Image Description -  0714-1-2hor

Two black and white bar charts are shown adjacent to each other.
The bar chart on the left is captioned “Figure 1. Specific Energy
Comparison of Secondary Battery Systems”.  The ordinate of this
chart is labeled “Watt hours Per Kilogram”.  The chart compares
the specific energy of various battery systems.  For each system,
the ranges of specific energy are plotted on both cell level and
battery level.  

On cell level, and in terms of peak specific energy, Ag/Zn has the
maximum specific energy followed by, in order of decreasing peak
specific energy, Ni/H2, Ni/MH, Ni/Cd, and Pb/Acid.  In terms of
largest range of specific energy, Ag/Zn exhibits the largest range
in specific energy, followed by Ni/MH, Ni/H2, Ni/Cd and Pb/Acid.

On battery level, and in terms of range and peak specific energy,
Ag/Zn has the maximum range and peak specific energy followed by,
in order of decreasing range and peak specific energy, Ni/H2, Ni/MH,
Ni/Cd, and Pb/Acid.

The bar chart on the right is captioned “Figure 2. Volumetric Energy
Density Comparison of Secondary Battery Systems at 20 degrees
centigrade”.  The ordinate of this chart is labeled “Watt hours Per
Liter”.  The chart compares the volumetric energy density of various
battery systems.  For each system, the ranges of volumetric energy
density are plotted on both cell level and battery level.

On cell level, and in terms of peak specific energy, Ag/Zn has the
maximum volumetric energy density followed by, in order of decreasing
peak energy density, Ni/MH, Ni/Cd, Ni/H2 and Pb/Acid.  In terms of
largest range of energy density, Ag/Zn exhibits the largest range in
energy density, followed by Ni/MH, Ni/H2, Ni/Cd and Pb/Acid.

On battery level, and in terms of range and peak specific energy,
Ag/Zn has the maximum range and peak energy density followed by, in
order of decreasing range and peak energy density, Ni/MH, Pb/Acid,
Ni/H2 and Ni/Cd.