Battery Charger ? - Galaxy S I9000 Accessories

Hi Here in Mexico dont have a UK plugs and of corse my phone charger dont fits o the outlet but i have a USB Charger I can plug the Data cable to carge but the only question i have is this specs
Samsung Original Travel Charger is output : 5V = 0.7a
My USB output : 5V = 0.5a
Please Help
I think the only diff is the charges Times is less amp takes more time to full the battery.

i use the uk charger here in the u.s. i believe they are set for multiple power inputs just get a cheap adapter to change the plug configuration. that is what i am using.

i posted the below in another charger thread but in case it serves here
not sure if a lot of folks are just unaware, but every phone i've had charged fine from a usb port off my computer
since i started tethering my phone to my laptop (browse the web from family couch) december 2009, i haven't used the wall charger
even if i'm not tethering, i've got a spare usb cable on the desktop, that when i sit down at the desk, the phone or whatever device, gets connected to - far more convenient and fewer items occupying space on the desk
plus, i've got that Tmo car charger that just has a usb port on it's end - so the same cable that i use to tether to the laptop (when in the car), if i'm using the phone in the dock for nav, runs down to the charger - the charger, with no cable hanging off it when not in use, let's me leave the charger in the socket 24/7 - no looking for it in the glove box and untangling it etc
that charger is simply converting the 14V car voltage to 5 V the USB port normally delivers
2 - 3.5 hours seems to take my 1150mah battery from low charge to full
for what it's worth

celtichazard said:
Hi Here in Mexico dont have a UK plugs and of corse my phone charger dont fits o the outlet but i have a USB Charger I can plug the Data cable to carge but the only question i have is this specs
Samsung Original Travel Charger is output : 5V = 0.7a
My USB output : 5V = 0.5a
Please Help
I think the only diff is the charges Times is less amp takes more time to full the battery.
Click to expand...
Click to collapse
There is nothing wrong with that. 5V is all you need. As long as you don't supply too high a voltage, your batteries should be safe. Don't worry about the amperage (current). Lower current (0.5a vs 0.7a) just means that it takes longer to charge the batteries.
And for those who really must have a wall charger that charges the batteries directly, you can buy a universal USB charger (http://www.dealextreme.com/details.dx/sku.15264). It works great. It plugs into any USB charger or laptop USB port, and charges any battery rated 3.7V. You can find them on eBay for just a couple of dollars.

