Page 356 - Lindens Handbook of Batteries

LiTHiUM PriMAry BATTerieS 14.21

3.0
20 to 55°C
2.8
–20°C
Cell voltage, V 2.6 –40°C
–30°C

2.4

2.2

2.0
5 10 15 20 25 30
Hours of service
FIGURE 14.10 Typical discharge characteristics of Li/SO battery at various
2
temperatures, C/30 discharge rate.

120

100
20 to 55°C
Percent of rated capacity 60 –20°C
80

40

20 –40°C –30°C

C C C C C C C C C C C C C
1000 500 300 200 100 50 30 20 10 5 3 2
Discharge current
FIGURE 14.11 Performance of Li/SO batteries as a function of discharge tem-
2
perature and load.

The service life of a battery at a given current load can be estimated by dividing the current
(in amperes) by the weight or volume of the battery. This value is located on the ordinate, and the
service life, at a specific current and temperature, is read on the abscissa.
The weight or volume of a battery needed to deliver a required number of hours of service at a
specified current load can be estimated by locating a point on the curve corresponding to the required