Proceed CD Library

4.85V 1/2C Cell Array Battery
Does this make sense to anyone?

@tonyaudio  

1/2C is the battery size (Dia.26x24mm L), 4 batteries in series = 4.8V (1.2Vx4). Without seeing the actual battery compartment, just a wide guess.
http://www.batteriesinaflash.com/special-application-111/assembly-cells/nicd/1-2c

Thanks. The 1/2 C size Diameter is correct, fits great but it needs a total length of between 4 3/4 and 5" as it has a collapsable spring screwing in the top. I think I would need your four batteries for 4inches plus some tin foil folded up (on the negative end) to make up the difference. Does anyone think this would work?

tonyaudio

I wonder if Madrigal/Proceed made this battery in-house? 
Additionally, it would be interesting to learn how many Proceed CD Library machines were built? Quite expensive in 1990's dollars at full retail.  

Happy Listening!

I am thinking you might be right about the battery pack being in-house. You would think that at $13000 1990 dollars someone would still have the unit and battery pack lying around somewhere. I can not be the only human on the planet with this player. At least I hope not.

Can you get a schematic for this unit? That might offer a useful clue.