KingDani,
I don't believe that you have a serious problem, but I think you really need to answer the DR’s question; the DR will not charge if it thinks it is hooked to the computer for file management.
As far as batteries are concerned, I would worry more about the toll you’re taking on your
MacBook’s battery. You are essentially charging a battery (at about 70% efficiency) to charge a battery (at about 70% efficiency); you are losing about 60% of the energy you’re paying for,
and cycling your MacBook battery to death.
The common problem related to USB chargers is that
some of them will not charge
some devices. The circuitry in the DR will not accept a
wrong voltage, protecting your battery. If you have a USB charger, use it. If you buy one that doesn’t work, return it.
If you use a wall charger, your DR will not ask any questions.
Good luck,
Kent Walters