I have a samsung galaxy captivate phone with a charging block that accepts usb and is rated 5.0 volt and .7 amp. I also have a samsung galaxy tab 10.1 with a charging block that accepts usb that is rated 5.0 volts and 2 amps. Can I charge my galaxy phone with the galaxy tab charging block so I only need to carry one block. Will I "fry" the phone because the block outputs higher amps? Thank you.
snobosh said:
I have a samsung galaxy captivate phone with a charging block that accepts usb and is rated 5.0 volt and .7 amp. I also have a samsung galaxy tab 10.1 with a charging block that accepts usb that is rated 5.0 volts and 2 amps. Can I charge my galaxy phone with the galaxy tab charging block so I only need to carry one block. Will I "fry" the phone because the block outputs higher amps? Thank you.
Click to expand...
Click to collapse
I don't know about "frying" the phone. But it will get rather warm, for sure. It's a huge %-age increase in the amps. Even though I'm not an electrician, I wouldnt do it to my own phone.
"The battery has a resistance. So any current through the battery will have some dispersion as heat. As you drive the current up higher, you're going to be generating more and more heat, raising the temperature of the battery. At some point, chemicals and materials in the battery will break down from the heat and decompose. So that will damage the system." - Random google answer
The kernel in your phone has a limit as to how many amps the phone can draw. You could have a 400 amp charger and it would be no different. Chargers don't push amps, devices draw them. So, to answer your question, as a trained electrician, no, assuming that your phone's kernel is programmed correctly, it will not hurt your phone.
Sent from my GT-I9100
Electroz said:
The kernel in your phone has a limit as to how many amps the phone can draw. You could have a 400 amp charger and it would be no different. Chargers don't push amps, devices draw them. So, to answer your question, as a trained electrician, no, assuming that your phone's kernel is programmed correctly, it will not hurt your phone.
Sent from my GT-I9100
Click to expand...
Click to collapse
fancy that, you learn something everyday, thanks bro!
Related
I notice that the standard AC/Charger is 0.7A output. Possible to use another AC/Charger rated at 1.0A output? What is the USB output anyways? Thanks in advance for any help or suggestions.
PS Still considering rooting or not (will it void my warranty?) *WUSS*
I am using my Galaxy Tab 2.5A charger to charge the S2. It still takes about the same amt of time to charge up full.
I believe the charger current rating is the max current it can supply. The S2 will still draw current at it's own max...maybe 0.7A.
Doesn't matter what charger you use on it, if it's greater than 0.7A The S2 will limit itself to 0.7A.
if you want raise charging amperage, you can help me looking for someone, who will change(raise) it in kernel...
http://forum.xda-developers.com/showthread.php?t=1132649
Given the same voltage (i.e 5V for USB), it's the resistance of the phone that determines how much current is drawn from the charger. Therefore anything above the rated 0.7A would work fine and dandy.
Thanks to all the fellas that responded! More than enough information provided.
Sent from my GT-I9100 using XDA App
The standard for usb is 500mA/5v and this is what you get out of most computers, usb hubs and so on. AC to usb chargers will also run at that more often than not. AC chargers on the other hand usually run hotter, up to 1A and more. I have a 1A and a 1.5 amp and both charge this phone at exactly the same rate. It was not so with my N1 where the 1.5 was quite a bit faster, certainly appears like there is throttling going on as others stated. I would be curious why they did this when some other ODMs are selling phones with 1A and higher rated chargers.
look in the source code, wall charging is capped at 650 mA and USB is capped at 450 mA. and this makes sense why samsung included a 0.7 Amp charger.
Hi,
I've read some threads here about charging the S3, but not all is clear to me. I would appreciate some explanation:
1) I've read that the stock chargers output 1A. However, on the charger I got with my S3 it's written "output: 5V 0.7A". So do you think I somehow got a wrong charger?
2) I want to buy a car charger for the S3. There are many generic car chargers in ebay, some of then output 2A current. What is the maximum current allowed for the S3? I couldn't find this number in my S3 manual or on the phone itself. Will a charger of 2A cause harm to my phone? or to the battery? or to both?
Thanks in advance!
bump... does anyone know?
My charger output states .05v=1.0a.
As for what aftermarket charger to buy, I would stay away from chargers with more output than the official for 'peace of mind that my charger's specifications are the same as the official charger that came with the phone' reasons.
Cheers
Generally wall chargers output 1000mA (1A) and USB ports 500mA (0.5A)
You do not want to purchase anything that goes above 1000mA
Sent from my GT-I9300 using Tapatalk 2
I attach a picture of the adapter I got with my S3.
It says 0.7A on it, while it appears that other have one with 1A.
Did they con me with this adapter?
