depends what you mean by protected...
no they don't have a PCB...they dont need one...
all better Lithium
batteries (high drains included) have internal protection against over pressure and over heating...(that's the ventholes you can see in the positive end and the metal strip you see running down the side)...
protected Li-Ions have a PCB to brotect against over discharge, over charge, and shorts.... *however it's been reported that PCBs can often be damaged by charer malfunction or static electricity without any visible signs making them essentially unprotected..
the high drain LiMN is a more stable chemistry, does not produce it's own oxydizer (so if for some reason it did vent it would vent without flame), can withstand higher temperatures than Li-Ion without ill effect...yes you do have to watch that you don't overdrain them to the point where they will no longer take a charge...
and they don't get overstressed like the standard Li-Ions do...