I have an interesting question/suggestion - if we use a USB Hub, and we plug the charger of the phone to the hub, and then the phone and everything else, will there still be a risk of burning smthing in the phone, or it will act just as the livedock???
Nope. I myself use a USB hub, and plug the USB cable from the hub to my phone to charge it. Even now, my USB thumb drive is connect to the hub as well. Don't worry too much about burning your phone, it won't. The voltage in the USB hub is well below 5 volts (or even less), which is good for slow trickle charging as it would preserve your battery (as slow trickle charge generates less heat, and heat reduces the life of your battery).
I think you didn't get the idea.
My idea is to plug the charger to the usb hub, then plug the phone to the usb hub, then plug a flash drive, and/or wifi mouse and keyboard to the hub as well. The idea is to simulate the livedock with a usb hub and avoid burning your phone.
Related
Hi all, 1st post, but I promise I have searched.
I have a SPV C500 and cant seem to get my car charger to work. I seem to recall that someone once told me that there is a difference between a charge cable and a data/sync cable.
This almost makes sense given that the phone will not charge when connected to a USB port, unless activesync is installed. What does activesync do to allow the charging to work? A charge cable, that worked with my cigarette lighter to USB would be great in the car, but it would also be useful in situations where I am at a PC without activesync installed (often at internet cafe's which prevent installing software).
Hope someone can help
Adam
What does ActiveSync do to allow the charging to work?
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Click to collapse
this is most likely because your computer dont turn on 5volt to power on usb before devices are recognised and activesync make that happen
hmmm .... interesting
I have measured the voltage coming from my USB port with a multimeter, which is just 5V. If this is directly off the USB port, without activesync running, then the PC is supplying a constant 5V.
I have also measured the voltage from my car's cigarette lighter adaptor, guess what, also 5V.
There must be something in the phone which makes it "accept" the 5V input.
I cant figure it out tho, is it something to do with the data pins? do these need to show the phone a certain resistance or something (such as dead short) before it will allow the phone to charge?
Seems to have the USB charging disable?
http://forum.xda-developers.com/showthread.php?t=273344&highlight=
Read the post by `Severok`
can anyone confirm that it takes a way longer time to charge a device via car charger or USB? why is the device unable to charge via car or usb once fully drained? Any Solution?
USB standards allow 500mA per port whereas the standard mains chargers output somewhere between 1A and 1.2A therefore USB is slower, also below a certain point there isn't enough power in the battery to fully power the device such as the phone section, bluetooth, Wifi, SD cards etc, and USB power levels don't contribute enough to this. The solution would be to get a USB -12V car adapter that supplies over 1A which should do the job.
Is there a way to charge ya phone through the USB as quick as it would charge through the mains?
It takes for ever to charge through USB?
No. Because USB hub doesn't have as much output as charger.
I know standard usb gives 5V
how much does the wall charger give??
I have a freeloader solar charger, and don't know if I can use the 9.5V output on my desire.
jbej said:
I know standard usb gives 5V
how much does the wall charger give??
I have a freeloader solar charger, and don't know if I can use the 9.5V output on my desire.
Click to expand...
Click to collapse
It's not the Volts that's the problem its the Amps
The wall charger provides 1A, a USB connection provides 500mA, so half as much.
Ok thanks people
Never tested never heard about but maybe a Y-cable (2 standard A plugs on one side, a micro USB A on the other side) is what you are looking for. It provides the 500 mA from two individual USB ports. However, you have to make sure that both ports can supply 500 mA individually and simultaneously! E.g. a passive USB hub will not work since all USB ports have to share the 500 mA from the host PC. You would need a powered USB hub.
Get a cheap USB cable extender.
Cut it open.
Short the 2 data wires (white and green)
Tape it back up.
Use this in-between your normal USB cable and your USB port.
I recently got a LG G3 and I want to use it the same way I did my RAZR (XT912). I had a OTG cable going into the data end of a y-splitter (USB data in with a USB power and a mini a in) with the power end going into either my computer or a USB wall charger and the mini end pulling from a USB hub. The result being I can use multiple USB inputs and it was able to charge the phone as well.
With my G3 I was able to get it to find both my HDD and my flash drive I have going into the hub as well as a PS3 controller plugged directly into the hub but it won't charge for some reason even with my USB devices unplugged from the hub. I did notice periodically my clock app will show a charging symbol next to it like its charging even though its losing power.
Is it possible that I need a stronger power signal going into the y-splitter for the G3, a new y-splitter, or a entirely different setup?
I really don't want to have to root it if I can help it but I'm thinking that might be why its not allowing power in. Then again I'm not a master with this sort of thing so I could be wrong.
Also if someone knows if there is someway to get Slimport to work with charging and OTG input that would be good to know although I don't think that is possible
***update***
So I dug out the ac adaptor for my USB hub, then hooked my G3 up to the hub like before with nothing else in it and left the screen off for a hour or so and it charged it like 2% even though it said it wasn't charging.
So it looks like it is working but there not enough power. Anyone have any idea on how to get more power going into it?
There are 3 parts to charging.
The power supply need to have a voltage in the acceptable range. Generally not an issue.
The power supply needs to be able to output enough amps. If it is too low, you will often see a slow charging message.
The cable to your phone must have a low enough resistance on the wires supplying power. If the resistance is too high you will get a voltage drop on the wires.
A power supply with higher amp output and/or a lower loss cable on the path from the power supply to the phone are likely the issue.
If your connection is OTG-splitter-another_cable-power_supply, both splitter and another_cable add resistance on the path to power_supply.
so i have two usb cables and original. 2.0 amp samsung wall charger, the samsung cable i use for wall charger at home so when i setup my s3 as a AP i need constant 2.0 amp from charger keep up with the demand and charge the battery at same time but now i cant do that i have turn off hotpot and leave the phone alone so i can charge. i brought in my car usb cable, and now i can hotpot and charge at the same time no problem, so what is the problem with other cable? i mean cable still works and i still can use it for data transfer etc...
just cant use as heavy demand cable.
I have some cables from the "box o' cables" we seem to collect that have the same issue. Some of them won't keep up with the s3 others won't keep up with my n7. I notice it more with older cables so it seems to me that its the cable breaking down or wear on the contacts inside the connector itself.