Hitachi WH 9DMR Handling Instructions Manual page 45

(2) Regarding the temperatures 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 2 Recharging ranges of batteries
Charger
Rechargeable batteries
Ni-Cd batteries
Ni-MH batteries
4. Disconnect the charger's power cord from the
receptacle
5. 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.
CAUTION
If the battery is charged while it is heated because it
has been left for a long time in a location subject to
direct sunlight or because the battery has just been
used, the pilot lamp of the charger lights up green. In
such a case, first let the battery cool, then start
charging.
When the pilot lamp flikers in red quickly (at 0.2-
second intervals), check for and take out any foreign
objects in the charger's battery installation hole. If
there are no foreign objects, it is probable that the
battery or charger is malfunctioning. Take it to your
Authorized Service Center.
Table 3
Blinks
Before
charging
While Lights
charging
Blinks
Charging
complete
Blinks
Overheat
standby
(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.
UC14YFA UC18YRL
UC24YFA UC18YFL
–5°C – 60°C –5°C – 55°C
0°C – 45°C –5°C – 50°C
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 1 second. Does not light
for 0.5 seconds. (off for 0.5 seconds)
Since the built-in micro computer takes about 3
seconds to confirm that the battery being charged
with UC14YFA, UC24YFA, UC18YRL and UC18YFL
are taken out, wait for a minimum of 3 seconds
before reinserting it to continue charging. If the battery
is reinserted within 3 seconds, the battery may not
be properly charged.
〈 UC18YGH 〉
Before using the impact driver or impact wrench, charge
the battery as follows.
1. Connect the charger's power cord to the receptacle.
When connecting the plug of the charger to a
receptacle, the 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.
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, the pilot
lamp will light up continuously in red.
When the battery becomes fully recharged, the pilot
lamp will blink in red (At 1-second intervals).
(See Table 3)
(1) Pilot lamp indication
The indications of the pilot lamp will be as shown
in Table 3, according to the condition of the charger
or the rechargeable battery.
Battery overheated. Unable to charge.
(Charging will commence when
battery cools)
Table 4
Rechargeable
batteries
Ni-Cd batteries
Ni-MH batteries
4. Disconnect the charger's power cord from the
receptacle.
5. Hold the charger firmly and pull out the battery.
English
Temperatures at which
the battery can be recharged
–5°C — 55°C
–5°C — 50°C
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