Database Users

how to enable high power usb charge

anyone knows?

possibly need to write a custom oem_misc.dll. if some one can, then we can have TV out too ...

i heard it is just a reg change

anyone knows pls?

Don't know the reg change in this case, but guess won't really work.
For instance, for enabling FM radio without headset, changing the headset state in reg won't work. I would be happy to be proven wrong though

leobox1 said:
anyone knows pls?
Click to expand...
Click to collapse
Hi leobox1,
Not sure that there is a way to enable this. Charge rate is determined by battery voltage and available current from the charger, not by software (other than the simple battery management chip in the battery). So if your battery is low and you have high power USB connection, it will take as much charge transfer as the battery will accept, provided the supply voltage can keep up. I don't think that the charger circuit can recognise the difference between low power USB, high power USB, or charger USB connection.

mike.waters said:
Hi leobox1,
Charge rate is determined by battery voltage and available current from the charger, not by software .... I don't think that the charger circuit can recognise the difference between low power USB, high power USB, or charger USB connection.
Click to expand...
Click to collapse
I don't think so. When HD is on, the current consumed at a given battery level of charge for a given (same) voltage is higher with wall charger than computer USB. Don't have the values that I measured once... But this doesn't seem to be the case when HD is switched off.
So there has to be some kind of monitoring going on by the CPU.

The charger has the two data pins connected together so the handset knows it is receiving power from the charger and not a USB port. The device will then charge with as much power as the charger will allow, up to 1000mA

The amount of USB power definately changes the speed at which this recharges. I purchased a 3amp car charger and it will charge my Touch HD in half the time it charges from the wall charger. My laptop puts out a small USB power supply and it take all day to charge my phone. My old Pocket PC had the selection for fast or slow charge, this one seems to handle it on it's own.

hmm so in short it is beyond our control?

leobox1 said:
hmm so in short it is beyond our control?
Click to expand...
Click to collapse
In short - Yes

backdoc94 said:
I purchased a 3amp car charger and it will charge my Touch HD in half the time it charges from the wall charger.
Click to expand...
Click to collapse
3 Amps? Are you sure, I don't know if I would want to connect my Touch HD to a 3A supply. Where did you buy it from?

Picked it up from ebay. It works really well, no overheating. The phone only takes what it needs, the charge is controlled by the phone not the charger.

Oh, I know the phone will only pull the power it wants, that is not the issue. A 3 amp power supply would cost quite a bit if it was a decent regulated one, and I would not use anything but a regulated power supply.
So I was guessing you were using a 3A unregulated supply. Which is something I would be very wary of, the risk of a voltage spike is going to be higher than with a lower amperage.

the only reason that the phone charges faster using the htc charger is so that people like us spend more money on official htc accessories.
its not just htc that do this.
why do you even think they have this extusb instead of a normal usb port?
a normal usb port on a pc is rated to give out 500mA (half an amp) of current.
that doesnt mean that a normal usb socket cant accept more than that though. just think back to the old htc devices that charged much faster.
wake up guys

http://www.nuerom.com/BlogEngine/
I think theres something interesting there

chrisque1 said:
http://www.nuerom.com/BlogEngine/
I think theres something interesting there
Click to expand...
Click to collapse
what is it for?

Impossible to charge sg2 in car

Hi all, just came 3 days ago from an htc hd2, and so far I am more than happy with it.
I have only one complaint and maybe you guys will help me sharing your experience : I can't charge this phone in my car while using gps.
It seems that the power adapter is not powerful enough to charge the phone screen on.
The car charger has a 5v 1000ma output, more than the regular wall charger provided by Samsung and it was working well before with my HD2 so I have no clue about this problem.
Did you experience that issue too, else can you share what car charger do you use?

try to buy new standard car charger with micro plug.. 13 eur and you will be saved..
Sent from my GT-I9100 using XDA App

Charger doesn't matter unless the phone is dropping into USB charging mode - phone limits to around 600-650 mA by default.
Custom kernels can bump this limit up for I9100 users. I777 users are screwed - we've got a crippled charger chip.

