[Q] OTG and Charging - Nexus 5 Q&A, Help & Troubleshooting

I recently got a Nexus 5 to replace my old Nexus S and really like it. I am having one challenge that I was hoping for help on:
I have got OTG working with stickmount fine, but I am trying to use this Y-cable to charge while using it and I can't get the phone to charge from the cable at all (with or without a USB drive connected). I have been able to get other, non-Nexus's to charge from the cable so it isn't the cable that is the problem.
I am rooted but running a stock kernel and rom - any ideas why it might not be working or if there is a custom kernel that has enabled the capability otherwise disabled in the phone?

Probably you need a modified Kernel like Nexus 7
avalpert said:
I recently got a Nexus 5 to replace my old Nexus S and really like it. I am having one challenge that I was hoping for help on:
I have got OTG working with stickmount fine, but I am trying to use this Y-cable to charge while using it and I can't get the phone to charge from the cable at all (with or without a USB drive connected). I have been able to get other, non-Nexus's to charge from the cable so it isn't the cable that is the problem.
I am rooted but running a stock kernel and rom - any ideas why it might not be working or if there is a custom kernel that has enabled the capability otherwise disabled in the phone?
Click to expand...
Click to collapse
You need a modified Kernel something like the following Kernel. But at the moment it is only available for Nexus 7.
http://mehrvarz.github.io/usb-host-mode-power-management-nexus7/

I'm interested in this too

wicpp said:
You need a modified Kernel something like the following Kernel. But at the moment it is only available for Nexus 7.
http://mehrvarz.github.io/usb-host-mode-power-management-nexus7/
Click to expand...
Click to collapse
I had OTG charging on my Galaxy Nexus as well as the N7. I just tried it too on my N5 with Elemental X kernel, no go. That's odd no one has come out with this feature yet if that's the case as I'm sure it's very sought after especially with people who have the 16gb model like myself that hook up to external hard drives to save space on the phone but they need external power.

Otg + Charging is also very useful when you are playing games using GamePad
t1.8matt said:
I had OTG charging on my Galaxy Nexus as well as the N7. I just tried it too on my N5 with Elemental X kernel, no go. That's odd no one has come out with this feature yet if that's the case as I'm sure it's very sought after especially with people who have the 16gb model like myself that hook up to external hard drives to save space on the phone but they need external power.
Click to expand...
Click to collapse
If you are using a USB Connection Game Pad via OTG, graphics heavy games use too much battery and usually you can not play for long. This also increases the importance of such kernel for Nexus 5 as well. Nexus 5 have smaller battery but it can play decent Graphics.
I do not like Game Pads with Bluetooth connectivity as they have control latency or lag and your moves are not as quick as even the touch screen, where as you use Game Pads to improve your control moves and probably make them better than touch screen.

wicpp said:
If you are using a USB Connection Game Pad via OTG, graphics heavy games use too much battery and usually you can not play for long. This also increases the importance of such kernel for Nexus 5 as well. Nexus 5 have smaller battery but it can play decent Graphics.
I do not like Game Pads with Bluetooth connectivity as they have control latency or lag and your moves are not as quick as even the touch screen, where as you use Game Pads to improve your control moves and probably make them better than touch screen.
Click to expand...
Click to collapse
The PS sixaxis controller worked great on my N7 for a while, no lag in gameplay. Until Asus had to fix it then I could never get it to work properly again.

I think Nexus 5 USB Port is 5 Pin
t1.8matt said:
The PS sixaxis controller worked great on my N7 for a while, no lag in gameplay. Until Asus had to fix it then I could never get it to work properly again.
Click to expand...
Click to collapse
I think that Nexus 5 USB Port is 5 Pin and not 11 pin like Galaxy S4 or Galaxy S3. Can someone please confirm this?
If this is the case will be still be able to Charger Phone and do OTG concurrently or simultaneously ?

