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I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.
Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
I don't think it depends on the current.
With my factory charger, if I insert the charger in and kinda pull out one side of it, it will think it's a computer and I can "mount" my sd card. so it might be a certain way the connectors touch inside
saint168 said:
I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.
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It depends on the charger, but yes, the phone for the most part can tell the difference. It has to do with the voltage that is put out.
Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Click to collapse
It has nothing to do with amperage (unless it is under 500) and everything to so with charging source. Wall chargers basically short the data wires to indicate AC charger and car chargers do not.
There is a thread in accessories forum discussing this and mods to get full charging out of car chargers. I did it by modding an extra cable. My car charger puts out 1 amp but the phone never draws more then ~ 750 mah.
Sent from my MB520 using XDA App
Dungeon47 said:
Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.
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Every time I read one of your posts, in my head is McGyver's voice. Hearing him narrate the xda forums is hilarious.
From a phone
The phone can take up to 1000mA of charging current. But only if it detects it is on one of its supported AC chargers. Draw more than 500mA on a PC USB port may damage it. So, there is special wiring needs to be done for the data PINs on the USB port. That's why for generic car charger and wall chargers, it can't only assume it is PC USB port and charges at a slower pace (500mA). You will need the Samsung AC or Car charger to charge at higher current. I managed to mod one of car charger to be recognized as AC charger (no USB prompt). And you really need it because if you're using the phone as GPS navigation device, 500mA won't be able to sustain it (battery will keep be drained). You need 700ma or more.
It also depends if you have your USB connection set to a default if you will get that pop up when you connect it to any other than an AC charger.
Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Click to collapse
Yes it does and is sensitive. I have been using a BT headphone charger and I would be perplexed that my phone showed 100% but pull the plug and its at 87% every morning AFTER recalibrating the battery.. LOL
Decided to use the Samsung Charger and no such issues. Needs those extra Milliamps.....
Anyone using this charger with their Inspire4G?
I've tried using this charger with my phone, with several different cables, including the OEM cable. I can only ever get the phone to charge at the USB rate, not the AC charge rate.
Is this normal or is my charger defective?
http://scosche.com/consumer-tech/product/1921
I would assume thats because the 2.1A is ment for Ipad/Iphone/Ipod devices as they require a larger amp charge.
The 1.0A is ment for all other USB devices.
States that in the description.
Charge your iPad and an additional USB powered device at once
Use your existing USB cables to charge any additional USB powered devices
2.1 Amp USB port for charging iPad
1 Amp USB port for charging additional devices
Were are you getting AC Charge rate / USB Charge rate ?
On both ports, I'm only getting the USB charge rate.
d00mz said:
On both ports, I'm only getting the USB charge rate.
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What do you meen USB Charge Rate..
I am going to guess ..
AC Charge Rate = Wall Charger
USB Charge Rate = Computer USB 2.0/3.0
Does car charger port provide enough amps to give full value?
metaldood said:
Does car charger port provide enough amps to give full value?
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Yes. See below.
xKrisx said:
What do you meen USB Charge Rate..
I am going to guess ..
AC Charge Rate = Wall Charger
USB Charge Rate = Computer USB 2.0/3.0
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Click to collapse
when you go into Settings -> about phone -> Battery
It will show you the charging status. USB Charging typically is no more than 500ma. AC charging should be 1a.
I have an old AT&T brand car charger that charges the phone in "AC" mode.
This is were I am still getting confused.
What ROM are you running, Stock / MIUI / CM7 / or a Rom based off of stock ?
Is it 2.3.3 or 2.2.1 or 2.3.4 ?
I don't have those reading under battery status.
Anyways, I will go ahead and make the assumption that your car charger is busted and need to get it replaced.
This is were I don't get were you are stating AC Charging.
Alternating Current = AC Direct Current = DC
You cannot charge a battery " DC " with an Alternating Current " AC " period. Thats why all battery chargers reguardless of type convert AC power to DC.
Then only thing I can think of is maybe your phone can detect what type of charger it is connected to, displaying it as an AC Wall Charger or a DC Car/USB Charger.
Wall Chargers will generaly charge quicker then a computer USB Charger. Car charger typicaly charge quicker then most wall chargers.
Most Car chargers are very poor at controlling the amperage being supplied. They may stay at the right voltage but rest assured, you hit a 5v 2amp battery with a 5v 10amp charge and your going to fry it. This is the reason I dislike car chargers.
I can only see one of two problems with your Car Charger ;
1: the Car charger is bad
2: your 12 Power source port is not supplying the correct amperage that your car charger requires. IE:
I have the HTC Car dock for my inspire. It has an imput requirement of 12V 5 Amps to operate efficiently. The Power supply I have it plugged into is the 12V 20A Accesory Port in the front of my truck. It works just fine.
