I checked apple service manuals last night and I noticed that ALL notebooks are only civered up to 300 cycles...
So i think we are both wrong in this one.
not sure which service manual your reading, but im looking at the online service manuals, they state 300 cycles on rev a and 750 on rec b/c.
all other notebooks are now covered with 1000 cycles garuntee's(non removable),
your reading ALL notebooks with removable batteries are covered with 300 cycles counts, aside from the air b/c which retains 750.