And regarding the maximum current allowed: do you think an adapter of 1.2A might harm the S3?
Do not know where your S3 come from but this charger is not made For S3 but for S2!
I just checked the model number:
S3 charger: ETAOU81EBE
S2 charger: ETAOU10EBE (like yours)
And there is no cable on the S3 charger, it use the USB cable
Thank you for this!
I don't get it. The charger was inside the S3 box and looked original. Damn!
I think the store I bought from import their S3 from Germany, since it came with Vodafone German stock ROM. Is it possible that this is the charger they sell on German vodafon? Or perhaps the store switched it for some reason?
Mine also come from my carrier: french vodafone
Was your S3 box sealed?
Those words, "teg listrik" and "frekuensi" is written in Indonesian
Sent from my GT-P1000 using xda app-developers app
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
So, according to what you say, there should be not problem to use a 5V 2A charger on the S3?
The charger cannot accidentally push too much current to the device?
No. The phone limits the Amp the battery can get.
It simply won't go above 0.5 or 1Amp depending on what resistor is coded between the data pins (the 2 middle pins on the normal USB-plug)
(Note that this does not extend to all devices. E.g. cheap chinese toys and their batteries may not have any current limter, connecting them to "too powerful" chargers will result in damages or potential blow-up of the battery. The same applies to batteries without any electronic such as car batteries which can overheat and "cook")
I bought S3 in Germany 1.0A, there is a date on the charger:18.05.2012
Matching charger to phone
burmo said:
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
Click to expand...
Click to collapse
Hi burmo,
An interesting concept. I have no clue in these things but what you say is not clear to me "all the way".
Charging my i93100 phone with 5.0V 3.1A will do no harm because it won't "push" more than 1A anyway?
And who is "responsible" for controlling this "push" the charger/battery/phone?
Does it work the same for Car chargers?
Thanks a lot,
Izik
multimeter check on .7amp charger
Animor said:
I attach a picture of the adapter I got with my S3.
It says 0.7A on it, while it appears that other have one with 1A.
Did they con me with this adapter?
And regarding the maximum current allowed: do you think an adapter of 1.2A might harm the S3?
Click to expand...
Click to collapse
so i have been wondering about this as well because i am currently building a custom charger for my s3 that charges the battery without having to plug into the charging port. i have redirected wires from the wireless charging port to metal tabs i have place on the back of my phone. it is a "drop in charger".
Anyway i have tested the charger that came with my phone. I also have the samsung stock charger that say the output is .7amp but after testing it with mutimeter, i have found that the output is actually 1.2 amps. As for max charging amps, I am not sure. I have tested several chargers. The new S4 charger puts out 2.34amps and i have not found any problem charging my s3 with it.
TrollTollKarl said:
so i have been wondering about this as well because i am currently building a custom charger for my s3 that charges the battery without having to plug into the charging port. i have redirected wires from the wireless charging port to metal tabs i have place on the back of my phone. it is a "drop in charger".
Anyway i have tested the charger that came with my phone. I also have the samsung stock charger that say the output is .7amp but after testing it with mutimeter, i have found that the output is actually 1.2 amps. As for max charging amps, I am not sure. I have tested several chargers. The new S4 charger puts out 2.34amps and i have not found any problem charging my s3 with it.
Click to expand...
Click to collapse
As far as I know the phone limits it so as you've found yes you will be fine
My original S3 charger is 5v 1.0amp
My original S3 charger is 5v 1.0amp. It was bought in Thailand with the phone.
I agree with burmo an advanced phone will have a current limiter as part of its circuit, however I prefer not to rely on it and not to exceed the manufacturer volt/amp recommendation.
The phone controls the current. In custom kernels (Boeffla and so on) you can change the target current. The phone has a protection built in, if the voltage is unstable (drops to much) it lowers the current untill the voltage is stable.
A HTC One charger I sometimes use (0,7A rated) only delivers 0,8A. A aftermarket charger I own (1,0A rated) is fine delivering 1,2A (modified target current, not stock). These charging currents can be read by various apps.
Get yourself a 1,0A rated charger and speed up your charging time.
Benjamin
burmo said:
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
Click to expand...
Click to collapse
Seconded the post above being an electronic engineer as wel.
Voltage should be exactly the same as you need, but this will always be the case for a USB charger.
Current should just be enough or more.
The charging current is dictated my your phone and not - and I repeat - NOT by your charger!
mine rates at 1A
Wondering if anyone has tried it? I remember reading that the wall charger from my Tab 10.1 was more powerful than for the phones because it would take FOREVER to charge. Wonder if it's compatible with our S3?
Anyone?
