I was wondering if it was possible to make a battery box for one of these. I have so many rechargeable AA batteries lying around (used to need them but now virtually everything has its own battery). I was hoping to find one of these types of tablets that allow usb charge to make it easier with an external but I haven't and I am not sure about making an extended battery out of a battery box for a normal ac connector like what most of these tablets have.
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