is, that you cannot use the S5 very well while charging because of the small charging pad. I most time take the charging pad with the S5 in one hand so it cannot tilt.
slickdealers said:
Samsung offers two wireless charging pads. One is mini and the other is standard size. Is it just the size that is the difference? Does one charge faster than the other?
Standard:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-P100IJWUST2
Mini:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-PG900IBUSTA
Click to expand...
Click to collapse
3 coils vs 1 coil.
3 coils is better with cases and easier to place the phone on it.
timeToy said:
3 coils vs 1 coil.
3 coils is better with cases and easier to place the phone on it.
Click to expand...
Click to collapse
Both samsung charger are 1 coil.
3 coil offer a wide surface detection, but does not mean it's better that a single coil charger.