I believe that anything that charges on USB is just getting 5 vt, so any charger would work with any phone/tab if it is charging through USB. I would guess that the wall chargers are also putting out 5vt and would therefor be fine with any mini USB plug charging device.
Easy to check, plug it in and see how it works. (Buy insurance first )
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
Sent from my SPH-L710 using xda premium
gyrra said:
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
An hour, eh? Nice. I thought it would charge faster but not that fast.
And im definitely talking about the using an outlet, not usb.
Thanks for the confirmation!
No problem,
I knew you meant the AC charger, and that's why I posted. USB charging is slow until someone adds in the fastcharge ability to a kernel for our s3's
Glad I could be of help.
Sent from my SPH-L710 using xda premium
Gave you your first thanks!
if this helps i used a blackberry charger and it worked.. i have had no issues.
(DEL)
lostsoul565 said:
if this helps i used a blackberry charger and it worked.. i have had no issues.
Click to expand...
Click to collapse
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
tony yayo said:
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
Click to expand...
Click to collapse
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
crabapples said:
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
Click to expand...
Click to collapse
Basically youre saying the phone itself wont pull in anymore draw than it knows it can handle. So I guess if it does charge faster than great. Long as it dont fry im happy!
Can the charger bundled with the Galaxy S4 'fast charge' other phones, or is it something to do with the phones/batteries themselves that allow the quick charging? I heard that the charger charges at 2amp as opposed to 1amp like most chargers. I dont want to explode someones phone battery because it cant handle being charged that fast, lol
shanimal92 said:
Can the charger bundled with the Galaxy S4 'fast charge' other phones, or is it something to do with the phones/batteries themselves that allow the quick charging? I heard that the charger charges at 2amp as opposed to 1amp like most chargers. I dont want to explode someones phone battery because it cant handle being charged that fast, lol
Click to expand...
Click to collapse
im using an aftermarket car charger with a random micro usb and it charges just as fast...i think its the phone/battery that allows fast charging
Using a 2A charger on an older phone won't hurt the phone. The phone will only draw 1A or however much current it's setup for, even if the charger is capable of delivering more.
Other devices will pull the full 2A from the charger if they can detect that the charger is of the right type to deliver it. Different chargers tell the device that in different ways. Apparently, Apple tablet chargers put a certain voltage across the data pins. Samsung high current chargers supposedly put a different voltage across the data pins. That is how the phone or tablet can tell what kind of charger it's connected to, so they will know whether to pull 2A, 1A, or 500mA (or whatever).
Hello all,
I have a really stupid question but it's keeping me awake...
The DashCharge charger, can I use it with other devices? Like a MP3 player? Or another phone? Or is it purely and uniquely proprietary for the OnePlus phones and it might damage the other devices I would use it with?
I know it won't charge faster the devices or... But if I can plug anything with it, then I can drop the other chargers I have and keep only the DC in my bag
Thanx for your replies
Dash power chargers work at 5 Volts 4 Amps which translates to 20 Watts, if I'm not mistaken, Qualcomm's Quick Charge 3.0 works at 6.5 Volts on 3 Amps which means 19.5 Watts of power. The difference in Volts and amps between different chargers is not an issue for most devices for two main reasons.
1. Amperage is pulled by the device, which means that if you have a charger with a 4 Amp capacity, you can pretty much charge any device that draws up to 4 Amps, since no phone that I know of besides the 1+5 and 1+3(t) draws that much, you'll be fine.
2. On the voltage side, most phone chargers (apart from Qualcomm's Quick Charge) usually work at 5 Volts, the same as 1+ Dash chargers. And even if the Voltage rating on the charger is higher than the phone. These type of devices have safety features that reduce the output if they don't recognize the device being charged as compatible with their technology.
So for a quick recap, if the phone you're charging is not compatible with the technology of the charger (1+ Dash, Qualcomm QC for example) the charger will make sure to reduce the amount of power being fed to the device to a safe amount. So normally a non Dash compatible phone will probably charge at no more than 5V 2 or 2.4A.
Thanx a lot for your answer
So I can plug to my DashChargers my MP3 players and lent them sometimes to my colleagues to charge their phones as well, with nothing to worry about. It's good to know
LeKeiser said:
Thanx a lot for your answer
So I can plug to my DashChargers my MP3 players and lent them sometimes to my colleagues to charge their phones as well, with nothing to worry about. It's good to know
Click to expand...
Click to collapse
Yup, it just won't charge at full speed as it would with 1+ devices
You can use it with any device you like, but only OnePlus devices get the fast charge advantage!
Had anyone tried usb c power delivery charge yet?
I've got one for my cheap vernee which works well, in theory it requires negotiation to draw the correct power, but wondered if anyone has tested one yet
and oppo