Yes but I believe it's something that has to be addressed at the kernel level.
I use a powered USB hub and even though the phone doesn't show any charging animations, going into the battery info screen shows it is charging (though it doesn't say usb or ac, just charging)
from what I have seen it's even less than trickle charge.
USB flash drive mounted.
Screen off
Battery goes up about 1% every 10-15 minutes.
So clearly current is being passed from the hub to the phone. Just not a lot
Sent from my Nexus 5 using xda app-developers app

Can we use QI Wireless Charging along OTG
Alex240188 said:
Yes but I believe it's something that has to be addressed at the kernel level.
I use a powered USB hub and even though the phone doesn't show any charging animations, going into the battery info screen shows it is charging (though it doesn't say usb or ac, just charging)
from what I have seen it's even less than trickle charge.
USB flash drive mounted.
Screen off
Battery goes up about 1% every 10-15 minutes.
So clearly current is being passed from the hub to the phone. Just not a lot
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
I am not sure but can we use QI Wireless charging along OTG. I have read somewhere that it charges but there is a bug in Kernel due to which it does not know that battery is being charged there is no animation or text to show that battery is being charged. Another concern is that if OS does not know about charging and battery is being charged is it not dangerous can it not overcharge and below the battery etc.?

Alex240188 said:
Battery goes up about 1% every 10-15 minutes.
Click to expand...
Click to collapse
I use exactly the same Y-cable from amazon as avalpert. I connect my USB 2.5" harddisk first at the Nexus charger and let it spin up. Then i connect the OTG cable to my Nexus 5 (rooted stock ROM & stock kernel). The battery icon in the status bar has no charging animation but in settings it says its charging. Around 1% in 5-10min. Even if the screen is on.
@ avalpert: U could check the current of your usb drive in the manufacturer's datasheet and subtract this from the current, your charger is able to provide. My Nexus 5 charger can output max. 1.2A at 5V. Maybe you're using another model and there is just little current left to charge as Alex remarked.

But the difference is I was only powering a flash drive which uses next to no power. And still only 1% every 10-15 minutes.
My best guess is that because otg is enabled. The kernel is not able to tell what type of charging type (ac or USB) is connected so it just enables trickle charge as not to cause any problems
Sent from my Nexus 5 using xda app-developers app

Alex240188 said:
Yes but I believe it's something that has to be addressed at the kernel level.
I use a powered USB hub and even though the phone doesn't show any charging animations, going into the battery info screen shows it is charging (though it doesn't say usb or ac, just charging)
from what I have seen it's even less than trickle charge.
USB flash drive mounted.
Screen off
Battery goes up about 1% every 10-15 minutes.
So clearly current is being passed from the hub to the phone. Just not a lot
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
I can confirm this, I use a powered 7 port USB 2.0 hub, and with the original PS: no charging.
Now I took another PS that puts out 2.14-1.7A @ 6-7.5 VDC, and hey presto, charging the phone!
No indicator in the status bar (top screen), but when checking the battery status it clearly states "CHARGING" (see picture OPLADEN 95%)!!
And it charges pretty fast too.....
The mouse is working, as wel as the USB stick is recognized and working!!
The ONLY worry is about the charge....... is 6-7.5 V a battery killer? :fingers-crossed:
Anyone?

Used Voltage and Current Rating details of Power Supply?
dirkzelf said:
I can confirm this, I use a powered 7 port USB 2.0 hub, and with the original PS: no charging.
Now I took another PS that puts out 2.14-1.7A @ 6-7.5 VDC, and hey presto, charging the phone!
No indicator in the status bar (top screen), but when checking the battery status it clearly states "CHARGING" (see picture OPLADEN 95%)!!
And it charges pretty fast too.....
The mouse is working, as wel as the USB stick is recognized and working!!
The ONLY worry is about the charge....... is 6-7.5 V a battery killer? :fingers-crossed:
Anyone?
Click to expand...
Click to collapse
Can you please show the power supply that you are using in the picture? What is the exact voltage you are using 6V or 75.V? And exact current 21.4A or 1.7A?

wicpp said:
Can you please show the power supply that you are using in the picture? What is the exact voltage you are using 6V or 75.V? And exact current 21.4A or 1.7A?
Click to expand...
Click to collapse
I found the rating strange myself as wel, but it is exactly as I mentioned, but since I didn't trust it up ahead, I just went to my basement to see if I had something better, and I found a 5V 2A.
That should be OK, right?

