Customized version of http://www.thingiverse.com/thing:1602962

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=1602962

Using the following options:

_lipHeight = 2.5
_batteryDiameter = 15
_walls = 2
letter_line_space = 5
_part = top
_fitGap = 0.1
_rows = 4
letter_text_line2 = AA
letter_text_line1 = 16
letter_height = 2.5
_insideHeight = 35
_base = 2
_columns = 4
_labelDepth = -0.6
letter_size = 9
font = Impact
y = 0
x = -7