2.The charger and battery pack may become warm to touch while charging. This is a normal condition, and does not indicate a problem. To facilitate the cooling of the battery pack after use, avoid placing the charger or battery pack in a warm environment such as in a metal shed, or an uninsulated trailer.
3.If the battery pack does not charge properly:
a.Check current at receptacle by plugging in a lamp or other appliance.
b.Check to see if receptacle is connected to a light switch which turns power off when you turn out the lights.
c.Move charger and battery pack to a location where the surrounding air temperature is approximately 65°F - 75°F (18°- 24°C).
d.If charging problems persist, take the tool, battery pack and charger to your local service center.
4.The battery pack should be recharged when it fails to produce sufficient power on jobs which were easily done previously. DO NOT CONTINUE to use under these conditions. Follow the charging procedure. You may also charge a partially used pack whenever you desire with no adverse affect on the battery pack.
5.Foreign materials of a conductive nature such as, but not limited to, steel wool, aluminum foil, or any buildup of metallic particles should be kept away from charger cavities. Always unplug the charger from the power supply when there is no battery pack in the cavity. Unplug charger before attempting to clean.
6.Do not freeze or immerse charger in water or any other liquid.
WARNING: Shock hazard. Do not allow any liquid to get inside charger.Never attempt to open the battery pack for any reason. If the plastic housing of the battery pack breaks or cracks, return to a service center for recycling.
12VOLT MAX* INSTALLING AND REMOVING THE BATTERY PACK FROM THE POWER UNIT Always ensure the forward/reverse slider (7) is in the center position 
when installing and removing batteries. | B |
WARNING: Make certain the lockbutton is engaged to prevent switch actuation before removing or installing battery.
TO INSTALL BATTERY PACK: Insert battery pack into the Power Unit, until an audible click is heard as shown in Figure B. Make sure the battery pack is fully seated and latched into position.
TO REMOVE BATTERY PACK: Depress the battery release button
(3)as shown in Figure C and pull battery pack out of the Power Unit. 
C 
20VOLT MAX** BATTERY PACK (BDCDMT120) |
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CHARGING, INSTALLING, AND REMOVING |
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20VOLT MAX** CHARGING PROCEDURE |
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Black & Decker chargers are designed to charge Black & Decker |
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battery packs in |
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1. Plug the charger (4) into an appropriate outlet before inserting the |
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battery pack (5). |
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2. Insert the battery pack into the charger as shown in Figure D. |
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3. The green LED will flash indicating that the battery is being | D |
charged. | |
4. The completion of charge is indicated by the green LED remaining on continuously. The | |
pack is fully charged and may be used at this time or left on the charger. | |
Recharge discharged batteries as soon as possible after use or battery
life may be greatly diminished. For longest battery life, do not discharge batteries fully. It is recommended that the batteries be recharged after each use.
CHARGER DIAGNOSTICS
8