Related

Fast charging N1

It seems the only way to fast charge a N1 is with the supplied wall charger. Standard Micro USB chargers whould only allow at much as 450mA of charge current regardless of the adapter current capacity.
The bundled charger however, manages to push 900mA into the N1. I made a cut in the charger wires and measured the current draw to make sure.
Now.. I'd like my car charger to be able to do the same. There must be some hack in the plug of the N1 charger since there are only 2 conductors from the case to the plug. You can see that the plug is somewhat longer than similar Micro USB plugs..
So I tried to see if one of the 3 unused pins can tell me anything but.. they seem unconnected as far as I could tell. Diode measurement (to test for any digital part inside) also did not produce any results. The next obvious step is to take the molded plug apart but I'd rather not...
Does anyone have any clue as to what makes that plug so special?
And please - I did my tests with a bench power supply - not the car chargers - so don't go around telling me it has to do with charger current capacity.
Thanks,
Nir
are you sure the micro usb cords you are using are able to handle the amps? most chargers made prior to now, only push about 450mA, the G1, and N1 chargers i have push a full amp though. I just ordered a car charger that pushes an amp too. There is nothing "special" about the plug.
followinginsanity said:
are you sure the micro usb cords you are using are able to handle the amps? most chargers made prior to now, only push about 450mA, the G1, and N1 chargers i have push a full amp though. I just ordered a car charger that pushes an amp too. There is nothing "special" about the plug.
Click to expand...
Click to collapse
I beg to differ. All the cords can easily supply 1 AMP. It is the phone itself that decides how much to draw from the charger based on something IN THE PLUG.
I am an electronics engineer so do understand I know perfectly what I am talking about
And your 1A car charger does not supply anything over 0.45A to the phone.. you will see that if you are using the phone while it charges (say nav or phone call) the phone actually looses some charge albeit it being charged... This will not happen with the stock wall charger.
I have a 900mAh car charger that I use and it does in fact give 900mAh to the phone while charging. I can tell because I used a 450mAh charger at home before and it was slooow and I could drain my phone while charging it. With the car charger I can stream music with spotify, use the GPS, have the screen on full brightness and the battery % will still go up.
I also bought a new wall charger recently, which is 850mAh on the USB port and has a 350mAh charger for a loose battery as well, works quite nice.
Has anyone measured the voltage or put a scope on the output of the stock charger?
maybe stock charger has a slight variance in voltage over USB chargers or some signalling going on and this tells the N1 to take more current from it?
I would like a solution to this too I've seen my phone discharge while on a supposedly 1A car charger using co-pilot.
SBS_ said:
I have a 900mAh car charger that I use and it does in fact give 900mAh to the phone while charging. I can tell because I used a 450mAh charger at home before and it was slooow and I could drain my phone while charging it. With the car charger I can stream music with spotify, use the GPS, have the screen on full brightness and the battery % will still go up.
I also bought a new wall charger recently, which is 850mAh on the USB port and has a 350mAh charger for a loose battery as well, works quite nice.
Click to expand...
Click to collapse
Forget the numbers on the chargers - what counts is what really goes into the phone and that needs to be measured with a current meter (test equipment). What you may think to be fast might not be that.
Original HTC chargers obviously do the trick of fast charging but this comes at a price compared to the $3-$4 garden variety on Ebay and the likes.
now I cannot help you with the electronics at all, but, my old HTC Touch Pro charger seems to charge the same as the one which came with the phone, is this correct?
(suits me if it is, as then I have a charger for home and work)
my blackberry bold 2 charger only says it outputs 700MAh, but both the google and htc chargers both say 1.0A
dnts said:
Forget the numbers on the chargers - what counts is what really goes into the phone and that needs to be measured with a current meter (test equipment). What you may think to be fast might not be that.
Original HTC chargers obviously do the trick of fast charging but this comes at a price compared to the $3-$4 garden variety on Ebay and the likes.
Click to expand...
Click to collapse
Yes, it is just anecdotal evidence as I don't have any equipment to measure it. But my phone no longer discharges when I use it while charging, which it used to do with the old charger I used. So while I can say for a fact that the charger I use now is faster, I can't say by how much (this goes for both the car charger and the one I put in the wall socket).
I ordered this charger a few weeks ago and it charges my phone as fast as the original charger. The label says 5v / 1200mA.
Genuine Nokia Mini AC-10U US Type AC Charger (100~240V)
$7,25 and free shipping. (Takes a while before you get it tho.)
GazzaK said:
now I cannot help you with the electronics at all, but, my old HTC Touch Pro charger seems to charge the same as the one which came with the phone, is this correct?
Click to expand...
Click to collapse
HTC Touch Pro = mini USB
Nexus One = micro USB
