DeWalt DW983 - Battery Charging and Tool Setup; Battery Charging Notes and Troubleshooting; Installing and Removing Battery Packs; Variable Speed Switch Operation

2. Insert the battery pack into the charger making sure the pack is fully
seated in the charger. The red light will blink and the charger will
beep once indicating the charging process has started.
3. The battery pack will be fully charged in less than 15 minutes under
most conditions. This will be indicated by the red light remaining ON
and 3 beeps. The pack is fully charged and may be used at this time
or left in the charger.
4. WEAK BATTERY PACKS: The 15 minute charger can also detect
a weak battery. Such batteries are still usable but should not be
expected to perform as much work. In such cases, about 10
seconds after battery 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.
ALL CHARGERS
Leaving the battery pack in the charger: When the red light remains
ON, the charger has switched to its "equalize charge" mode which
lasts approximately 4 hours, after which the charger will switch to
"maintenance charge" mode. The battery pack can be removed at
any time during these charge cycles, but will only be fully charged if the
red light is continuously ON. 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. 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.
puportant Charging Notes
. Longest life and best performance can be obtained if the battery
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 indicate a
problem.
3. If the battery pack does not charge properly — (1) Check current at
receptacle by plugging in a lamp or other appliance, (2) Check to see
if receptacle is connected to a light switch which turns power off
when you turn out the lights. (3) Move charger and battery pack toa
location where the surrounding air temperature is approximately
65°F - 75°F (18°- 24°C). (4) If charging problems persist, take or
send 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.
TROUBLE INDICATORS: These chargers are designed to detect
certain problems that can arise with battery packs which would be
indicated by the red light flashing at a fast rate (and continuous beeping
for 15 Minute Chargers). If this occurs, re-insert battery pack. If
problem persists, try a different battery pack to determine 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 for recycling. If the
new battery pack elicits the same trouble indication as the original,
have the charger tested at an authorized service center.
Operation
Installing and Removing the Battery Pack
NOTE: Make sure your battery pack is fully charged.
To install the battery pack into the tool handle, align the base of the
tool with the notch inside the tool’s handle (FIG. 1) and slide the
battery pack firmly into the handle until you hear the lock snap into
place as shown in FIG. 1A.
To remove the battery pack from the tool, press the release buttons
and firmly pull the battery pack out of the tool handle. Insert it into
the charger as described in the charger section of this manual.
Variable Speed Switch (Fig. 2)
To turn the tool on, squeeze the trigger switch. To turn the tool off,
release the trigger switch. Your tool is equipped with a brake. The