Heh. Don't worry about it. My grammar is poor while I'm sitting at a keyboard at my desk. I think you may be right about the squealing having something to do with resistance. It gets louder and seems to slightly change pitch as increasingly more load is put on it. full backlight, playing and mp3, and downloading over wlan to the SD card results in a sound that anyone can hear from a few feet away. At lower power usage levels it is quieter. Another thing that bothers me (and is the reason I haven't used it with my new C1000 yet, only my old 5500) is that when using the brick as the power source the orange charging light on the Zaurus never goes out. Anyways, I'm thinking this one is probably defective, so I'll probably buy another one, maybe of a different brand if I can find one.
Also, for anyone who's interested, I just cracked open the case on my PSP power brick, and it is in fact a lithium ion cell with a small circuit board next to it. In my limited electronics knowledge I recognize a couple capacitors and a resistor or 2, and some very small microchips. If anyone wants pictures or model numbers of any of these I'm happy to oblige.
-John