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Additional Pictures 

 

The Texas Instruments BP1A Battery Pack used with
SR-50A, SR-51A, SR-56, TI-58, TI-58C and TI-59 calculators. 


horizontal rule

If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, December 20, 2023. No reprints without written permission.