USB data pin toggler for android devices

It's well known that android devices "know" whether or not to charge in USB (low current) or AC (high current) mode depending upon whether the data pins in the USB connection are shorted (AC) or not (USB). This makes a world of difference in charge time.

So you can just hack up a USB cable (short the data wires), but this renders the cable useless for data xfer. I haven't been able to find a "toggle" switch/adapter of some sort where you can selectively short the pins or not. This would be great for travel use and in the car.

Does such a thing exist?

Just get a car or wall adapter that shorts those pins. Not reason to carry a special cable that you can't use for data. Some wall/car adapters can only handle outputting 500ma, tricking the device into drawing more would end badly.

As an aside there are some cable that you can toggle between data and charge for the purpose of isolating the device from your computer, but most if not all of these will be limited to 500ma charging. The instances where something like this would be useful are pretty limited.

Quote from jkee : Just get a car or wall adapter that shorts those pins. Not reason to carry a special cable that you can't use for data. Some wall/car adapters can only handle outputting 500ma, tricking the device into drawing more would end badly. As an aside there are some cable that you can toggle between data and charge for the purpose of isolating the device from your computer, but most if not all of these will be limited to 500ma charging. The instances where something like this would be useful are pretty limited.

I agree, a lot of computers are limited on their output of power over USB. Yes there are the drivers you can install sometimes that can boost output but it doesnt work everywhere and I assume you would want a software free solution. If I was going to make a custom cable, I think I would go the route of one that uses 2 USB ports to draw power from, into one Micro USB port for the phone. Similar to what some USB external hard drives do.