Customized version of http://www.thingiverse.com/thing:891747

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=891747

Using the following options:

cell_rim_thiknes = 1
cell_rim_hight = 2
cell_dia = 14.5
$fn = 48
tab_width = 5
tab_thickness = 1
pack_y = 1
pack_x = 6
cell_holder_hight = 5