I am not going to be conectting the Battery Pack or the USB Cable to the Compuiter.
The Micro USB end of the Cable will be pluged into my Tablet.
The other end of the USB Cable that you would plug into the Computer I will cut off.the USB conecter.
Now after I cut off the USB conecter I will open up this end of the Cable.
I will take just the Red and Black wires and conect them to my Battery Packs Red and Black wires.
I will be useing 4 Battery Packs and each Battery Pack can hold 4 D Cell Batteries.
And the Battery Pack hold the D Cell Batteries in Series so I will end up with 24Volts.
But the mA will stay the same so I will get 4,000mAh.
Now this is what I ment I know I need 5Volts not 24Volts so if I use a Resister or a Variable Resistor to ajust the Voltage down to 5Volts I will be ok.
But you say the Current will be to Hight because USB Ports only putout 500mA.
But can I not use Resisters to drop the Current as well?