VisorCentral.com (http://discussion.visorcentral.com/vcforum/index.php)
- Visor & Deluxe (http://discussion.visorcentral.com/vcforum/forumdisplay.php?forumid=1)
-- Revision b Questions, please help me! (http://discussion.visorcentral.com/vcforum/showthread.php?threadid=1316)

You may have something there, argent...I have had a look at both Rev A and Rev B and I believe the only difference is in the battery cover itself - I dunno if it's my imagination, but I think that the catch on the battery cover is slightly thicker and more robust on Rev B.