Page 393 - Lindens Handbook of Batteries

14.58 PriMAry BATTerieS

The good performance of the Li/MnO battery at the lower-rate discharges is evident, and it still
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delivers a higher percentage of its capacity at relatively high discharge rates compared to conven-
tional aqueous primary cells.
The discharge characteristics of a larger (D-size) spiral-wound Li/MnO battery are shown in
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Fig. 14.53. These figures show the discharge curves at three rates (250 mA, 2.0 A, and 3.0 A) at
temperatures from -40 to +72°C. The discharge characteristics indicate the fall-off in performance
at lower temperatures.

3.00
72°C
22°C
2.50
–10°C
2.00 –30°C
Voltage, V 1.50

–40°C
1.00

0.50

0.00
0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 50.00
Test time, h
(a)

3.00
72°C
2.50
22°C
–10°C
2.00
Voltage, V 1.50 –30°C

–40°C
1.00
0.50

0.00
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Test time, h
(b)
FIGURE 14.53 Discharge characteristics of spiral-wound Li/MnO D-size battery, (a) Discharge curve at
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250 mA amp rate at 5 temperatures. (b) Discharge curves at 2.0 A and 5 temperatures. (c) Discharge curves
at 3.0 A and 5 temperatures. Temperatures for all discharges are: +72, +22, -10, -30, and -40°C. (Courtesy
of Ultralife Batteries, Inc.)