Configurations Available:

1 x 6 cells       ( batteries connected end to end )
10.88" L   x   2.13" W  x   4.02" H

2 x 3 cells(B)   ( batteries connected back to back )
5.48" L   x    4.18" W   x    4.02" H 

2 x 3 cells(S)   (batteries stacked on top of each other )
5.48"  L   x   2.13" W   x     8.04" H