The Shocker is becoming my first spare and giving my right arm a well earned rest, the Eclipse one was not mine mine is a plain black one... sweet as a nut but ancient.
I have read the manual and there is nothing about before first use, but I would hate to put it together, keep the car ignition on for 4 hours to charge it up (Where can I go that takes that long) and something go wrong, only to hear..."ahh well, you should really do this first to prevent...."