I had the same problem, I used the samsung one, useless, so I used my iPad charger, which is 2A, and charges the iPad quick, still useless. We drove from Bathurst NSW, down to Melbourne, about 10 hour drive, plugged in all the way using GPS, and about an hour from home, the connect to charger warning came on!! So once I stopped GPS, it started taking charge. Looks like when the phone is in use, it draws more then it takes charge, plus I read somewhere on here the phone is limited on the charge it takes, so using the 2A does nothing different then the stock 500mA charger.

I always had this problem with my Nexus One, although they are different phones, the problem is the same, uses more power then it can recharge in USB mode.
After trying 3 or 4 different charges I remember that I found one ultra-cheap 'made in taiwan' from a street seller that worked very well.... so it's kind of a lucky shot!
good luck!

Im using a genuine Samsung SGS2 charger and I can charge and run Sygic just fine. I started my journey with 80% and 40mins later I was up to 91% when I stopped and got out. (not in aeroplane mode..)

Very interesting feedbacks... So that confirm that is clearly not a matter of output amperage power.
It is now the same problem on the galaxy tab 10.1, for quickly charge this tab you need the Samsung compatible usb adapter.
It can be likely with a tab bringing a proprietary plug, but I didn't thought it will be the same with a Samsung phone bringing a regular micro usb plug. Quite frustrating and disappointing!
I will search around a micro plug car charger as suggested by redzion, but actually I don't clearly see the difference with my usb charger + a micro usb cable.

Double post, sorry.

If I use the usb cable from my cd player I have the same problem but if I use the official Samsung car charger Ithe only problem I have is the phone getting stupid hot
Sent from my GT-I9100 using xda premium

Oh Samsung, when you will understand?!

Samsung DOES follow the USB charging standard - it goes to its highest current setting when a charger that follows the standard is connected.
Note that iPad/iPhone chargers do NOT follow the standard - Samsungs will treat these as USB hosts and limit to 450 mA instead of 600-650.
Modified kernels can increase both of these values on I9100s.
The only thing Samsung really did **** up is counting screen/CPU current usage against the charge current limits - that's just stupid.

So the charger has smarts. On the i9000 factory chargers, the data pins were bridged. Bridging these pins manually on a USB cable when connecting to a USB source (such as a PC) enabled full current charging. You can see this in Settings -> About; it will say either USB or AC charging.
Do you think this is the case with the i9100?
I don't condone testing this theory on your i9100. Increasing the max current via custom ROM may be a safer solution.

I had the same problem. Two things fixed it for me:
1) I bought this charger: Sony Ericsson AN300 Micro USB 10€
2) I am using a custom kernel now

Any charger that is rated at 1000mA or more (per port) will do just fine. The problem is the cable - you need a quality microUSB cable, or it won't provide all the juice you need. I had the same issue, and I swapped three chargers until I found the real culprit.
Try with the charger you have now and the mUSB cable that was in the phone box - it should work well with that one.

I just press the power button to turn the screen off. when i need the sat nav i press the power and it still tracks you so there is no delay. With the screen off it does charge.

same problem

Duffman19 said:
I just press the power button to turn the screen off. when i need the sat nav i press the power and it still tracks you so there is no delay. With the screen off it does charge.
Click to expand...
Click to collapse
You are right, but even if it is better than nothing the charging time is still a big problem.
Yesterday I drove for at least 40mn phone off. Arrived to destination, I turn the device on: it charged only from 0 to 5%
I would like to test the mariusi theory concerning the Samsung micro usb cable, unfortunately on my SgsII box I just have a wall charger, no a microusb-usb cable.
Entropy512 said:
Samsung DOES follow the USB charging standard - it goes to its highest current setting when a charger that follows the standard is connected.
Click to expand...
Click to collapse
Is there a way to know before buying if the charger respect this charging standard?
I have some cheap usb chargers here and no one is a fast as the one provided by Samsung.
Entropy512 said:
The only thing Samsung really did **** up is counting screen/CPU current usage against the charge current limits - that's just stupid.
Click to expand...
Click to collapse
Maybe for safety purpose? Gps phones can become very hot behind the car glass.