Not an engineering here, but I am guessing the phone not always drawing more than 500ma may be is to do with the charger itself.
There is this "fast charge" USB standard where a wall plug has the USB data pins shorted to indicate that it is a wall plug and hence the phone knows when to draw more power. So even if the charger is rated 1A, the phone might not know if it could utilize that if those pins aren't shorted. Try doing a quick Google on this ....
If someone can test if the stock charger that came with the phone in fact does have those pins shorted that would confirm part of this theory.
For all practical purpose - I used two cables/plugs with a bench adjustable power supply. Simple micro USB plug would only let me draw 450mA regardless of power supply voltage in the range 4.5-5.5V. Tried shorting data pins - nothing. Tried shorting spare pin to VCC or GND or any of the other pins - nothing.
Used original cable and plug - draws 900mA at voltages from 4.9-5.5.
So it's in the plug somehow.
Tried (very difficult) to see if the pins on the plug are shorted and all 3 spares (except for 5V and GND) seems unconnected.
Next step is the irreversible hot knife...
I'm bugged by this, too. I tested with my desktop dock connected to my car charger (which states 1000 mA): it loads slowly and my battery widget reports USB- instead of AC-charger.
Might it be that the phone tries to load more than 1000 mA at the beginning to be sure that it doesn't overload the charger? And if that fails, it falls back to 500 mA?
Could N1 use a simple logic of:
- always watch the voltage
- start drawing 500ma (or whichever is the lowest current as per USB spec)
- increment in say 50ma steps
- if voltage drops below 4.x V, back off and stay at that level
I just did a little test of my own. I have a Palm Pre car charger (actual Palm brand one labeled as 1000ma output) and I plunged my N1 into it on my way home from work. In twenty eight minutes, my battery went from 47% to 70%. Much faster than plugging into my computer, which is 500ma max. I don't have any fancy test equipment, and don't claim to know a whole lot about electronics, but seems pretty fast to me.
I have a 4-port 2A 5v USB charger, and connecting it to my Nexus OR Milestone with a MicroUSB cable (the one that shipped with either phone, or the one from my Kindle) yields painfully slow charging - it basically won't charge if you are using the phone.
Connecting the Nexus One charger yields fast charging on either phone - so it is not HTC (or Motorola) proprietary.
The Milestone comes with a 900mA USB plug, and connecting THAT to either phone with either of the MicroUSB cables yields fast charging.
I have another aftermarket 2 port 2A 5V USB wall charger (brand: T'nB) AND I have an iPhone USB plug, and both give fast charging on the Milestone, and I have not yet tried them on the Nexus One.
Breakdown (on things I've tried):
FAST CHARGING on Nexus One AND Milestone:
Nexus charger (either in the US (110v/60hz) or in France (220v/50hz) through an adaptor)
Milestone wall French USB plug (which I think is something odd like 850mA at 5.9v) with ANY microUSB cable (in fact, it seems to charge both of the phones faster than the stock Nexus One plug)
SLOW CHARGING on Nexus One AND Milestone:
USB plug on computer
One aftermarket 4 port 2A 5V USB charger (NOT a hub, only a charger)
FAST CHARGING on Milestone, untested with Nexus One
T'nB 2 port 5v 2A USB wall charger
Apple iPhone 1 port 1A 5v USB wall adaptor
Seems found the answer for Fast Charging N1
I had just do some test for Charging N1 With Original AC Charger , Other band USB Charger and PC USB charger.
1. Orginal Charger give N1 from 0% to 100% at about 2 hour and something.
2. The other band AC charger and PC USB Charger can only finish the same job over 5 to 6 hours.
The Fast Charging is Due to 5.1V (Measured at N1) and 5.2V(Measured inside AC charger). 0.1V Drop is due to resistance of USB cable.
The Slow charged is due to 4.8V (measured at N1) and 5.0V (measured on PC USB and Other AC Charger)
i.e. Original Charger mod from 5.0 V to 5.2V (about 10% increase in Voltage)
Looks my theory is correct then ? N1 watches the voltage and if it droops too much, it backs off the current.
So the key would be: get a charger than can maintain at least 1A @ 5.2V, use
a decent gauge, short wire from the brick to N1.
Has anyone tried a Blackberry charger on the N1? Will they work to full capacity as well? (They're on Amazon for a fiver)
Because the nokia charger is working
http://pinoutsguide.com/CellularPhones-Nokia/micro_usb_connector_pinout.shtml
see info under table.
I tested also HP charger + standard USB cable delivered with Nexus, and it is charching cca 1A.
Then I tested one noname Carcharger + standard USB cable delivered with Nexus, and also charging cca 1A.
I dismantle the noname carcharger and here is a result:
data line (pin2+3) is shorted and connected do + (pin1 ,Vcc) thrue resistor cca 630kOhm.
1 - 4 = 5.1V
2,3 - 4 = 3.2V
rashid11 said:
Looks my theory is correct then ? N1 watches the voltage and if it droops too much, it backs off the current.
So the key would be: get a charger than can maintain at least 1A @ 5.2V, use
a decent gauge, short wire from the brick to N1.
Click to expand...
Click to collapse
I try to use power supply 5.2V 2A with cable without dataline (pin 2and3 not connected) and it is charging 480mA only.
I have now tested with an HTC car charger for the HD2. It's fast charging (tested with Waze running, two bluetooth connections and playing mp3 - and it's still loading the battery, whereas before it would be stuck at the current percentage) and even shows AC power instead of USB.

