Hi,
That's a great Radio!.. Lot's of fun.
There's a fine group where you can find out lot's of information on it:
http://groups.yahoo.com/group/thetransoceanicfanatic/
I've got a 600 TO.. I did a full restore. Love it!
Battery "kits" are still available :
http://home.comcast.net/~morrised2006/radios/radio6.htm
and also:
Batteries from Bill Morris.. email
[email protected] I'll have to check to see if he's still making them...
And the results:.. No, He is not making them now. 
Buzz
