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 Originally Posted by pavvento
I searched through some of the videos but didn't hear it mentioned. Will the charger be a standard cable, or will it be proprietary. I remember having a Razr back in the day and although I had plenty of cables that 'fit' none of them could charge the phone because it wasn't a motorola cable.
I plan on picking up a few cheap cables to keep in places I'd have to charge but wanted to know what you guys thought.
There is no such thing as standard any more. Especially when it comes to charging.
Indications are that for fast charging the micro usb will use use a pin 2 and pin 3 short ("data pin short"); but shorted shorted at the charger so the cable itself will be standard usb with non shorted pinouts.
If you short the data pins at the charger, the cable can be standard even though the result is not standard. In such a scheme if the device to be charged sees no short on data lines it assumes transfer of data, and also assumes charging power available of <500 ma. If it sees a short on the data lines it assumes up to 1000 ma available.
If they choose this scheme what you will likely see is a charger with a detachable cable. the cable will be standard usb A to micro b. As a result some usb micro chargers will work and some will not. Fortunately motorola uses this scheme in its Razr2 series fast chargers.
A standard usb micro power supply with data lines not shorted should still charge but at considerably slower rate.
In short there is a very good chance that Pre will use Pro scheme. This is usb micro 5v charging at either 500 ma if connected to normal usb pinouts, or 1000 ma if data pins are shorted and charger can push 1000 ma. If that is the case high capacity proven chargers for razr2 and for Pro will work fine.
The difference between 500 ma and 1000 ma charging is not double the speed in charging but actually about 3x to 5x, or even faster, because the phone is already drawing an overhead itself. For example if you are running gps or wifi with screen on you could be drawing 400 ma leaving only 100 ma for charging. With a cheap charger it is even possible that you will discharge while hooked to charger.
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