[Q] Are all USB Charges the Same?

I have about 5 Micro USB wall charger laying around, so when I got my Captivate I was happy to see that it used a Micro USB.
My question is.... Is all of the Micro USB power supplies the same? the ones i have are from different Motorola phones.
Thanks,
Coldheat1906 said:
I have about 5 Micro USB wall charger laying around, so when I got my Captivate I was happy to see that it used a Micro USB.
My question is.... Is all of the Micro USB power supplies the same? the ones i have are from different Motorola phones.
Thanks,
Click to expand...
Click to collapse
I assume you mean the wall charger. The charger and the cable are actually separate. You can plug any USB cable into this that has a female USB end. The other end could be mini, micro, ipod, or something else.
They are not all the same - the Moto charger delivers more Amps then the Captivate. Some charger deliver less. The phone will only draw what it is set to, so you can use just about all of them.
cool thanks
The short answer: It's probably fine
The long answer:
USB is a specification, so anything using usb should be designed to run at (for USB 2.0) 4.4-5.25 V. It *should* be fine for charging any microUSB device (the "U" is for "Universal") but I guess it's possible (though unlikely) that the company that made the charger did something funky/proprietary with the voltage/amperage, which would make it not USB even though it uses a USB port. See if the charger says the operating voltage/current on it. It should say around 5V and somewhere in the range of 150-900 mA. If it does, you're golden, if it doesn't say you're still probably fine.
The phone is actually quite picky about chargers. It can recognize a USB charger in either (1) AC wall charger or (2) USB charger. If your paritular charger can be recognized as AC charger, it can be charged in a faster rate if your wall charger can deliver. The Captivate comes with a 700ma wall charger. Some can deliver 1000ma or even higher but Captivate internally limits to 1000ma max from what I read. The higher the amprage, the faster it can charge the battery.
On the other hand, if your charger is recognized as USB charger, not only you will be prompted to select USB mode (if you configured to do so) as if you connect it to a PC, you will also be limited to maximum of 500ma of charging current per USB standard. It will be slower than the stock charger (which is slow already).
foxbat121 said:
The phone is actually quite picky about chargers. It can recognize a USB charger in either (1) AC wall charger or (2) USB charger. If your paritular charger can be recognized as AC charger, it can be charged in a faster rate if your wall charger can deliver. The Captivate comes with a 700ma wall charger. Some can deliver 1000ma or even higher but Captivate internally limits to 1000ma max from what I read. The higher the amprage, the faster it can charge the battery.
On the other hand, if your charger is recognized as USB charger, not only you will be prompted to select USB mode (if you configured to do so) as if you connect it to a PC, you will also be limited to maximum of 500ma of charging current per USB standard. It will be slower than the stock charger (which is slow already).
Click to expand...
Click to collapse
It is not "picky" it follows the USB specifications. For instance I have a 4 port USB wall charger that is capable of supplying 5 volts at 2000 mA to one port or 5v @ 500 mA to 4 ports. Unfortunately the charger is not complex enough to know how many devices are plugged in at once and therefore always signals to all devices to only use a maximum of 500 mA. So if those devices follow the specs they will only draw 500 mA max since it is seen as a high current device (low current devices only should draw 100 mA max).
I DO NOT RECOMMEND ANYONE OPEN UP ANY ELECTRICS EVER ESPECIALLY ONES WHEN CONNECTED TO THE AC LINES IN YOUR HOMES. IT IS A FIRE AND ELECTROCUTION RISK AND I NOR ANYONE ELSE TAKE RESPONSIBILITY FOR YOUR OWN STUPIDITY.
However I hacked it by adding a resistor of proper value between the data pins so that the phone if it wanted to could use the full 2000 mA. Know whenever plugged into that USB port the phone goes into AC mode and from some rough testing during the bulk charging phase the phone charges at a rate of 40% per hour instead of the USB modes 20% per hour. With this hack it takes roughly 3 hours to fully charge since the final charging stage of lithium batteries requires the current to slowly be dialed back. Thats a lot better than the USB modes 5 hours.
icedfire101 said:
It is not "picky" it follows the USB specifications.
Click to expand...
Click to collapse
I say it is picky because without hacking it will only use USB mode for most wall chargers and car chargers out there. It probably won't be any problem for a slow wall charger. But for car charger, 500ma is simply not enough if you also run GPS navigation. The phone uses more than 500ma of juice in that mode. I've to hack my car charger (a 700ma USB charger designed for iPod etc) couple times to let it reliably recognize as AC charger.
foxbat121 said:
I say it is picky because without hacking it will only use USB mode for most wall chargers and car chargers out there. It probably won't be any problem for a slow wall charger. But for car charger, 500ma is simply not enough if you also run GPS navigation. The phone uses more than 500ma of juice in that mode. I've to hack my car charger (a 700ma USB charger designed for iPod etc) couple times to let it reliably recognize as AC charger.
Click to expand...
Click to collapse
Again that is not "picky" it is doing what it is suppose to. What we really need are companies that will follow the USB standards and make Dedicated Charging Ports on there chargers. Most companies cheap out and only make 500 mA and 700 mA products (which that is why charging is so slow). Then they sell it to consumers that don't know any better. Especially with the 700 mA chargers since consumers will think that it is better because of the bigger number but devices that properly follow the USB spec will still only draw 500 mA. (I don't know what specifications Apple follows with their device but since a lot of those that I see with 700 mA are geared toward apples device they may be able to make use of them.) I know of no open specification for a USB device to pull 700 mA.
As to why the Samsung stock charger that came with the phone is 700 mA, I m guessing it is because of cost again. I can tell you though that it doesn't short the data lines with the proper X ohm resister for a Dedicated Charging Port. So I m thinking they made their own proprietary standard there just so they could save a few bucks on each charger but still give the consumer something to feel good about for buying there overpriced stuff.
I DO NOT RECOMMEND ANYONE OPENING UP ANY ELECTRONICS, EVER. ESPECIALLY ONES CONNECTED TO THE AC LINES IN YOUR HOMES. IT IS A FIRE AND ELECTROCUTION RISK AND I NOR ANYONE ELSE TAKE RESPONSIBILITY FOR YOUR OWN STUPIDITY.
Dedicated Charging Ports are required to supply 1800 mA. That means if you try and hack a device that is only rated at 700 mA to be a Dedicated Charging Port the device will possibly overheat and die or cause a fire if any device actually tries to pull the 1800 mA.
As far as car chargers: It is very simple to make a Dedicated Charging Port for a car charger provided you have an old USB one you can mod. Just get a DC-to-DC converter that will convert 11-14 volts (your car battery's voltage range) to 5 volts and throw a X ohm resistor on the USB data pins. Put it all in the empty shell of the donor and your done.

