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(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.
Table 3 Recharging of batteries that have become hot
NOTE:
The charging time may vary according to temperature and power source voltage.
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.
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.
●
If the battery is recharged when it is warm due to battery use or exposure to sunlight, the pilot lamp may
light in green.
The battery will not be recharged. In such a case, let the battery cool before charging.
〈UC18YG〉
1. Connect the charger power cord to the receptacle
Connecting the power cord will turn on the charger.
2. Insert the battery into the charger
Insert the battery into the battery charger. Make sure it contacts the bottom of the battery 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.
The pilot lamp goes off to indicate that the battery is fully charged.
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 tight and pull out the battery
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, 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.
Rechargeable batteries UC14YFA / UC24YFA UC18YRL
Ni-Cd type batteries 23°F – 131°F (–5°C – 55°C)
Ni-MH type batteries 32°F – 113°F (
0°C – 45°C) 23°F – 122°F (–5°C – 50°C)
Li-ion type batteries x 32°F – 122°F (
0°C – 50°C)