Samsung are trying to "encourage" you to buy only their official accessories. To do this they've wired something differently in their chargers and cables. This "problem" exists on the Galaxy Tab too and can be solved with this adapter...
http://www.ebay.co.uk/itm/USB-car-w...ccessories&hash=item2c5c07736b#ht_3084wt_1163
It's cheap and turns a trickle charge into a full charge. I don't know the specifics of what they've done, but their USB charging just isn't the same as most others manufacturers.

Archer said:
It's cheap and turns a trickle charge into a full charge. I don't know the specifics of what they've done, but their USB charging just isn't the same as most others manufacturers.
Click to expand...
Click to collapse
Great find.

Pretty sure it just bridges the data pins.

problems charging

I'm trying to charge the fire with my htc charger but it never moves from 29% I was able to use the same htc lead to connect to my pc with no problem at all has anyone else had problems ?

shug176 said:
I'm trying to charge the fire with my htc charger but it never moves from 29% I was able to use the same htc lead to connect to my pc with no problem at all has anyone else had problems ?
Click to expand...
Click to collapse
The charger and the lead are different. The lead may work but that does not mean that the charger is compatible. Try a different charger and check the voltage on the charger because the Kindle Fire only accepts a certain voltage.
Sent from my Kindle Fire using xda premium

The stock Kindle Fire power supply is 1.8A, which will charge the Fire whilst you are using it.
If you use a USB cable, or a USB cable that connects into a power adapter, you are likely to get a lot less power (probably between 500mA and 1A) which probably won't charge the Fire whilst you are using it. When it's in standby it should charge it OK, but will probably take twice as long because of less output power via USB.

The power supply that comes with the KF is not the same as most cell phone chargers. It outputs (DC): 5V, 1.8A. This is higher than most regular cell chargers.
One I tried was 3-6V, 1.2A and it didn't charge the unit continually. The light would go out and if you watched the Device screen, you would see the Charging message go on and off with the light. So it was charging.. but barely enough.

krelvinaz said:
The power supply that comes with the KF is not the same as most cell phone chargers. It outputs (DC): 5V, 1.8A. This is higher than most regular cell chargers.
One I tried was 3-6V, 1.2A and it didn't charge the unit continually. The light would go out and if you watched the Device screen, you would see the Charging message go on and off with the light. So it was charging.. but barely enough.
Click to expand...
Click to collapse
I would agree, you're going to need 1.8A to use it AND charge it at the same time. However, on standby it does charge OK with less Amps. That might not be the case if you've hacked the Wifi to "Always On". I might play around with it to see I can confirm either way.

Phone stops charging

My S4 has developed a problem where it seems to stop charging overnight, leaving me with a low battery in the morning. When I plug it into the charger the red light comes on, but when I return in the morning it has stopped charging and the battery has lost 20% of its charge.
A different USB cable, plugged into the same charger, seems to be charging it for now. Does this mean that the original cable is faulty, or do I need to get the USB connector on the phone checked out?

itm said:
My S4 has developed a problem where it seems to stop charging overnight, leaving me with a low battery in the morning. When I plug it into the charger the red light comes on, but when I return in the morning it has stopped charging and the battery has lost 20% of its charge.
A different USB cable, plugged into the same charger, seems to be charging it for now. Does this mean that the original cable is faulty, or do I need to get the USB connector on the phone checked out?
Click to expand...
Click to collapse
Maybe there is overheating problem so phone stops charging process. Try to start charging and observe it. When it stops charging again, check if it is hot.

