Mine came today, too. Battery was packaged separately, different than what some folks have complained about (already installed, and dead). Very nice RDS, just gotta decide what to put it on now.
P.S. One word of advice... Do NOT install the included scope cover if you haven't already mounted the light to your gun! The instructions say absolutely nothing about the proper use of the cover, but it is practically impossible to remove from the RDS if not attached to your gun.
Of course I'm NOT speaking from personal experience....