1 Amp Apple wall charger

Are all of Apple's OEM iPhone wall chargers (the white little square looking one's) rated at 1 amp? They're cheap on eBay and I like their small form factor and want to pick one up for my Captivate. Thx
I use one and they work fine.
^If you have your charger on hand, would you mind checking to see if it outputs 1Amp?
On your phone, go to Settings->About Phone->Status->Battery Status. If it says "Charging (AC)", it is charging at the max amperage the charger can offer (up to 1A). If it says "Charging (USB)", it is only charging at 500mA, the max a PC USB can offer. I'm pretty sure for iPhone/iPod chargers, it will show later case on our phone because it is not wired according to Samsung's AC charging requirement. I knew this because I had a 3rd party Car charger that was designed for iPhone/iPod and it won't let my Captivate to charge in AC charger mode. I have to open the charger and make a few mod myself to let Captivate to recognize this is an AC charger, not PC USB.
On the other hand, my 1A charger from Kodak Zi8 flash cam works w/o problem with Captivate.
foxbat121 said:
On your phone, go to Settings->About Phone->Status->Battery Status. If it says "Charging (AC)", it is charging at the max amperage the charger can offer (up to 1A). If it says "Charging (USB)", it is only charging at 500mA, the max a PC USB can offer. I'm pretty sure for iPhone/iPod chargers, it will show later case on our phone because it is not wired according to Samsung's AC charging requirement.
Click to expand...
Click to collapse
ty for the reply. I modded a usb retractable cable by shorting the middle connectors and when I go into settings it shows it's "Charging AC". This is with a generic 700mA usb wall charger I got with a cheap connector kit for my old iPhone.
Anyway, I recently got my Captivate and I find myself constantly playing with it, but it kills my battery doing so. I just want to charge my phone as quickly as possible so I can continue playing with it some more (in a good way).
I like Apple's wall charger because it's small.
From what I have read they are rated at 650 mv so fox is right that they will show as a usb connection. I have never really paid attention and am making a relatively uneducated, yet randomly tested, through my own purely subjective method of simply plugging my phone into anything that will allow my usb cord access, guess that anything with a female usb connection is fine.
Li-ion batteries are kinda dangerous so I am pretty sure there is some sort of idiot proofing built into the charging circuitry in the phone as well.
I'm pretty sure the Captivate will only draw the amps it needs so there should be no danger whether the wall charger is 1 or 2 Amps or more.
The difference is simply the charge time. The phone needs about 3 to 4 hours to get a full charge on the stock 700mA charger. When using generic USB chargers, it will be limited to 500mA max regardless what the charger is capable of and the full charge time will be proportionally longer. The bigger problem is that when your battery is really really low, 500mA may not be enough to even start the charging. That's why you need always keep the OEM charger handy for emergency.
BTW, for a car charger, 500mA won't keep your bettery from draining if you run navigation app that needs to power GPS chip, keep the screen on and download map from 3G connection at the same time. It requires 700mA or more. That is why it is very critical for a car charger be recognized by the phone as AC charger to draw more juice.
Ok, as I stated in my previous post I modded a USB cable by shorting the two middle data connectors, which tricks the Captivate into thinking it's charging with AC through my generic 700mA wall charger. It also says in settings it's "AC Charging" when I looked.
I just wanted to know if the iPhone's wall charger is rated at 1A or was it 650mA?? as newter55 stated.
thx for everyone's help.