If your device requires say 12v 5 Amps to operate efficiently yet your car is only supplying 12v 1 Amp due to bad wiring, old fuses or bad connections your car charger will not charge at idicated levels.
The ROM is simply displaying "USB" if it is drawing 500ma charge, or "AC" if it's drawing 1000ma charge.
I'm running the 2.2.1, the LeeDroid_HD_V.2.0.0 ROM
d00mz said:
The ROM is simply displaying "USB" if it is drawing 500ma charge, or "AC" if it's drawing 1000ma charge.
I'm running the 2.2.1, the LeeDroid_HD_V.2.0.0 ROM
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Click to collapse
Ok, so your saying that when you have the Car Charger plugged up and your device connected, your only getting a 500ma charge. When you use your old ATT Car Charger it shows 1000ma.
500ma = .5 Amps
1000ma = 1.0 Amps
If your not getting over 500ma out of your car charger then either 1 of two things.
Car Charger is busted, get it replaced.
Car is not putting out correct Amp - Voltage for the car charge to operate correctly.
Your old car charger could have different requirements and that is the reason it works, your new one could use a deifferent set and may not work.
Regardless, its not working in your car, try it in a friends and see if it works, if not then the charger is broke, if it does, then your car is broke.
Try usiing current widget while charging.. and see the readings
Inspired from my Inspire 4G using XDA Premium App
i don't know what you are talking about here. The 2.1 Amp option is NOT the AC charging rate. It is pretty clear if you look at the stock HTC charger that comes with the phone, it says it outputs "1.5 V at 1A".
And anyways...if you look at the product description on the link you posted, it CLEARLY states the 2.1A is for charging an iPad.
buddy17 said:
i don't know what you are talking about here. The 2.1 Amp option is NOT the AC charging rate. It is pretty clear if you look at the stock HTC charger that comes with the phone, it says it outputs "1.5 V at 1A".
And anyways...if you look at the product description on the link you posted, it CLEARLY states the 2.1A is for charging an iPad.
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I've used both ports on the reVIVE II, both the 2.1a and the 1a. Both only report the phone charging at 500ma
d00mz said:
I've used both ports on the reVIVE II, both the 2.1a and the 1a. Both only report the phone charging at 500ma
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Click to collapse
sorry...i thought you were referring to the AC rate as the 2.1A port, and the USB rate as the 1A port.
After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
k00zk0 said:
After using a wall adapter to micro USB port charger that only supplies 0.7 A instead of the 1 A the stock charger does, the lower adapter got very hot. Does the phone still try to draw one amp if its not connected to a PC through usb? Considering the standardization of micro-usb it would seem like G2x owners will try to use chargers at friends houses for other phones and it may not be the safest thing. Any input?
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Click to collapse
Phone can only draw as much power as the charger supplies, up to something like 1 amp. If the charger supplies less than that, then it only draws what the charger supplies. If the charger supplies more than 1 amp, then it will still only draw the 1 amp that it needs. The more important thing to ensure is that the voltage of that charger is the same as the stock charger.
G2X CM7
squish099 said:
My factory LG charger only provides 0.7 amps.. but I use my hd2 charger that provides 1 amp cause the phone charges a little faster on it.. so I don't understand what your actually trying to say?
Sent from my LG-P999 using XDA Premium App
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It's strange we got different chargers. This one outputs 4.8V at 1.0A. It also squeals when the phone is in standby. If i wake it it stops humming. Model STA-U13WR2. I wonder if charge rate has to do with anything bad? When the charge says completed and it is plugged into a USB port, it will charge for another hour at times. Makes sense since a high charging rate will cause the battery voltage to spike and read as if the charge is complete when it's still got room.
Has anyone managed to get a car charger for this phone?
I've just tried to charge the phone with my car charger modded to "AC" mode by shorting the middle pins... and the S4 gets nada...
Have they changed the charging mechanics?
Is that what's going on? I was wondering what the heck was wrong with my charger!
Yup, the car charger still charges my old HTC, even with the Samsung cable... so there's definitely something different inside the charger...
I have a 2A usb car charger with generic cable to charge my devices. It's nothing special, but it works with my S4. Hope that helps.
http://www.monoprice.com/products/p...=10826&cs_id=1082603&p_id=8858&seq=1&format=2
I have this charger and it charges my GS4. Of course, I bought it 2 years ago.
EDIT: I guess it helps when I paste the link. Duh... http://www.amazon.com/Verizon-Vehicle-Charger-USB-Port/dp/B003NA0658
I have a 500mA car charger and it didn't work. Even though it worked on my Xperia Z. I bought a 2A charger from Maplin and it works just fine.
Sent from my GT-I9505 using Tapatalk 2
delete
moobieboobie said:
I have a 2A usb car charger with generic cable to charge my devices. It's nothing special, but it works with my S4. Hope that helps.
http://www.monoprice.com/products/p...=10826&cs_id=1082603&p_id=8858&seq=1&format=2
Click to expand...