Can you tell the result of using 5V 2A Power Supply.
dirkzelf said:
I found the rating strange myself as wel, but it is exactly as I mentioned, but since I didn't trust it up ahead, I just went to my basement to see if I had something better, and I found a 5V 2A.
That should be OK, right?
Click to expand...
Click to collapse
Yes 5V 2A seems write but I still can not give you any guarantee it might blow your device so do it at your own risk
If you can do this, then please tell how the charging speed is going along OTG use on 5V 2A?

wicpp said:
Yes 5V 2A seems write but I still can not give you any guarantee it might blow your device so do it at your own risk
If you can do this, then please tell how the charging speed is going along OTG use on 5V 2A?
Click to expand...
Click to collapse
Here are the pictures of the PS specs. Hope it clears your question? Pls let me know.

it may be interesting to read this forum / info on 2A charging of the nexus 5...... :
http://forums.androidcentral.com/google-nexus-5/331746-2a-charger-nexus-5-a.html

wicpp said:
Yes 5V 2A seems write but I still can not give you any guarantee it might blow your device so do it at your own risk
If you can do this, then please tell how the charging speed is going along OTG use on 5V 2A?
Click to expand...
Click to collapse
Alright, from 84% tot 97% in 90 minutes.....
That is connected with micro usb otg cable to powered (5vdc 2a) USB hub and with the screen on.
Sent from my Nexus 5 using xda app-developers app

May be we can use fix Voltage and AMP output adapter
dirkzelf said:
Alright, from 84% tot 97% in 90 minutes.....
That is connected with micro usb otg cable to powered (5vdc 2a) USB hub and with the screen on.
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
May be we can use fixed output voltage and amp adapter just like the following
http://www.amazon.co.uk/2000mah-Ada...ds=5V+2A+2000ma+AC+Power+Adapter+Wall+Charger
I know it is up to the device (Nexus 5) that how much load it will put on the adapter to consumer out of 2000ma or 2A. On the other hand I have read somewhere that even most 2000mA USB Chargers just give 500mA in the beginning and due to some data pins activity they start generating 2000mA. If this is the case then Nexus 5 will force only 500mA or so from the charger that it is not compatible with. If we use some adapter that generates constant 5V 2000mA irrelevant of communication on data pins like the ones with 3.5mm pin which does not have any data pins, at least we are guaranteed that, at least full power is coming out of the adapter at all times.

wicpp said:
May be we can use fixed voltage and amp adapter just like the following
http://www.amazon.co.uk/2000mah-Ada...ds=5V+2A+2000ma+AC+Power+Adapter+Wall+Charger
I know it is up to the device (Nexus 5) that how much load it will put on the adapter to consumer out of 2000ma or 2A. On the other hand I have read somewhere that even most 2000mA USB Chargers just give 500mA in the beginning and due to some data pins activity they start generating 2000mA. If this is the case then Nexus 5 will force only 500mA or so from the charger that it is not compatible with. If we use some adapter that generates constant 5V 2000mA irrelevant of communication on data pins like the ones with 3.5mm pin which does not have any data pins at least we are guaranteed that at least full power is coming out of the adapter at all times.
Click to expand...
Click to collapse
I am given to understand that it has nothing to do with the "intelligence" of the charger, but with basic electrical principles.
That would imlpicate that if a device requires 500 mA, the charger will supply 500 mA, if the device would require 3000mA, then it would supply 2000 mA, being it's maximum current (flow).
As far as I know, a powersource ONLY generates a flow (Amps) up to it's maximum limit, if it is connected to a consumer (device). No connected device / consumer leaves no flow to be generated.
Please correct me if I'm wrong.
Added to my little test earlier today: The phone didn't get hot, at most it would be slightly less cool..... for the PS the same.

Related

[Q] Does i9000 support qick charge - battery charging spec 1.1 ?

