HIKOKI DS18DE, Handling Instructions Manual, Page: 10 / 224

10
English
● Regarding the temperatures and charging time of the
battery.
The temperatures and charging time will become as
shown in
Table 2
Table 2
Model UC18YFSL
Type of battery Li-ion
Charging voltage 14.4–18 V
Temperatures at which the battery
can be recharged
0°C–50°C
Charging time for
battery capacity,
approx.
(At 20°C)
1.5 Ah 22 min
2.0 Ah 30 min
2.5 Ah 35 min
3.0 Ah 45 min
4.0 Ah 60 min
5.0 Ah 75 min
6.0 Ah 90 min
8.0 Ah 120 min
Multi
volt
battery
1.5 Ah (  2 unit) 45 min
2.5 Ah (

2 unit) 75 min
4.0 Ah (  2 unit) 120 min
Number of battery cells 4–10
Weight 0.5 kg
Check the recharging time for the large current capacity
MultiVolt battery.
NOTE
The recharging time may vary according to the ambient
temperature and power source voltage.
CAUTION
When the battery charger has been continuously used,
the battery charger will be heated, thus constituting
the cause of the failures. Once the charging has been
completed, give 15 minutes rest until the next charging.
4. Disconnect the charger’s power cord from the
receptacle.
5. Hold the charger fi rmly and pull out the battery.
NOTE
Be sure to pull out the battery from the charger after use,
and then keep it.
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 fi rst and second time. This is a temporary
phenomenon, 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.
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 or lights
for 1 second, does not light for 0.5 seconds (o ff for
0.5 seconds). In such a case, fi rst let the battery cool,
then start charging.
○ When the pilot lamp fl ickers in red (at 0.2-seconds
intervals), check for and take out any foreign objects in
the charger’s battery connector. If there are no foreign
objects, it is probable that the battery or charger is
malfunctioning. Take it to your authorized Service
Center.
<UC18YSL3>
1. Connect the charger’s power cord to the receptacle.
When connecting the plug of the charger to a receptacle,
the charge indicator lamp will blink in red (At 1- second
intervals).
2. Insert the battery into the charger.
Firmly insert the battery into the charger as shown in
Fig. 4
.
3. Charging
When inserting a battery in the charger, the charge
indicator lamp will blink in blue.
When the battery becomes fully recharged, the charge
indicator lamp will light up in green. (See
Table 3
)
(1) Charge indicator lamp indication
The indications of the charge indicator lamp will be as
shown in
Table 3
, according to the condition of the
charger or the rechargeable battery.
Table 3
Charger
status
Status of indicator
lamp
Indication meaning
Before
charging
ON/OFF at 0.5 sec.
intervals (RED)
Plugged into power
source *1
While
charging
Lights for 0.5 sec.
at intervals of 1 sec.
(BLUE)
Charged at less than
50%
Lights for 1 sec. at
intervals of 0.5 sec.
(BLUE)
Charged at less than
80%
Lights continuously
(BLUE)
Charged at more
than 80%
Charging
complete
Lights continuously
(GREEN)
(Continuous buzzer
sound: about 6 sec.)
Overheat
standby
ON/OFF at 0.3 sec.
intervals (RED)
Battery overheated.
Unable to charge. *2
Charging
impossible
ON/OFF at 0.1 sec.
intervals (PURPLE)
(Intermittent buzzer
sound; about 2 sec.)
Malfunction in
the battery or the
charger *3
*1 If the red lamp continues to blink even after the charger
has been attached, check to con fi rm that the battery has
been fully inserted.
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