Important Charging Notes - DeWalt DC300 Instruction Manual

together with two fast blinks followed by a pause. This indicates
that the power souce is out of limits.
BAD BATTERY
The charger can detect a weak or damaged battery. The three red
lights will flash together with rapid blinking. The battery will no
longer charge and should be returned to a service center or a col-
lection site for recycling.
BAD CHARGER
The charger will detect if it is not functioning properly. The three red
lights will flash together with one fast blink followed by a long
blink. The charger will no longer work and should be returned to an
authorized service center or replaced.
LEAVING THE BATTERY IN THE CHARGER
The charger and battery pack can be left connected with the red
lights glowing indefinitely. The charger will keep the battery pack
fresh and fully charged. This charger features an automatic tune-up
mode which equals or balances the individual cells in the battery
pack to allow it to function at peak capacity. Battery packs should
be tuned up weekly or whenever the battery no longer delivers the
same amount of work. To use the automatic tune-up mode, place
the battery pack in the charger and leave it for at least 8 hours.

Important Charging Notes

1. Longest life and best performance can be obtained if the bat-
tery pack is charged when the air temperature is between 65°F
and 75°F (18°- 24°C). DO NOT charge the battery pack in an
air temperature below +40°F (+4.5°C), or above +105°F
(+40.5°C). This is important and will prevent serious damage to
the battery pack.
2. The charger and battery pack may become warm to touch
while charging. This is a normal condition, and does not indi-
cate a problem. To facilitate the cooling of the battery pack after
use, avoid placing the charger or battery pack in a warm envi-
ronment 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 limit-
ed to, steel wool, aluminum foil, or any buildup of metallic par-
ticles should be kept away from charger cavities. Always
unplug the charger from the power supply when there is no bat-
tery 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.
CAUTION: Never attempt to open the battery pack for any rea-
son. If the plastic housing of the battery pack breaks or cracks,
return to a service center for recycling.
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