No, not at all. All this information is helpful. I asked "one" question to start the thread, but there are many more questions behind that one so it's all good. I especially like hearing how others have come up with unique modifications, even if it's something "simple" like using a chunk of inner tube. That would hold the batteries in place and protect them from shorting to something.

ItsJustMe addressed something that's always bothered me - can you hook up too big of a battery to something? By "big" I mean amperage, not overvoltage. I always wondered if a battery with three or four or 20X the capacity of the original source could somehow arc across the internal circuitry. On the one hand, I knew that you could take a 12V car tail light and connect it directly to your car battery and the light would work. But a standard incandescent bulb is not the same as a $200 device with a circuit board and delicate electronics inside. ItsJustMe says "No", a bigger battery won't damage the device. I don't know "why" that is exactly, but I'll worry less about that in the future...