MobileRead Forums - View Single Post - Troubleshooting Can I safely charge my Kindle 3 or Kindle DXG with my smartphone wall adapter?

screwballl · 01-10-2011, 12:15 PM

USB is USB, whether it is coming from the computer, adapter or other source. USB (1 and 2) is limited to 5V DC. I have not learned enough about USB3 to know if it has the same voltage limitations...

Only if there is some sort of out of the ordinary proprietary device that uses a USB style type connection with their own 12V or other output voltage is it NOT recommended. That is why it helps to look at the adapter itself to make sure it says around 5V.

For the Amps, anything from 500mA (0.5A) to 1000ma (1A) will work fine, the device will use/draw what it is able to which is typically 500-850mA (0.5-0.85A).

01-10-2011, 12:15 PM	#6
screwballl NewKindler Posts: 504 Karma: 1865773 Join Date: Dec 2010 Location: NWFL Device: Kindle3 Wifi	USB is USB, whether it is coming from the computer, adapter or other source. USB (1 and 2) is limited to 5V DC. I have not learned enough about USB3 to know if it has the same voltage limitations... Only if there is some sort of out of the ordinary proprietary device that uses a USB style type connection with their own 12V or other output voltage is it NOT recommended. That is why it helps to look at the adapter itself to make sure it says around 5V. For the Amps, anything from 500mA (0.5A) to 1000ma (1A) will work fine, the device will use/draw what it is able to which is typically 500-850mA (0.5-0.85A). Last edited by screwballl; 01-10-2011 at 12:20 PM.