Click to collapse
I also have the same charger works just fine.
Sent via Galaxy S4
Hmmm will have to look into getting a decent 2A charger then and NOT modifying it...
So I opened up my car charger and un-modded it back to original and it works like a charm now
I've got a 1A Belkin car charger and it seems to overload after a while when charging my gs4.
The green light on it blinks and my phone makes that sound when you plug in the charger.
Takes a while for it to happen but gets more frequent the longer you have it plugged in.
The charger works fine with my gf's nexus 4.
ttsprnkls said:
I've got a 1A Belkin car charger and it seems to overload after a while when charging my gs4.
The green light on it blinks and my phone makes that sound when you plug in the charger.
Takes a while for it to happen but gets more frequent the longer you have it plugged in.
The charger works fine with my gf's nexus 4.
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Click to collapse
I'm using the Motorola charger (big blue circle). Got it for my Razr Maxx a year or so ago (I've gone through like 4 phones since then) and it works wonderfully. It's the best micro-USB car charger I've ever seen. Coiled cord, huge blue light (but not too bright since it's an ambient-style light), and charges quickly.
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA
Seriously, the best car charger I've ever owned. 950mA is also one of the highest car chargers I've used.
I used to have that same motorola charger but I just switched to this one by SPIGEN: http://www.amazon.com/gp/product/B0069EGLFY/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
It charges at the same amperage as the stock wall charger that came with the S4. I use the Galaxy Charging Current app to check.
5280WRX said:
I used to have that same motorola charger but I just switched to this one by SPIGEN: http://www.amazon.com/gp/product/B0069EGLFY/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
It charges at the same amperage as the stock wall charger that came with the S4. I use the Galaxy Charging Current app to check.
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Click to collapse
really 1900mAh??
if you say "yes" i'll order one
5280WRX said:
I used to have that same motorola charger but I just switched to this one by SPIGEN: ...
It charges at the same amperage as the stock wall charger that came with the S4. I use the Galaxy Charging Current app to check.
Click to expand...
Click to collapse
Do you use it with the original cable or a generic one? I read that there are some differences in charging amount using also different cables. This SPIGEN Car charger looks very interesting. Thanks!
TrueTenacity said:
Has anyone managed to get a car charger for this phone?
I've just tried to charge the phone with my car charger modded to "AC" mode by shorting the middle pins... and the S4 gets nada...
Have they changed the charging mechanics?
Click to expand...
Click to collapse
I have tired a few most only charged at 400-500 m-amps (aka running with gps and screen on discharged it faster then it was charging) with some random picks at fry's i found one that was marked 3 amp charger that whould do 780 m-amps so the phone still makes head way chargeing while being used as GPS
FYI the tool i use to measure says the Samsung charger is 1900 M-amps and my apple ipad charging brink is 1400 just for reference.
tool is Galaxy Charging Current Lite i would link it but the forum will not let me
Trueglich said:
I have tired a few most only charged at 400-500 m-amps (aka running with gps and screen on discharged it faster then it was charging) with some random picks at fry's i found one that was marked 3 amp charger that whould do 780 m-amps so the phone still makes head way chargeing while being used as GPS
FYI the tool i use to measure says the Samsung charger is 1900 M-amps and my apple ipad charging brink is 1400 just for reference.
tool is Galaxy Charging Current Lite i would link it but the forum will not let me
Click to expand...
Click to collapse
You can also use elixir 2, the battery stats will give amps while discharging and change when charging. I think it uses the current_now as reference.
I have a 2a usb car charger and I just use the usb cable from the phone. I bought the car charger from best buy.
Sent from my SCH-I545 using Tapatalk 4 Beta
fabian_b_m said:
Do you use it with the original cable or a generic one? I read that there are some differences in charging amount using also different cables. This SPIGEN Car charger looks very interesting. Thanks!
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Click to collapse
Different USB cables do pass different current even if using the same charging main. From tests I've done so far, a generic 3 ft USB 2.0 cable I randomly purchased online only allowed around 400 mA. An old Blackberry Torch 9810 cable allowed around 1200 mA. Original cable that came with the S4 allows 1900 mA. These numbers are from using the original wall charger main that came with phone.
Sent from my SGH-I337M using xda app-developers app
I bought an anker car charger and mediabridge charging usb cable and it's a great combo. The images of the anker car charger is different, should be dual usb ports.
http://www.amazon.com/Anker®-2-4A-2...=1375543576&sr=1-1&keywords=anker+car+charger
http://www.amazon.com/gp/product/B009W34X1I/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
I don't know the exact current I'm getting, but from the battery monitor widget app, I'm seeing at least 1amp or higher of positive current.
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
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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