Overview Reviews Product Description CF-VZSU1BW can only be used for CF-33s which have large batteries pre-installed as a factory config. - CF-33GFWAZKA / CF-33GFWAZAACF-VZSU1BW can only be used for CF-33s which do have large batteries pre-installed. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Panasonic Toughbook CF-33 Large Battery Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments