Charging Procedure; Important Charging Notes - Stanley FMC640 FatMAX Instruction Manual

CHARGING PROCEDURE

Stanley FatMax chargers are designed to charge Stanley
FatMax battery packs in 30-60 minutes depending on the
pack being charged.
1. Plug the charger (Fig. B) into an appropriate outlet
before inserting the battery pack.
2. Insert the battery pack into the charger.
3. The LED will flash indicating that the battery is
being charged.
4. The completion of charge is indicated by the 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
This charger is designed to detect certain problems that can arise with the battery
packs or the power source. Problems are indicated by one LED flashing in
different patterns.
BAD BATTERY
The charger can detect a weak or damaged battery. The LED flashes in the
pattern indicated on the label. If you see this bad battery blink pattern, do not
continue to charge the battery. Return it to a service center or a collection site for
recycling.
HOT/COLD PACK DELAY
When the charger detects a battery that is excessively hot or excessively cold, it
automatically starts a Hot/Cold Pack Delay, suspending charging until the battery has
normalized. After this happens, the charger automatically switches to the Pack
Charging mode. This feature ensures maximum battery life. The light flashes in the
pattern indicated on the label.
LEAVING THE BATTERY IN THE CHARGER
The charger and battery pack can be left connected with the LED 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 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. 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.
B
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