OTG charging - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I need OTG with charging to run an external DAC for long periods without killing my battery.
Anyone know of ROMS or mods that can toggle a forced OTG with charging state? Or, the resistor specs to trigger the state in the stock kernel?
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Related

is a 3volt (50hz 5w) charger enough for a power usb hub to use on an android stick?

i found a usb hub i had, but i couldnt find a charger, but i have managed to find a sony charger i had which powers the hub its 3volt 500ma output? is this safe to use to power other accessories to use on the device (mx2)
Probably not. What kind of stick?
Sent from my Nexus 7 using Tapatalk HD
imito mx2
what voltage would i need?
I believe you'll want 5v
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[Q] car install no ac charging with otg

hello guys well i have a nexus 7 that i set up in my car everything working perfect but i cant get the battery to "ac charge" im using this cable
http://www.ebay.com/itm/Usb-type-A-...G-Micro-USB-female-power-supply-/310680595889
the issue is not in the charger because the charger im using when connect to the tablet directly does achieve ac charging but when i plug in the above splitter it looses it, if the cable is meant to separate data from power than why is this happening? how can i get "ac power" or fast charging, I currently have everything connect to a toggle switch that i leave on over night, and i really is not a big deal but i noticed the other day with the navigation on watching videos that the battery is still draining.. using timur kernel
thanks in advance
its obviously the splitter, from the looks of the cable on the micro usb socket its to thin to take the power?
You need to state more info. What kernel? Rom? Only a specialized kernel will allow otg host mode charging.
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If you are completely stock, the tablet will not charge while it is in Host Mode with the OTG cable attached. It can be done with a special kernel, though.
Yup, thats what I said.
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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Kodiack99 said:
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
Click to expand...
Click to collapse
I also have the timurs kernel but i dont see the difference between your cable and mine......
graydiggy said:
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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Click to expand...
Click to collapse
So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
davidadavila said:
So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
Click to expand...
Click to collapse
You need to short both the data pins together for AC charging. But if you do that, OTG is gone.
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davidadavila said:
I also have the timurs kernel but i dont see the difference between your cable and mine......
Click to expand...
Click to collapse
You are just using the kernel,usbrom is his full cm10.1 based custom rom. The proper otg cables need to have pins 4 and 5 (ground) together on the tablet micro usb end to activate the ofg and power,that why you need the special cable.Your cable only power the device on the usb end not the tablet,it says no device charging in the description.
Also with Timurs kernel or rom the data wire cross isnt needed,or the otg devices wouldnt work.
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Simultaneous charging with Pogo and Micro USB?

Can I plug in the Pogo charger and the Micro USB at the same time, and have a faster charge? I've tried it but I don't really know what to compare it to since I'm new to the Nexus and don't know really how long a full charge takes lol
It would be super sick if somehow this could slice the charge time in half.
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swagginandbaggin said:
Can I plug in the Pogo charger and the Micro USB at the same time, and have a faster charge? I've tried it but I don't really know what to compare it to since I'm new to the Nexus and don't know really how long a full charge takes lol
It would be super sick if somehow this could slice the charge time in half.
Sent from my Nexus 10 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
No. The charging icon will display but the N10 is not charging. That feature would need to be included in a ROM but neither stock nor any custom ROM has the capability. This limitation extends to using an OTG cable and pogo plug.
3DSammy said:
No. The charging icon will display but the N10 is not charging. That feature would need to be included in a ROM but neither stock nor any custom ROM has the capability. This limitation extends to using an OTG cable and pogo plug.
Click to expand...
Click to collapse
Thanks man. But I have a portable micro USB charger, if I connected that via an OTG cable, and pogo charged it as well, would that work?
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swagginandbaggin said:
Thanks man. But I have a portable micro USB charger, if I connected that via an OTG cable, and pogo charged it as well, would that work?
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Click to expand...
Click to collapse
No, there simply is no ROM that supports concurrent charging. In fact both stock and custom ROM's block pogo changing when the Micro USB port is used.

[Q] How can I get a faster charge from USB in my PC?

My Galaxy S4 charges.... terribly directly connected through USB into my PC in both USB 2.0 and USB 3.0 inputs.
Am I doing something wrong, is there a way to boost the charge you get from a USB PC input?
Thanks!
Most USB ports on a computer are only 0.5 to 0.75 amps. To charge your GS4 you really need about 1.0 amps, the charger that came with your GS4 is 2.0 amps. So no you can't get a better charge from your computer.
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Check the logo on the USB ports. Look for one with a lightning bolt. My laptop has specified ports that have higher output for charging.
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Some laptops from MSI are supported by their utility called Super Charger. This boosts the power output but also removes connectivity (I believe). So you won't be able to connect your phone and transfer data.
There maybe be a utility that supports your laptop for boosting charging. Best thing to do is Google around for some programs.
If your laptop is old you're probably out of luck.
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There is a cord that is used for external hard drives on laptops it uses two usb ports but plugs into one drive doubling the power. Just a thought. Only thing is they are usually mini usb not micro but an adapter should do it
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Thanks all! I also have another problem!
I read your answers, so I decided to get a 3 amp car charger for my S4! If the original S4 wall charger is 2 Amps, then a 3 amp car charger sounds good, right?
Unfortunately, my phone gains no charge from it in both of my cards, my phones battery just dies slower when plugged into the car.
Any tips? Thanks!
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Most car chargers lie about their ratings so that could be one problem, the other, is most phones see car chargers as a usb port charger instead of an ac charger so the rate of charge is automatically reduced to usb charging. Somewhere on here was a thread on how to modify a car charger so the phone would see it as an ac wall charger and allow it full output. I believe you have to open up the charger and jump a wire over. Search on here or google it and you should find it.
Could be a lot of things. But remember you phone will only allow its self to charge at a certain rate. Thus, purchasing high amperage chargers will provide no benfit.
High amperage chargers are more for tablets that require more power for their larger batteries.
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Mine does that. I have to reboot it while it's plugged up to my car charger. Thought my charger was bad after taking the MJA update. Still looking for a fix....
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May be silly to ask - can I use quick chargers?

I know Qualcomm quick charging isn't supported but any harm in using the chargers. I don't expect it to be any quicker than a regular charger but I just want to be able to charge at work while I'm waiting on getting another charger
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You can use QuickCharge charges for any phone, even if it doesn't support QuickCharge, it will just charge at the normal rate.
OK thanks! I forgot that I also have to get cables. The other included cable is way too short
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