Edit: My mistake, I thought I posted this in the Q&A section.
For some new PC motherboard with USB3.0,
they can output 900mA~1000mA(1A) in one single USB port.
You may check this out http://goo.gl/TUaef
If your PC is already 2 years old or older, the usb will only output 500mA in the max.
And, most Li-ion charger are smart enough.
In fact Li-ion charger circuit need to be well design in current control and over current/charge control.
The circuit will not pump full current to the battery in the beginning,
and it will not draw too much, so no need to worry about burn it up.
However if the current is too high let's say 10A.... it may possibly burn the circuit.
Maybe it is a bit difficult to measure current, you need to cut the wire and plug it to ampmeter....
Here is some reference.
500mA - full charge need over 3hrs
700mA - around 2hrs
1A - ~1.5 hr
johan8 said:
For some new PC motherboard with USB3.0,
they can output 900mA~1000mA(1A) in one single USB port.
You may check this out http://goo.gl/TUaef
If your PC is already 2 years old or older, the usb will only output 500mA in the max.
Click to expand...
Click to collapse
It is not about USB port side. The phone itself also detects and determines how much current it will draw. If it detects it is a PC USB, it will only draw 500mA max as Captivate is designed following USB 2.0 spec.
Ok, thanks for everyone's help. I was able to find out on my own after scouring the internet and talking to someone who has the Apple wall charger and it is indeed 1Amps. I believe all wall chargers that come with the iPhone 3g and all iPhone models after are 1Amps. Not sure about the original iPhone 2g.
Also, for curiosities sake, the iPad USB wall charger is 2Amps.
foxbat121 said:
It is not about USB port side. The phone itself also detects and determines how much current it will draw. If it detects it is a PC USB, it will only draw 500mA max as Captivate is designed following USB 2.0 spec.
Click to expand...
Click to collapse
Maybe.
I don't know the control circuit inside GalaxyS.
But USB2.0 doesn't means it is just 500mA.
iphone is just usb2.0, but it is the only thing can draw 1A from USB ?
http://goo.gl/GVqKl
(with designated m/b)
johan8 said:
Maybe.
I don't know the control circuit inside GalaxyS.
But USB2.0 doesn't means it is just 500mA.
iphone is just usb2.0, but it is the only thing can draw 1A from USB ?
http://goo.gl/GVqKl
(with designated m/b)
Click to expand...
Click to collapse
You're missing the point. The charge port on the phone can draw more than 500mA but only if it detects it is connected to a AC charger. Like mentioned above, you have to short the data PINs on the USB port or cable to let the Captivate think it is connected to AC charger. For iPhone, the data pins need to be connected to certain specific voltages in order to let iPhone know it is connected to an Apple AC charger.
When the phone can not detect AC charger characteristics, it falls back to PC USB 2.0 spec which is 500mA max.
I use one to charge my Zune. Haven't had a problem.
foxbat121 said:
You're missing the point. The charge port on the phone can draw more than 500mA but only if it detects it is connected to a AC charger. Like mentioned above, you have to short the data PINs on the USB port or cable to let the Captivate think it is connected to AC charger. For iPhone, the data pins need to be connected to certain specific voltages in order to let iPhone know it is connected to an Apple AC charger.
When the phone can not detect AC charger characteristics, it falls back to PC USB 2.0 spec which is 500mA max.
Click to expand...
Click to collapse
I fully understand what you're saying.
In iphone3, it can only draw 700mA from USB,
IP4 can draw nearly 1A from "computer" USB.
While iphone are just USB2.0 !
GalaxyS can draw 1A in max.
But does it like iphone4 can draw 1A from PC USB ? I don't know.
Or just like IP3 can draw only 500~700mA ?
I don't have new m/b and ampmeter so can't testing on it.