Diamond 2 owner said:
Maybe there is overheating problem so phone stops charging process. Try to start charging and observe it. When it stops charging again, check if it is hot.
Click to expand...
Click to collapse
Seems to be, i've noticed this myself too on days my room is very hot. Ever since i've undervolted a little it hasn't happened again.
Sent from my GT-I9505 using xda app-developers app

Kenablo said:
Seems to be, i've noticed this myself too on days my room is very hot. Ever since i've undervolted a little it hasn't happened again.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
First make sure that phone is placed on clean, flat surface with good air flow. Worst case is placing it on bed, blanket or pillow - it will overheat for sure.
Undervolting will not help a lot, as it only affect CPU/GPU heating, while they are usually idling during charging. Main source of heat in that situation is not a CPU/GPU but charging itself.
If you have really high room temperature, and you can do nothing about it, than you can slow down charging process, so it will decrease charging heating. Just use regular USB port (computer or generic USB charger) instead dedicated Samsung S4 charger. Charging current will be decreased from 1.9A to 500mA.
If you want to have more control over charging and temperatures you could install Battery Monitor Widget Pro (https://play.google.com/store/apps/details?id=ccc71.bmw.pro). See example of data which you can got with on wireless charging thread: http://forum.xda-developers.com/showpost.php?p=43224425&postcount=1018
My battery temperature goes up to 35C during charging (wireless charging).

The theory re. heat is interesting, but doesn't seem to explain why switching USB cables fixed the problem immediately in this case. Is the S4 particularly sensitive to the fit of the USB cable in the socket??

itm said:
The theory re. heat is interesting, but doesn't seem to explain why switching USB cables fixed the problem immediately in this case. Is the S4 particularly sensitive to the fit of the USB cable in the socket??
Click to expand...
Click to collapse
No, S4 is not particularly sensitive to the fit of the USB cable in the socket.
Keep in mind, that max charging current on S4 is based on detection routine which tries to figure it out what is phone connected to (is it regular USB port specified for up to 500mA or dedicated 2 amps charger). It is necessary to accomplish down compatibility with generic USB hosts (you can connect S4 to every USB device) and fast charging feature (less then 2h charging time).
So, you can say, that S4 is sensitive to USB cable/device type. Switching from dedicated cable/charger to 3rd party, could decrease charging current and generated heat.
I hope, this theory explains all your doubts

Diamond 2 owner said:
No, S4 is not particularly sensitive to the fit of the USB cable in the socket.
Keep in mind, that max charging current on S4 is based on detection routine which tries to figure it out what is phone connected to (is it regular USB port specified for up to 500mA or dedicated 2 amps charger). It is necessary to accomplish down compatibility with generic USB hosts (you can connect S4 to every USB device) and fast charging feature (less then 2h charging time).
So, you can say, that S4 is sensitive to USB cable/device type. Switching from dedicated cable/charger to 3rd party, could decrease charging current and generated heat.
I hope, this theory explains all your doubts
Click to expand...
Click to collapse
Thanks for the explanation - it certainly does help. It looks as if the flaw may be with the detection routine, which was preventing it from charging when connected to the stock charger/stock cable, but was happy to allow it when using a different cable with the stock charger.
It also explains another anomaly - when using the S4 as a Sat Nav in the car with a TomTom High-Speed multi charger the phone will only charge if the screen is turned off. With the screen on it actually loses charge.
Is there any way to "hack" this logic to eradicate these anomalies and ensure that the phone charges when you want it to? Or could it be that there is actually a fault with my phone that needs to be checked out?

I suspect this may not be normal...I've just plugged the phone into the stock charger/cable. The phone/battery are not remotely warm, but the phone isn't charging, even though the battery icon in the notification bar says that it is (there's a lightning bolt in the battery icon but it just lost 1% charge in 2 mins with the screen turned off).
The LED went red when I first plugged it in, but the red light went out after a minute, although the lightning bolt remained in the battery icon in the notification bar.
???

