Proceed CD Library

I have the Controller for it but no batteries and strange as it may seem, no one can help me figure out what batteries it needs. Without the batteries the unit will not operate. Any thoughts, beside junking this thing? I would love to have it up and operating for nostalgia mostly.

Perhaps buy a bunch of batteries and see what fits? I would imagine you can roughly estimate the size and type of battery by the compartment. What does this device do if I may ask?

The Controller allows you to access the CD’s to play or store them. Without it you can not do anything. There are no controls on the actual player itself. I think it might have been a custom or obscure battery, I tried using some common ones but they did not fit. I am hoping someone still owns one and can help me with this.

Someone must still own one of these and can help me out I hope.

@tonyaudio 

https://en.wikipedia.org/wiki/List_of_battery_sizes#/media/File:Batteries_comparison_4,5_D_C_AA_AAA_...

Do you know the voltage?