lol, it just means i'v read a quite a bit, mostly sped red thou,,,, and ever since I got my ET cert i feel like i dont know enough to call my self an electronics technician, soo I don't know how much I actually know, that signature is my way of saying my advice doesn't come with a warranty!!
You are right though, i don't know how many chips iv wired exactly to the data sheet, with all the little resistors and caps..... after hours of tinkering trying to get it going, I RIP out 90% of the guts, and bing thing flies like a kite!
......and really what does science know anyway, more than anyone else ever has, but that may be a low bar
but bak to my usb! how would i do that, would a simple 3resistor voltage divider do it?
also are there any rules to NiCd charging, is there a max/min current to charge,
what about the phone, its a Li ion 3.7v, does it have max/min current?
chargers always use DC current right?