itm said:
I suspect this may not be normal...I've just plugged the phone into the stock charger/cable. The phone/battery are not remotely warm, but the phone isn't charging, even though the battery icon in the notification bar says that it is (there's a lightning bolt in the battery icon but it just lost 1% charge in 2 mins with the screen turned off).
The LED went red when I first plugged it in, but the red light went out after a minute, although the lightning bolt remained in the battery icon in the notification bar.
???
Click to expand...
Click to collapse
At this point it sounds like you have a defective battery/phone Anyway, here's a sample test you can try:
Get this app: Galaxy Charging Current Lite
With the stock charger/cable you should be seeing (remember to keep refreshing):
- Not charging - -
- Screen on - 1200 mA
- Screen off - 1900 mA
(yes, there's a difference in the charging current depending on whether the screen is off or on)
Plugged to a standard USB port: 460 mA
Plugged to a car charger - depends on the output of the charger - most car chargers are 1A these days
Try with different cables plugged into a PC USB port - you should be getting a constant 460 mA charge. If it stops as described and you tried a few cable it's likely the battery/phone. HTH

Breach1337 said:
At this point it sounds like you have a defective battery/phone Anyway, here's a sample test you can try:
Get this app: Galaxy Charging Current Lite
With the stock charger/cable you should be seeing (remember to keep refreshing):
- Not charging - -
- Screen on - 1200 mA
- Screen off - 1900 mA
(yes, there's a difference in the charging current depending on whether the screen is off or on)
Plugged to a standard USB port: 460 mA
Plugged to a car charger - depends on the output of the charger - most car chargers are 1A these days
Try with different cables plugged into a PC USB port - you should be getting a constant 460 mA charge. If it stops as described and you tried a few cable it's likely the battery/phone. HTH
Click to expand...
Click to collapse
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?

itm said:
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?
Click to expand...
Click to collapse
I just tried a few different USB cables with the stock charger - these gave me interesting results:
- Cable 1 : 1200
- Cable 2: 1200
- Cable 3: 420
So maybe it's the stock cable that's the problem?

itm said:
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?
Click to expand...
Click to collapse
Actually it looks like more of a problem with your stock charger (as you're getting normal charge from a USB port)!
- Are you using the same cable with your stock charger, when connected to the PC USB port and your car charger? Try a different cable in all this scenarios to rule out the cable as a factor.
- What I'd recommend is to find another stock charger - go to a Samsung shop / service center - ask to test on site and see what input your phone is getting. You may test with any other mains charger but as you need to be sure of the power it delivers I'd test with an official Samsung 2A charger. If you don't get 1200/1900 with another official charger (and a working cable) then it's an issue with the phone/battery.
Re your car charger. It's possible that your car charger is 500 ma only (check the writing) if it's 0.5 A you need a new one (get a 2A one). Is it a real 12V cigarette charger or are you plugging the cable in a USB port on your car?
---------- Post added at 12:15 PM ---------- Previous post was at 12:11 PM ----------
itm said:
I just tried a few different USB cables with the stock charger - these gave me interesting results:
- Cable 1 : 1200
- Cable 2: 1200
- Cable 3: 420
So maybe it's the stock cable that's the problem?
Click to expand...
Click to collapse
There you go I fried two old cables already so not all of them can sustain the 2A charge. Use Cable 1 or 2. Make sure it also charges at 1900 ma - plug it in, open the app, refresh so that it shows 1200 ma. Turn the screen off. Give it 5 seconds (red led should turn on). Turn the screen back on. immediately refresh - you should see 1900.

I'm getting 1200/1900 from the stock charger if I use "Cable 1" or "Cable 2" as referred to above, so I guess that indicates that the charger is OK? (the stock cable only gives 300 from the same charger)
I'm surprised that I can only get 500 from the car charger using Cable 1/2, as it is advertised as having a 2amp port. In fact I get a higher charge rate (740) using the "slower" port on the TomTom charger - i.e. the port labelled "high-speed" actually delivers less current.
???

