Hitachi Koki DS 9DVB2 Mode D'emploi page 10

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specified into the charger and some of them may
light up the pilot lamps. However, you are
requested to exercise utmost caution not to charge
batteries other than specified ones because these
can not only be charged but also such actions can
result in the malfuntion of chargers.
2. Connect the charger power cord to the receptacle.
Connecting the power cord will turn on the charger
(the pilot lamp lights up).
CAUTION:
If the pilot lamp does not light up, pull out the
power cord from the receptacle and check the
battery mounting condition.
About 1 hour is required to fully charge the battery
at a temperature of about 20°C. The pilot lamp goes
off to indicate that the battery is fully charged.
The battery charging time becomes longer when a
temperature is low or the voltage of the power
source is too low.
When the pilot lamp does not go off even if more
than two hours have elapsed after starting of the
charging, stop the charging and contact your
HITACHI AUTHORIZED SERVICE CENTER.
CAUTION:
If the battery is heated due to direct sunlight,
etc., just after operation, the charger pilot lamp
may not light up. At that time, cool the battery
first, then start charging.
3. Disconnect the charger power cord from the
receptacle.
4. Hold the charger firmly and pull out the battery.
NOTE:
After charging, pull out batteries from the charger
first, and then keep the batteries properly.
Regarding electric discharge in case of new
batteries, etc.
As the internal chemical substance of new batteries
and batteries that have not been used for an
extended period is not activated, the electric
discharge might be low when using them the first
and second time. This is a temporary phenomenon,
Table 1
Before Blinks
charging (RED)
While Lights
charging (RED)
Charging Blinks
complete (RED)
Charging Flickers
impossible (RED)
Charging Lights
impossible (GREEN)
9
and normal time required for recharging will be
restored by recharging the batteries 2 – 3 times.
How to make the batteries perform longer
(1) Recharge the batteries before they become
completely exhausted.
When you feel that the power of the tool becomes
weaker, stop using the tool and recharge its battery.
If you continue to use the tool and exhaust the
electric current, the battery may be damaged and
its life will become shorter.
(2) Avoid recharging at high temperatures.
A rechargeable battery will be hot immediately after
use. If such a battery is recharged immediately after
use, its internal chemical substance will deteriorate,
and the battery life will be shortened. Leave the
battery and recharge it after it has cooled for a while.
〈 UC14YFA/UC24YFA 〉
Before using the driver drill, charge the battery as follows.
1. Connect the charger's power cord to a receptacle.
When the power cord is connected, the charger's
pilot lamp will blink in red. (At 1-second intervals).
2. Insert the battery into the charger.
Firmly insert the battery into the charger till it
contacts the bottom of the charger and checking
the polarities as shown in Fig. 4.
CAUTION:
If the batteries are inserted in the reverse direction,
not only recharging will become impossible, but it
may also cause problems in the charger such as
a deformed recharging terminal.
3. Charging
When inserting a battery in the charger, charging
will commence and the pilot lamp will light
continuously in red.
When the battery becomes fully recharged, the pilot
lamp will blink in red (At 1-second intervals.) (See
Table 1).
(1) Pilot lamp indication
The indications of the pilot lamp will be as shown
in Table 1, according to the condition of the charger
or the rechargeable battery.
Indications of the pilot lamp
Lights for 0.5 seconds. Does not light for 0.5
seconds. (off for 0.5 seconds)
Lights continuously
Lights for 0.5 seconds. Does not light for 0.5
seconds. (off for 0.5 seconds)
Lights for 0.1 seconds. Does not light for 0.1
seconds. (off for 0.1 seconds)
Lights continuously
Malfunction in the bat-
tery or the charger.
The battery temperature is
high, making recharging
impossible.