(2) Regarding the temperature of the rechargeable
battery.
The temperatures for rechargeable batteries are
as shown in the Table 3, and batteries that have
become hot should be cooled for a while before being
recharged.
Rechargeable
Temperatures at which the battery
batteries
BSL1815 /
BSL1830C
(3) Regarding recharging time (At 68°F (20°C))
Table 4 Charging time
Charger
Battery
BSL1815
BSL1830C
NOTE
The recharging time may vary according to the
ambient temperature.
4. Disconnect battery charger from the receptacle.
CAUTION
Do not pull the plug out of the receptacle by
pulling on the cord.
Make sure to grasp the plug when removing from
receptacle to avoid damaging cord.
5. Remove the battery from the battery charger.
Supporting the battery charger with hand, pull out the
battery from the battery charger.
NOTE
Be sure to pull out the battery from the battery 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.
Table 3
can be recharged
32°F–122°F
(0°C–50°C)
UC18YSL3
Approx. 15 min
Approx. 30 min
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
● When the battery charger has been continuosly
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.
● 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 charge indicator
lamp of the charger lights for 0.3 seconds, does
not light for 0.3 seconds (off for 0.3 seconds). In
such a case, fi rst let the battery cool, then start
charging.
● When the charge indicator lamp fl ickers (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.
HOW TO RECHARGE USB DEVICE
WARNING
○ Prior to use, check the connecting USB cable for
any defect or damage.
Using a defective or damaged USB cable can
cause smoke emission or ignition.
○ When the product is not being used, cover the
USB port with the rubber cover.
Buildup of dust etc. in the USB port can cause
smoke emission or ignition.
NOTE
○ The time required for charging will be longer when
a USB device and battery are being simultaneously
charged.
○ There may be an occasional pause during USB
recharging.
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