HI,
does the i9000 Galaxy S support the quick/fast charge from battery charging spec. 1.1?
My new pc mainboard does support this via software/driver. And allows to load with up to 1,5A
I couldn't find information on that.
The i9000 is USB 2.0 not USB 3.0, so the answer is no.
not exactly correct
as it does charge faster with a higher AMP output charger.
i use a 2 Ah or 2000 mAh charger in my car and the phone does accept the faster / quick charge
so if your PC has the option to do the higher 1.5 Ah output, it will take it just fine
just like if you have a 1200 mAh wall charger as some people here uses.
I installed the asus driver which installs a service and the aicharger.sys
I restarted.
They tray shows an icon with a plug, but it is crossed. Like disconnected.
I pluged in the i9000 via the usb2.0 port an no changes.
I then pluged the phone in to a usb3.0 port but the icon still shows disconnected (or ai-charging off)
Any ideas?
AllGamer said:
so if your PC has the option to do the higher 1.5 Ah output, it will take it just fine
Click to expand...
Click to collapse
This is the bit that is not exactly correct. Regardless of how the hardware is set up it's up to the phone driver to request a powersupply from the computer. As it is the Galaxy only requests only 2 unit loads (200mA) from the computer, no where near the 500mA max of the USB2.0
So no simply plugging in a more capable computer won't change a thing.
interesting.
Are there any mods or fixes to support more usb power while connected to a pc?
None that I have seen.
ok, so the only possibility to charge faster is, to get an after market 3rd party wall plug with higher current than 700ma?
garbz said:
This is the bit that is not exactly correct. Regardless of how the hardware is set up it's up to the phone driver to request a powersupply from the computer. As it is the Galaxy only requests only 2 unit loads (200mA) from the computer, no where near the 500mA max of the USB2.0
So no simply plugging in a more capable computer won't change a thing.
Click to expand...
Click to collapse
Interesting. So does the SGS actually use all of the 700mA out of the stock factory charger? If I use my 2.1 A charger could I overheat the battery?
Ok I've had it with the speculation. I've got a USB micro socket and plug on order and I'm going to make a pass through cable and measure the 4 different chargers I have here at the moment this weekend so we can put this one to rest
Stay Tunes.
Ok did a test. No the SGS does not use all 700mA. It uses 470mA. Charging is faster from the dedicated charger than the computer. I verified that the phone only draws less than 100mA from the computer socket.
http://forum.xda-developers.com/showthread.php?p=14272927#post14272927
Thank you.
But can I get more current from my PC with ASUS ai Charge?
I installed the driver but the icon in the tray doesn't recognize my Samsung.
That is because it doesn't have something an Apple Product has.
Apple products get more current with that driver/software thing. But the i9000 doesn't work with it.
in the past i checked if it is possible to charge the battery faster, and not Necessarily through the phone.
i asked a guy who works with electronics and he simply explained that everything is possible, even charging the battery to full in a few minutes, but it WILL kill the battery very fast...
yeah i installed to anticipate a quick charge...but all i get is icon with a big cross...
deleting it now......its useless to me...
SpaZzzzz said:
i asked a guy who works with electronics and he simply explained that everything is possible, even charging the battery to full in a few minutes, but it WILL kill the battery very fast...
Click to expand...
Click to collapse
Everything is possible when you charge the battery itself directly, but not when you charge through the phone. The phone is the charger. The computer and the wall plug only provide power to the phone. Unless you go in with a soldering iron there's nothing you can do to speed up the charge beyond what the Samsung wall adapter gives you.

