Charging Procedure; Important Charging Notes - DeWalt DC308 Instruction Manual

2. Long storage will not harm the battery pack or charger. Under proper conditions,
they can be stored for 5 years or more.
Charger
Your battery pack requires a 1 hour D WALT charger. Be sure to read all safety
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instructions before using your charger. Consult the chart on the back of this
manual for compatibility of chargers and battery packs.

Charging Procedure

1. Plug the charger into an appropriate outlet before inserting the battery pack.
2. Insert the battery pack into the charger. The charger is equipped with a three-light
fuel gauge that will blink according to the state of charge of the battery pack.
3. The completion of charge is indicated by the three red lights remaining ON
continuously. The pack is fully charged and may be used at this time or left
on the charger.
Charger Diagnostics
This charger is designed to detect certain problems that can arise with the battery
packs or the charger. Problems are indicated by the three red lights flashing together
in different patterns.
PROBLEM POWERLINE
When the charger is used with some portable power sources such as generators or
sources that convert DC to AC, the charger may temporarily suspend operation. The
three red lights will flash 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 collection 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 battery pack is charged
when the air temperature is between 18°- 24°C (65°F and 75°F). DO NOT charge
the battery pack in an air temperature below +4.5°C (+40°F), or above +40.5°C
(+105°F). 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. 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 tem-
perature is approximately 18°- 24°C (65°F - 75°F).
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.
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