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○ 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.
Indications of the pilot lamp (RED)
ON/OFF at 0.5 sec.
Before
intervals
charging
While
Lights continuously
charging
ON/OFF at 0.5 sec.
Charging
intervals
complete
Lights for 1 sec. at
Overheat
intervals of 0.5 sec.
standby
ON/OFF at 0.1 sec.
Charging
intervals
impossible
*
Charging will commence when battery cools
(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.
Table 3 Recharging ranges of batteries
Rechargeable
batteries
BSL1820M
(3) Regarding recharging time (At 68°F (20°C))
Table 4 Charging time
Charger
Battery
BSL1820M
NOTE
The charging time may vary according to temperature
and power source voltage.
12
Table 2
Plugged into power
source
—
—
Battery overheated.
Unable to charge.*
Malfunction in
the battery or the
charger
Temperatures at which the
battery can be recharged
32°F–122°F
(0°C–50°C)
UC18YKSL
Approx. 60 min
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.
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 pilot lamp of
the charger lights for 1 second, does not light for
0.5 seconds (off for 0.5 seconds).
The battery will not be recharged. In such a case,
let the battery cool before charging.
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