Charging the Infuse in the car

Does anyone have issues charging the infuse using the car charger? It seems like it takes forever
Sent from my SAMSUNG-SGH-I997 using XDA App
reissy said:
Does anyone have issues charging the infuse using the car charger? It seems like it takes forever
Sent from my SAMSUNG-SGH-I997 using XDA App
Click to expand...
Click to collapse
Yes it will be buddy theres no yet i.found that leaving it alone and not using it is only way.to.enhance performance
Sent from my SAMSUNG-SGH-I997 using XDA Premium App
reissy said:
Does anyone have issues charging the infuse using the car charger? It seems like it takes forever
Sent from my SAMSUNG-SGH-I997 using XDA App
Click to expand...
Click to collapse
Which car charger? The AT&T one?
The AT&T one sucks - very low current limit, and it's detected as a USB charger by the Infuse and not as full-current charger.
If you use the car dock, any high-current charger (like iPad chargers) will work with the Infuse.
If you don't use the car dock, if you use an iPad/iPhone charger, you have to open up the charger and short the D+ and D- pins of the USB connector of the charger with a solder blob, or use a "charging adapter" cable. (Apparently AT&T sells such a cable - the negative reviews for not working for data transfer mean it'll work great for charging from iPhone/iPad USB chargers.) I use the 1A port of a Scosche reVIVE II with the D+ and D- pins solder-blobbed together.
Also, if the CPU is running and the screen is on, CPU and screen usage count against the phone's charge current limit, so will significantly reduce charge rate. (Samsung noobed that one...)
I found that turning off the data makes it charge faster!
Sent from my SAMSUNG-SGH-I997 using XDA App
debra said:
I found that turning off the data makes it charge faster!
Sent from my SAMSUNG-SGH-I997 using XDA App
Click to expand...
Click to collapse
Samsung noobed it up in this phone's charging design - CPU/screen, and maybe even radio current usage count against the phone's charge current limit. This means that instead of 600 mA going only to the battery, it's 600 mA going to battery and all sorts of stuff - so the battery gets far less. This is why battery can actually drain while running navigation.
However the AT&T charger itself imposes a lower current limit than this, so even if Samsung hadn't noobed it, you'd still get a slow charge.
Entropy512 said:
Samsung noobed it up in this phone's charging design - CPU/screen, and maybe even radio current usage count against the phone's charge current limit. This means that instead of 600 mA going only to the battery, it's 600 mA going to battery and all sorts of stuff - so the battery gets far less. This is why battery can actually drain while running navigation.
However the AT&T charger itself imposes a lower current limit than this, so even if Samsung hadn't noobed it, you'd still get a slow charge.
Click to expand...
Click to collapse
Do you think it would charge faster under GingerBread? I cannot have a phone like this if it takes forever and a day to charge. That just sucks.
reissy said:
Do you think it would charge faster under GingerBread? I cannot have a phone like this if it takes forever and a day to charge. That just sucks.
Click to expand...
Click to collapse
I won't know until I've had a chance to look at the source drop.
Ideally:
They've fixed it so CPU/screen/etc usage doesn't count against charge current.
Workaround if they haven't:
It's possible to bump charge current up to 800 mA (stock is 600 mA). While this initially seems like only a 25% boost to charging, the fact that CPU/screen/etc is using part of the charge current limit means actual battery current will be up significantly more than 25%.
Entropy512 said:
I won't know until I've had a chance to look at the source drop.
Ideally:
They've fixed it so CPU/screen/etc usage doesn't count against charge current.
Workaround if they haven't:
It's possible to bump charge current up to 800 mA (stock is 600 mA). While this initially seems like only a 25% boost to charging, the fact that CPU/screen/etc is using part of the charge current limit means actual battery current will be up significantly more than 25%.
Click to expand...
Click to collapse
Interesting. I wonder if a custom kernel could fix this issue. Is that possible?
Entropy512 said:
Which car charger? The AT&T one?
The AT&T one sucks - very low current limit, and it's detected as a USB charger by the Infuse and not as full-current charger.
If you use the car dock, any high-current charger (like iPad chargers) will work with the Infuse.
If you don't use the car dock, if you use an iPad/iPhone charger, you have to open up the charger and short the D+ and D- pins of the USB connector of the charger with a solder blob, or use a "charging adapter" cable. (Apparently AT&T sells such a cable - the negative reviews for not working for data transfer mean it'll work great for charging from iPhone/iPad USB chargers.) I use the 1A port of a Scosche reVIVE II with the D+ and D- pins solder-blobbed together.
Also, if the CPU is running and the screen is on, CPU and screen usage count against the phone's charge current limit, so will significantly reduce charge rate. (Samsung noobed that one...)
Click to expand...
Click to collapse
Would one of these work? I use it on my Galaxy Tab 10.1. It has a data/charge switch.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330565218553&ssPageName=STRK:MEWNX:IT
reissy said:
Interesting. I wonder if a custom kernel could fix this issue. Is that possible?
Click to expand...
Click to collapse
It is entirely possible to crank the charge current up to 800 mA - I've done it and have been testing it on my phone. I have some additional stuff I want to do before general public release which is hard because the charge control stuff is major spaghetti code in the Froyo kernel. I'm hoping the GB kernel source is a bit cleaner.
I am not sure if it is possible to fix the fact that CPU/screen/etc usage is counted against the battery charge current limit. This may be simply bad hardware design. There's a slight possibility that it may just be that a register in the MAX8998 is being set improperly, such as the ESAFEOUT bits. When I get home and take a look at the GB kernel I'll know for sure. The problem is that the MAX8998 datasheet is proprietary and so the only documentation for this chip is the kernel source itself - which isn't particularly good for a number of aspects of the chip.
