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If the input rating of a battery charger is given in watts
rather than in amperes, the corresponding ampere
rating is to be determined by dividing the wattage
rating by the voltage rating–for example:
1,250 watts
125 volts
9. Do not operate battery charger with damaged cord or
plug-replace them immediately.
10. Do not operate battery charger if it has received a
sharp blow, been dropped, or otherwise damaged in
any way; take it to a qualifi ed serviceman.
11. Do not disassemble battery charger; take it to a
qualifi ed serviceman when service or repair is
required. Incorrect reassembly may result in a risk of
electric shock or fi re.
12. To reduce risk of electric shock, unplug charger from
receptacle before attempting any maintenance or
cleaning. Removing the battery will not reduce this
risk.
IMPORTANT SAFETY INSTRUCTIONS
FOR USE OF THE BATTERY AND
BATTERY CHARGER
You must charge the battery before you can use the power
tool. Before using the model UC18YFSL battery charger,
be sure to read all instructions and cautionary statements
on it, the battery and in this manual.
CAUTION
USE ONLY HITACHI BATTERY TYPE BSL18
SERIES. OTHER TYPES OF BATTERIES MAY
BURST AND CAUSE INJURY!
Follow these instructions to avoid the risk of injury:
WARNING
Improper use of the battery or battery charger
can lead to serious injury. To avoid these injuries:
1. NEVER disassemble the battery.
2. NEVER incinerate the battery, even if it is damaged or
is completely worn out. The battery can explode in a
fi re.
3. NEVER short-circuit the battery.
4. NEVER insert any objects into the battery charger's
air vents. Electric shock or damage to the battery
charger may result.
5. NEVER charge outdoors. Keep the battery away
from direct sunlight and use only where there is low
humidity and good ventilation.
6. NEVER charge when the temperature is below 32°F
(0°C) or above 104°F (40°C).
= 10 amperes
Charging the battery at temperatures outside the
range of 32°F – 104°F (0°C – 40°C) may prevent
proper charging and reduce battery life.
7. NEVER connect two battery chargers together.
8. NEVER insert foreign objects into the hole for the
battery or the battery charger.
9. NEVER use a booster transformer when charging.
10. NEVER use an engine generator or DC power to
charge.
11. NEVER store the battery or battery charger in places
where the temperature may reach or exceed 104°F
(40°C).
12. ALWAYS operate charger on standard household
electrical power (120 volts). Using the charger on any
other voltage may overheat and damage the charger.
13. ALWAYS wait at least 15 minutes between charges to
avoid overheating the charger.
14. ALWAYS disconnect the power cord from its
receptacle when the charger is not in use.
CAUTION ON LITHIUM-ION BATTERY
To extend the lifetime, the lithium-ion battery equips with
the protection function to stop the output.
In the cases of 1 to 3 described below, when using this
product, even if you are pulling the switch, the motor may
stop. This is not the trouble but the result of protection
function.
1. When the battery power remaining runs out, the motor
stops.
In such case, charge it up immediately.
2. If the tool is overloaded, the motor may stop. In this
case, release the switch of tool and eliminate causes
of overloading. After that, you can use it again.
3. If the battery is overheated under overload work, the
battery power may stop.
In this case, stop using the battery and let the battery
cool. After that, you can use it again.
Furthermore, please heed the following warning and
caution.
WARNING
In order to prevent any battery leakage, heat generation,
smoke emission, explosion and ignition beforehand,
please be sure to heed the following precautions.
1. Make sure that swarf and dust do not collect on the
battery.
○ During work make sure that swarf and dust do not fall
on the battery.
○ Make sure that any swarf and dust falling on the power
tool during work do not collect on the battery.
○ Do not store an unused battery in a location exposed
to swarf and dust.
○ Before storing a battery, remove any swarf and dust
that may adhere to it and do not store it together with
metal parts (screws, nails, etc.).
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