Important Charging Notes - DeWalt DW077 Manual De Instrucciones

mine if the charger is OK. If the new pack charges correctly, then the
original pack is defective and should be returned to a service center
or other collection site for recycling. If the new battery pack elicits the
same trouble indication as the original, have the charger tested at
an authorized service center.
HOT/COLD PACK DELAY
Some chargers have a Hot/Cold Pack Delay feature: when the
charger detects a battery that is hot, it automatically starts a Hot
Pack Delay, suspending charging until the battery has cooled. After
the battery has cooled, the charger automatically switches to the
Pack Charging mode. This feature ensures maximum battery life.
The red light flashes long, then short while in the Hot Pack Delay
mode.
PROBLEM POWER LINE
Some chargers have a Problem Power Line indicator. When the
charger is used with some portable power sources such as genera-
tors or sources that convert DC to AC, the charger may temporarily
suspend operation, flashing the red light with two fast blinks fol-
lowed by a pause. This indicates the power source is out of limits.
LEAVING THE BATTERY PACK IN THE CHARGER
The charger and battery pack can be left connected with the red
light glowing indefinitely. The charger will keep the battery pack
fresh and fully charged.
NOTE: A battery pack will slowly lose its charge when kept out of
the charger. If the battery pack has not been kept on maintenance
charge, it may need to be recharged before use. A battery pack
may also slowly lose its charge if left in a charger that is not plugged
into an appropriate AC source.
WEAK BATTERY PACKS: Chargers can also detect a weak bat-
tery. Such batteries are still usable but should not be expected to
perform as much work. In such cases, about 10 seconds after bat-
tery insertion, the charger will beep rapidly 8 times to indicate a
weak battery condition. The charger will then go on to charge the
battery to the highest capacity possible.

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 sur-
rounding 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. Under certain conditions, with the charger plugged into the
power supply, the exposed charging contacts inside the charger
can be shorted by foreign material. Foreign materials of a
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