[Q] Working USB car charger while navigating

Since I already tried 4 USB car chargers (Osungo Carjuice 2.1A, Belkin 2.1A, Ewent 2.1A, Belkin 1A) with several USB cables (my intention is to use this cable I got from dx.com), but none of the combinations succeeded in charging my N5 while using navigation on the road.
In the settings menu -> battery all of them display Charging (AC) when plugged in my car.
During night time they keep the battery around the same level and during day time the battery percentage even slowly drops.
I'm going to perform some measurements later today with Battery Monitor Widget and/or Currentwidget to get some numbers.
The stores close-by only sell this stuff for ridiculous prices, so I spent enough money on gas already. I haven't ordered anything online yet since it seems nothing is guaranteed to work and therefore I don't want to deal with the hassle of return processes plus shipping costs.
The only car charger that does work is the charger that came with my Galaxy Nexus car holder, but I never liked that charger since it doesn't have a coiled cable so the cable is all over the place across your dash and it has no universal USB connection to charge all kind of devices in your car.
Also I'm looking for a solution which doesn't require soldering of some sort.
Does the USB car charger + coiled USB cable which I'm looking for even exist and why is it so hard to just get a working car charger for your N5?
Today I did some measurements with Currentwidget and the problem lies in the cable which I got from Dealextreme.
When I tested with the USB cable which came with the N5 all chargers work fine.
Now I hope I can find a coiled USB cable which works just like the original N5 cable for a decent price.
Found one from Mediabridge, but it seems this cable isn't available in the Netherlands and on Ebay shipping costs are insane.
Does the 1A charger still charge the phone while navigating? Or is a 2.1A charger needed?
Rhatfield25 said:
Does the 1A charger still charge the phone while navigating? Or is a 2.1A charger needed?
Click to expand...
Click to collapse
Both can charge the phone while navigating, as long as you use the right cable.
Very annoying since there is no way to tell which cable is good and which cable is not good.
This was also noticed in the following threads:
[Q] Terrible charge rate?
Need good car charger recommendations please
Discharging while using Navigation
Tried the cable which came with the HTC OEM Car Charger CC C200, together with a 2.1mAh car charger and it barely charged the N5 while navigating. The charging level went up 1% in about 25 minutes time, in comparison if you use the cable which came with the N5 the level will have gone up around 15-20%.
The Mediabridge cables (such as this one) should suffice (available on Amazon and Ebay).
Since those are not available in Europe and shipping costs are way too high, I now found an alternative from Speedlink. Hopefully this one will work just as good as the original N5 USB cable.
I am using PowerGen 2.1A car charger with 3' Samsung OEM usb cable and able to charge the phone while using Navigation, brightness at full, and streaming tune-in on LTE. Very happy with the setup.
I had a monoprice 10' usb cable, the thick version with cap on ends, the 3' samsung oeum usb cable works much better. Testing on my old phone Optimus G Pro, there are about +200mA improvement using the 3' samsung oem usb cable over the monoprice 10' usb cable. so make sure to use the shortest usb cable possible.

