Replacement battery door for the HP 12C Calculators. Select the battery door version that matches how many batteries your specific 12C model takes.
12CBD1 - 1 CR2032 battery version (middle door in picture) The later 12C model takes one CR 2032 battery and requires the door measuring 1 inch (2.6 cm).
12CBD2 - Double Wide 2 CR2032 battery version (pictured on right) The double wide 12C calculator battery door measures 2.25 inch wide by 1.25 inch tall. If your calculator takes 2 CR 2032 batteries that fit side by side then you need this door.
12CBD3 - 3 Button Cell Battery version (small door pictured on left) The earlier 12C calculator model takes the small battery door that has a single tab, and measures .75 inch (2 cm). If your 12C takes 3 button cell batteries you need this door. Cost is higher on these because they are difficult to source.