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(3) Battery's deterioration characteristics
All batteries are consumables. A battery gradually deteriorates and its capacity decreases
over time and with use.
The extent to which the capacity decreases by deterioration depends on the use condi-
tions. For a nickel metal hydride battery, it's capacity will decrease to approximately 60%
of that of a new battery after 300 charge/discharge cycles, under normal use.
Even if a battery is not used, when it is stored over a long period of time, it will deteriorate
and its capacity will decrease.
When you are using multiple batteries, alternate between the batteries.
The extent of the deterioration of a nickel metal hydride battery can be checked after charg-
ing is done, by pushing the indicator switch.
Indicator
Switch
Off
The 5th lamp does not turn
on even after charging is
complete.
The capacity has
deteriorated to less than
80%
The 4th and 5th lamps do not
turn on even after charging is
complete.
The capacity has
deteriorated to less than
60%
On
8
Flashing
57
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