S5 car charger that actually charges?

Hi all,
I have a couple of micro usb car chargers and when I was using a Navigator app whilst driving somewhere my battery just died despite the charger being plugged in and showing as charging?
I bought another charger off ebay which is a usb car socket with a genuine Samsung micro usb cable. It shows as 1A output and I plugged my phone in to charge at 1% with google maps running, half an hour later it had only gone up to 2%?
What I did previously was plug the 3 pin mains charger into a 240V inverter plugged into the cigaretter lighter socket and that actually charged the phone. Any ideas why the car chargers won't charge it, does anyone know of a car charger that actually will charge the S5?
martyp78 said:
Hi all,
I have a couple of micro usb car chargers and when I was using a Navigator app whilst driving somewhere my battery just died despite the charger being plugged in and showing as charging?
I bought another charger off ebay which is a usb car socket with a genuine Samsung micro usb cable. It shows as 1A output and I plugged my phone in to charge at 1% with google maps running, half an hour later it had only gone up to 2%?
What I did previously was plug the 3 pin mains charger into a 240V inverter plugged into the cigaretter lighter socket and that actually charged the phone. Any ideas why the car chargers won't charge it, does anyone know of a car charger that actually will charge the S5?
Click to expand...
Click to collapse
buy yourself 4.8A dual usb car charger (2.4A per port).
martyp78 said:
Hi all,
I have a couple of micro usb car chargers and when I was using a Navigator app whilst driving somewhere my battery just died despite the charger being plugged in and showing as charging?
I bought another charger off ebay which is a usb car socket with a genuine Samsung micro usb cable. It shows as 1A output and I plugged my phone in to charge at 1% with google maps running, half an hour later it had only gone up to 2%?
What I did previously was plug the 3 pin mains charger into a 240V inverter plugged into the cigaretter lighter socket and that actually charged the phone. Any ideas why the car chargers won't charge it, does anyone know of a car charger that actually will charge the S5?
Click to expand...
Click to collapse
If your battery goes above the 42°C the Kernell stops charging; the consumption of the phone can be up to 700mAh, so with 1A the charge must increase in about 5% in half an hour. with a 2A charger the kernell will accept another 800mAh as much, so you can fully charge your phone in more than three hours, (whe in a fully use) but always with abattery temperature lower than 42°C
I personally use the Anker Qualcomm 2.0 car charger, no problems, I like how fast it charges even if I am heavily using it (unlike other chargers I have owned)
Excellent,thanks both. I got hold of a 2.1a charger which seems to be doing the job well at the moment. Interesting thing about the battery as I have felt it get very warm at times, not always when charging though.
I bought this [Quick Charge 2.0 Car Charger]CHOE 30W (with Most Powerful QC 2.0 Port) Dual USB Car Charger with 22AWG 3.9FT Micro USB Cable(White)
Use coupon code 88PKZDLL on checkout to save $5.45 making it only $10
actually works
I can really recommend this one: Aukey® Kfz Ladegerät 4.8A Dual Port Autoladegerät mini Car Charger, 2.4A+2.4A(4.8A max)dual Ausgänge für iPhone, iPad, Tablets, Smartphone, Navi u.a. USB-Geräte (4.8A dual Port mini Schwarz)
(Can't post the URL because of anti-spam bull****. Just search for that strink on amazon.de)
It's powerfull enough to charge a S5 and a S5 mini for example.
I have a genuine at&t 2.1 AMP car charger for my SGS5 and I never had any problems with it. It also has an extra USB port so you can charge two devices at a time (the 2 amps split to 1 amp for each device).

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