Yes cable 3 has gone bad. You should be good with the others.
Re the car charger - is 500 all you get with cable 1 or 2? Is the charger rated 2A for Android phones? Note that some high current chargers are high current only for Apple products and default to much lower output with non Apple products. It can also be a bad charger.- I had a defective 2A Anker car charger which wouldn't charge above 760. I RMAed it and the replacement works as intended.
Sent from my GT-I9505 using xda app-developers app

Breach1337 said:
Yes cable 3 has gone bad. You should be good with the others.
Re the car charger - is 500 all you get with cable 1 or 2? Is the charger rated 2A for Android phones? Note that some high current chargers are high current only for Apple products and default to much lower output with non Apple products. It can also be a bad charger.- I had a defective 2A Anker car charger which wouldn't charge above 760. I RMAed it and the replacement works as intended.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
I can get 1200 from the car charger with Cable 1. It's rated at 2A for TomTom devices.
Now this is bizzarre...I just took delivery of a brand new Nexus 10 and immediately tried the charger and cable from that with the Galaxy S4 - I only got 300ma. Can this really be coincidence??

Yes, weird. What about the the other way around - not sure whether the app will work on the Nexus but you can try. Try the S4 charger and cable with the Nexus.
Sent from my GT-I9505 using xda app-developers app

Breach1337 said:
Yes, weird. What about the the other way around - not sure whether the app will work on the Nexus but you can try. Try the S4 charger and cable with the Nexus.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
The Galaxy Charging Current App doesn't work on the Nexus 10 for some reason - it doesn't respond to a charger being connected to it
Can Samsung really be shipping dodgy cables on a mass scale?

itm said:
The Galaxy Charging Current App doesn't work on the Nexus 10 for some reason - it doesn't respond to a charger being connected to it
Can Samsung really be shipping dodgy cables on a mass scale?
Click to expand...
Click to collapse
I doubt it. No surprises that the app doesn't work on non-Galaxy devices.
By the way how did you try the cable from the Nexus? Isn't is a pogo cable (the wider one)?

Breach1337 said:
By the way how did you try the cable from the Nexus? Isn't is a pogo cable (the wider one)?
Click to expand...
Click to collapse
No it's a standard Micro USB.

itm said:
No it's a standard Micro USB.
Click to expand...
Click to collapse
If you get the same low charge rate with the Nexus charger/cable I'd take it to Samsung and show them the charge rate you're getting. Even if it works with another cable something is definitely not right - let them figure it out.

Charging problems

I just got my Note 3 working thanks to this group. When I first got it, it was without a battery and was locked by PIN. I was able to wipe it to factory conditions, but now it will not charge. It charged right away when I first got a replacement (OEM) battery, but then, I did the system factory reset, and now it will not charge. I am using a USB 3.0 cable and connecting this to my Apple charger I got with my iPhone 6 as I don't have a specific charger that might have come with the Note 3...just a generic USB 3.0 cable and the iPhone 6 charger that the USB cable plugs into. Any thoughts for me to try?

Try plugging the cable into a computer. It might not charge fast but it will let u know if it will charge or not. Iphone charger might not be compatible so battery will not charge.
If I helped Hit the Thanks Button Like This?

S2_brickmaker said:
Try plugging the cable into a computer. It might not charge fast but it will let u know if it will charge or not. Iphone charger might not be compatible so battery will not charge.
If I helped Hit the Thanks Button Like This
Click to expand...
Click to collapse
I have tried using the computer and that is part of my confusion...the phone will indicate it is charging...but it doesn't. I get the same indication whether I am using the computer with USB 3.0 cable, or using various wall charger pods with the same cable. It will show the charging symbol (lightning bolt) or, if turned off, but plugged in, it will show the upflowing green drops rising toward the battery. So, it seems to indicate it is charging, but the charge percentage never increases...only drops.

AUsome360 said:
I have tried using the computer and that is part of my confusion...the phone will indicate it is charging...but it doesn't. I get the same indication whether I am using the computer with USB 3.0 cable, or using various wall charger pods with the same cable. It will show the charging symbol (lightning bolt) or, if turned off, but plugged in, it will show the upflowing green drops rising toward the battery. So, it seems to indicate it is charging, but the charge percentage never increases...only drops.
Click to expand...
Click to collapse
It's not unheard of for a brand new battery to be defective. If you know someone else with a Note 3...try swapping batteries with then and see if the problem moves with the battery.
There is nothing in a factory refresh that would effect the charging circuit.
Sent from my Note 3 via Tapatalk