Hitachi DN 10DY Instruction And Safety Manual page 15

3. Charging
When the battery is connected to the battery charger, charging will commence and
the pilot lamp will light in red. (See Table 2)
NOTE: If the pilot lamp does not light, pull out the plug from the receptacle and
check if the battery is properly mounted.
When the battery is fully charged, the pilot lamp will blink in red slowly. (At 1-second
intervals) (See Table 2)
(1) Pilot lamp indication
The indications of the pilot lamp will be as shown in Table 2, according to the condition
of the charger or the rechargeable battery.
Before
charging
While
charging
Charging
completed
Charging
impossible
Charging
impossible
(UC14YF / UC14YF2 only)
(2) Regarding the temperature of the rechargeable battery.
The temperatures for rechargeable batteries are as shown in the table below, and
batteries that have become hot should be cooled for a while before being recharged.
Table 3 Recharging of batteries that have become hot
Rechargeable batteries
EB 9
EB 9B
Indications of the pilot lamp
Blinks
Lights for 0.5 seconds. Does not light for
(RED)
0.5 seconds. (off for 0.5 seconds)
Lights
Lights continuously
(RED)
Lights for 0.5 seconds. Does not light for
Blinks
0.5 seconds. (off for 0.5 seconds)
(RED)
Lights for 0.1 seconds. Does not light for
Flickers
0.1 seconds. (off for 0.1 seconds)
(RED)
I I I I I I I I I I I I
Lights Lights continuously
(GREEN)
Temperatures at which the battery can be recharged
23°F—104°F (–5°C—40°C)
23°F—140°F (–5°C—60°C)
Table 2
Malfunction in the
battery or the charger
The battery temperature
is high, making recharg-
ing impossible.
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