DATAMAN S4 MANUAL
<$IKEY;INFO>INFO<$&INFO> KEY 35
we have seen is that there is a low but constant
rate of failure in
Nicad cells which is not dependent on age. New
ones seem to fail
occasionally - as often as old ones. They seem to
do better if worked
hard, i.e. charged and discharged quickly.
The symptoms of a defective battery is that it does
not reach normal
output voltage. Nicad cells usually fail by going
short. If one of
the seven Nicads cells is short, the battery will
charge to temperature
cut-off but remain below 9 volts, because it only
has 6 cells instead
of 7. The combination of high temperature and
low voltage can be
observed in the INFO display. The battery should
be replaced as
soon as possible.
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