MisterEdF said:
Would one of these work? I use it on my Galaxy Tab 10.1. It has a data/charge switch.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330565218553&ssPageName=STRK:MEWNX:IT
Click to expand...
Click to collapse
I'll test - I've got a charger modded for charging my Tab 10.1, but I haven't tested it with the Infuse. I know solder-blobbing D+ and D- of an iPad charger works, but not what happens if you mangle the resistors in such a way that Tab 10.1s charge.
I have a charger from Griffin that works with my iPad that is a mini cig lighter adapter plug with a USB plug in it. It comes with a 30 pin cable for iDevices, but if I plug the micro USB cable that came with my Infuse it works great and charges relatively fast... I haven't done any serious testing, but from what I can tell it's much faster than if it were charging off my laptop's USB, but not as fast as being plugged into the wall.
What I think makes the difference is the fact that the charger is iPad capable, which means it's rated to output more power than the basic iPhone/pod versions. The iPad requires something like 2.1 amps compared to the .5 amps the normal usb chargers put out. This is why most laptops older than about 3 years can't charge the iPad via usb.
Now, I know my reference to "amps" I will be corrected or clarified. I'm no electrical engineer, lol... but what I'm going off is he output listing on the chargers. Bottom line is the iPads need a lot more juice and maybe so do our Infuses.
Hope this helps/makes sense!
tazm0n said:
I have a charger from Griffin that works with my iPad that is a mini cig lighter adapter plug with a USB plug in it. It comes with a 30 pin cable for iDevices, but if I plug the micro USB cable that came with my Infuse it works great and charges relatively fast... I haven't done any serious testing, but from what I can tell it's much faster than if it were charging off my laptop's USB, but not as fast as being plugged into the wall.
What I think makes the difference is the fact that the charger is iPad capable, which means it's rated to output more power than the basic iPhone/pod versions. The iPad requires something like 2.1 amps compared to the .5 amps the normal usb chargers put out. This is why most laptops older than about 3 years can't charge the iPad via usb.
Now, I know my reference to "amps" I will be corrected or clarified. I'm no electrical engineer, lol... but what I'm going off is he output listing on the chargers. Bottom line is the iPads need a lot more juice and maybe so do our Infuses.
Hope this helps/makes sense!
Click to expand...
Click to collapse
It's not just about the charger's amperage limit (and yes, amps is correct, you got it right.), but telling the phone that there is a high-current charger connected.
The standard way of doing this (which our phones follow) is to short D+ and D- together.
The Apple way of doing things is to use resistors from ground and +5v to set D+ and D- to specific voltages - 2.0 and 2.8 volts to be specific. Our phones usually detect this as a USB host and limit charge current to something like 475 mA. (I forget the exact value.)
Galaxy Tabs do it yet another way - tie D+ and D- together and use resistors to make them both around 1.2 volts. (Edit: Just tried my Tab 10.1 wall charger. Our phone detects this as an AC charger.)
Even with a high-current charger, our phones limit battery current internally to 600 mA on AC. Unfortunately, CPU/screen usage is counted against this limit, reducing actual current into the battery. The charger chip in our phones allows up to 800 mA. I've got a kernel that I use myself that does this but I'm a bit paranoid about it stressing the battery which is why I haven't publically released it.
Good news and bad news from the Gingerbread kernel: The bad news is I don't see anything obvious that would fix the flaw of CPU/screen current counting against the charge current limit. The good news is that implementing a safer way to crank the charger current is a LOT easier. It would charge at 800 until the battery hit a certain voltage (currently I'm thinking 4.05 volts), then 700 mA up to 4.1 volts, then 600 up to charge termination. I might make those 4.0/4.05 to be safe. Doing this in the Froyo kernels would have been painful, the Gingerbread kernel's code is much cleaner and this should be a lot easier to add.
@entropy512
So are you saying the eBay Galaxy P1000 Tab charging adapter I pointed to a couple messages back should work on the Infuse without having to modify the charger when set in CHARGE mode?
MisterEdF said:
@entropy512
So are you saying the eBay Galaxy P1000 Tab charging adapter I pointed to a couple messages back should work on the Infuse without having to modify the charger when set in CHARGE mode?
Click to expand...
Click to collapse
Based on everything I've heard that says the P1000 charging adapter works on the P7510 (Tab 10.1 wifi), yes, since our phones detect Tab 10.1 chargers as full-blown chargers.
Entropy512 said:
If you use the car dock, any high-current charger (like iPad chargers) will work with the Infuse.
<SNIP>
Also, if the CPU is running and the screen is on, CPU and screen usage count against the phone's charge current limit, so will significantly reduce charge rate. (Samsung noobed that one...)
Click to expand...
Click to collapse
I was impatient and picked up the (excellent!) Samsung car dock and can reconfirm (just for another datapoint - Entropy's comments are gold here!) ...
With Waze or Google Maps/Navigation running, background music streaming (Pandora etc) OR a phone call underway (50/50) and a relatively high brightness setting the whole time (65% this morning - it was SUNNY!) my setup *LOST* charge on my 50+ mile drive (from 78% to 73% or so). All sound over Bluetooth the whole way. WiFi off, GPS (duh) on.
My Setup: Cheap Woot!ed Belkin 9V-USB 1A adapter with an Amazon-sourced Samsung original data/charge cable and the Samsung car dock.
Workable - at this rate it would lose ALL charge AFTER my rather substantial gas (diesel!) tank is empty.
BUT the new kernel or a charging fix would be great because then I don't have to remember to enter the car with a fully charged phone, or conversely, worry that I may leave, and thn run out, since charge was depleted en route!

