Quantcast Figure 12-7. Comparison of Discharge Characteristics.

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TM 9-8000
Figure 12-7. Comparison of Discharge Characteristics.
b.  Nickel Iron.  This is a battery of rugged
d. Silver Zinc. This battery is the best high-rate
construction, used for many years for heavy cycling
have  an  exceptionally  long  cycle  life.
service  to  provide  reliable,  long-life  service  in
shortcomings are expected to be improved in the near
applications such as electric industrial trucks and railway
cars. The battery may have limited use in certain tank-
automotive applications. Charging problems occur due
e.  Silver Cadmium.  This battery has similar
to high over voltage and performance is poor at low
construction to the silver zinc, but has lower cell voltage
and more moderate discharge rate. It is similar in cost to
c. Nickel Zinc. This battery has received attention
the silver zinc, but better in cycle service due to its
only in recent years. It is still in the development stage.
cadmium electrode. This battery, as well as the silver
Problems to be overcome are low nickel plate capacity,
zinc, presently is used for space satellite applications,
separator deterioration, and poor zinc cycle life.  With
and possibly could have future use in tank-automotive
added improvements it could become competitive with
silver-zinc types in many applications.
Protection from the elements is beneficial not only to the
12-10.  Battery Installation Considerations.  The
operation of the battery itself, but can be the means to
design of a battery installation will vary with the type of
prevent unforeseen accidents. For example, if saltwater
vehicle. There are, however, certain design features that
comes in contact with the positive plates of a damaged
can be applied to all vehicles used in a tank-automotive
lead-acid battery, it will produce chlorine gas.  Proper
design will avoid the possibility of such an occurrence.
Also, provisions for periodic cleaning of the battery
a.  The battery always should be mounted in a
installation always should be made.
location that is clean and protected from accumulations
of mud, dust, and excess moisture.


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