A simple battery model established by Denno [Power system design and applic
ations for alternative energy sources, Englewood Cliffs, NJ: Prentice-Hall:
1989] is used to investigate the basic question of how to maximize the wor
k output of an electric battery. The discharge time is determined reasonabl
y and the load resistance is matched optimally. The results obtained here c
an be used to explain quantitatively the example given by Gyftopoulos [Ener
gy 24 (1999) 1035]. (C) 2001 Elsevier Science Ltd. All rights reserved.