[Milsurplus] Lead Acid cell

[Robert Nickels]

I picked up an old boat radio that uses battery tubes and a vibrator 
supply to operate from a single 2 volt lead-acid cell.  The Willard tag 
is in the unit and I'm guessing it's the same as the BB-54-A that was 
used by some military radios.

I assume there are no sources for those,  so was wondering if anyone 
might have a suggestion for a 2 volt cell other than the Hawker Gates / 
Enersys SLAs?

Thanks and 73,
Bob W9RAN