[Q] charging the G2X with iphone charger?

HI everyone, hope thats the right forum
I have in my possession an iphone 4 charger, and since i dont have a dedicated G2X charger i was wondering if it is possible to charge the LG phone with Iphone charger?
thanks!
Well I thought iPhones use same charger as ipods which has a lot wider plug than an android charger. But if that's changed and it fits than plug it in and find out.
Sent from my LG-P999 using xda premium
I don't see it working unless you have some sort of an adapter. The G2x uses a micro USB port, and the iPhone uses a proprietary port.
please see bellow what charger i have. just need to plud the USB cord in the charger, since it have USB input.
so, technically it should work, but will this affect the battery in the long run? i mean, maybe the voltage\current values are different.
If it is a USB adapter then it should conform to USB standards and would then work. I think most of the previous responses assumed you meant a charger with the iPhone tip.
Sent from my LG-P999 using Tapatalk
The idea itself will not work, you can pick one up from Amazon or eBay for pretty cheap.
Sent from my LG-P999 using xda premium
Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.
lilaliend said:
Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.
Click to expand...
Click to collapse
That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X
Mine is rate for 1AMP.
Sent from my LG-P999 using xda premium
nycelitemaster said:
That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X
Click to expand...
Click to collapse
How does it even fit? The ports are totally different. Perhaps an adapter?
Sent from my LG-P999 using xda premium
DON'T DO IT!!!! your phone will suddenly become just like everyone else's and you won't be able to do anything about it! your technology will become dumbed down, and you will becomea victim of conformity!
HEED MY WARNING!!!
Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.
Core Memory said:
Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.
Click to expand...
Click to collapse
Good info.
Thanks
Sent from my LG-P999 using xda premium
thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!
un.droid said:
thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!
Click to expand...
Click to collapse
Yes, it's totally safe. I've got a service manual for an LG phone which is substantially the same as the G2X and Optimus 2X which shows the battery charge circuitry. That circuitry regulates battery charging. Here's some more info regarding the battery:
90% = 4.05V +/- 0.05V
60% = 3.83V ditto
30% = 3.72V ditto
10% = 3.64V ditto
OFF = 3.42V
The battery voltage decreases according to the load current (milliamps) over a period of time. The higher the load current during a specific period of time, the quicker the battery voltage decreases; that's why it is important to have everything except the cell radio and the operating system off when the phone is in standby. There will be some background processes, etc., which are necessary too. Bluetooth, GPS, and WiFi quickly drain the battery. Automatic updating should be turned off always. If you're not expecting any calls, turn the phone off. Setup your phone to reroute received phone calls to your home or work phone, if the call is important they will leave a message, then pick up the messages at your convenience. Use a ROM and kernel which are known to have good battery life.
ive been useing the iphone dock to charge my g2x and it works fine lol no issue

How to mod charging cable for fast charge?

Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
I think the mod (shorting the data lines) should work, but just make sure that the charger is actually capable of delivering the right amperage.
whoa, u really wanna do that, coz the wont hold for a long time, 3A really a big current
syahazu said:
whoa, u really wanna do that, coz the wont hold for a long time, 3A really a big current
Click to expand...
Click to collapse
As of my understanding you are trying to say that charging the battery at 3A would give shorter batterylife.
Would you kindly post in a way readable for humans to make your meaning clear, as your post as quoted here was a struggle to understand.
And for complying to USB standards the device is probably able to output 2A on one of the ports and 1A on the other, totalling in a amperage of 3A. Now as I took a look at the adapter and it's specifications, it seems to me that it is just a 7805 voltage regulator in an enclosure, which I honestly wouldn't trust even a little bit.
Lähetetty minun C6603 laitteesta Tapatalkilla
velihukka said:
it seems to me that it is just a 7805 voltage regulator in an enclosure, which I honestly wouldn't trust even a little bit.
Click to expand...
Click to collapse
I'm not enough of a techie to confirm or deny if this would work, but I do agree with Velihukka... I got a bad feeling about this...
You do realise to get thing working properly you'd need to wire a new 12V circuit into your car's switchbox right? You don't want to be pulling an extra 3A out of a random 12V line in your car, a lot of your internal electrics are only running 10A fuses.
If you don't smoke, you could use the line powering your cigarette lighter... but then that would beg the question, why not just use a 12V USB adaptor that can output 3A and short the data terminals?
sorry 4 my english mate, im still improving it.. yup, i think that can do, but depends on you... i would rather use 2a current output charger... i hope my batttery would last longer lifetime when i used it
You should simply go for this
http://www.belkin.com/in/IWCatProductPage.process?Product_Id=735847
It will cost you around 400 bucks for 2.1 Amp socket in your local car accessories market
And then use your data cable to charge your phone...
Sent from Sony Xperia ZL 4.3 Rooted
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
It wont work at all for xperia z. i am an hardware tester and i am sure any mods to hack battery life or charging it fast will destroy your battery.
You cannot force more power into the battery. The phone has circuitry that regulates the charging current, which will have upper and lower limits. If that upper limit is say 2A, it doesn't matter if you plug into a 2A power supply or a 50A supply, it will still only draw 2A.
Sent from my C6603 using Tapatalk
The phones circuitry charges the phone by 500mAh by unnamed or unknown usb cable. when you plug it to a sony cable it will give you "fast charge" so it charges with 900-1000mAh. So yeah, there is something in the cable that makes it different from the other ones.
Try it with your sony cable and you get max amperage, and yeah no point forcing a million amps to it when the phone just takes what it needs.
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
Xz has battery monitor and its the thing that none can bypass. Also everytime the device heats up the amperage going in the battery gets more limited or even depleting...
Defects or flaw I'm not sure, but thats just it with Xz

Usb otg and charging at the same time (kinda solved)

So as the title says ive kind of found a way for the s4 to be charged at roughly 500-600 mA while using usb otg.
So how did i do it?
!!Tutorial can be available if anyone wants it!!
By using the terminals on the back of the phone for the qi charging reciever i connected a usb lead to these terminals, providing a charging input to the phone, whilst leaving the micro usb port free making otg still work.
Tested on a ks01lte (i9506) device running the last CM12.1 nightly release
While it is a great achievement, it is rather limited in use.
The only reason, for me, to have the phone's USB port while charging is so that I can hook up a game pad through OTG and play games without the battery dying on me.
Unfortunately 600mAh would not provide a sufficient enough current for this to happen, the phone would slowly discharge due to it using more power than it gains.
Flixzorn said:
So as the title says ive kind of found a way for the s4 to be charged at roughly 500-600 mA while using usb otg.
So how did i do it?
!!Tutorial can be available if anyone wants it!!
By using the terminals on the back of the phone for the qi charging reciever i connected a usb lead to these terminals, providing a charging input to the phone, whilst leaving the micro usb port free making otg still work.
Tested on a ks01lte (i9506) device running the last CM12.1 nightly release
Click to expand...
Click to collapse
Can you not charge at more than 600Mah or is that the most the qi terminals will take?
https://www.amazon.com/Micro-Cable-Samsung-Player-OTHERS/dp/B00CXAC1ZW
When I last looked into doing this, all the cords I found only power the device that's connected, not the phone. Has anyone gotten the cord in the link and tested it? Will it charge your phone?
tigger69 said:
Can you not charge at more than 600Mah or is that the most the qi terminals will take?
Click to expand...
Click to collapse
Seems like that it is limited by the terminals
Sent from my GT-I9506 using XDA-Developers mobile app

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