
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 UC18YKSL battery charger, 
be sure to read all instructions and cautionary statements 
on it, the battery and in this manual.
REMEMBER: USE ONLY metabo HPT 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 
fire.
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).
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) such as inside metal box or car.
12. NEVER expose the battery or battery charger to rain 
or wet conditions.
13. ALWAYS operate charger on standard household 
electrical power (120 volts). Using the charger on any 
other voltage may overheat and damage the charger.
14. ALWAYS wait at least 15 minutes between charges to 
avoid overheating the charger.
15. 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.). 
2. Do not pierce battery with a sharp object such as a 
nail, strike with a hammer, step on, throw or subject 
the battery to severe physical shock.
3. Do not use an apparently damaged or deformed 
battery.
4. Do not use the battery in reverse polarity.
5. Do not connect directly to an electrical outlets or car 
cigarette lighter sockets.
6. Do not use the battery for a purpose other than those 
specified.
7. If the battery charging fails to complete even when a 
specified recharging time has elapsed, immediately 
stop further recharging.
8. Do not put or subject the battery to high temperatures 
or high pressure such as into a microwave oven, 
dryer, or high pressure container.
9. Keep away from fire immediately when leakage or foul 
odor are detected.
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English
000BookDS18DBFL2metabo.indb6000BookDS18DBFL2metabo.indb6 2018/09/2111:10:002018/09/2111:10:00