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MILWAUKEE LITHIUM-ION BATTERY PACK OPERATION
Fuel Gauge
Use the Fuel Gauge to determine the battery pack's
remaining run time. Press the Fuel Gauge button
to display the lights. The Fuel Gauge will stay lit for
two seconds.
Approximate Run
78-100%
Time Remaining
NOTE: If the Fuel Gauge
55-77%
doesn't appear to be
working, place the bat-
33-54%
tery pack on the charger
10-32%
and charge as needed.
C o m p a r e d t o N i C d
<10% - 1st light will fl ash 4X
0% - 1st light will fl ash 8X
b a t t e r y p a c k t y p e s ,
MILWAUKEE Lithium-Ion battery packs deliver
fade-free power for their entire run time. The tool
will not experience a slow, gradual loss of power
as you work. To signal to you that the battery
pack is at the end of its run time and needs to be
charged, power to the tool will drop quickly. When
this happens, remove the tool from the workpiece
and charge the battery pack as needed.
NOTE: Immediately after using the battery pack,
the Fuel Gauge may display a lower charge than it
will if checked a few minutes later. The battery cells
"recover" some of their charge after resting.
Battery Pack Protection
To protect itself from damage and extend its life,
the battery pack's intelligent circuit monitors current
draw and temperature.
In extremely high torque, binding, stalling, and short
circuit situations, the battery pack will turn OFF the
tool if the current draw becomes too high. In these
situations, the tool may "buzz" for about 2 seconds
before it turns OFF. To prevent the tool from turning
OFF, immediately reduce pressure on the applica-
tion or release the trigger. If the tool does turn off,
the Fuel Gauge lights will fl ash 8 times. Release
the trigger to reset.
Under extreme circumstances, the internal tem-
perature of the battery could become too high. If
this happens, the battery pack will shut off. When
the Fuel Gauge button is pressed, the lights will
fl ash alternatingly. Allow the battery pack to cool.
The battery is ready for use when the Fuel Gauge
displays the remaining run time when the Fuel
Gauge button is pressed.
Cold Weather Operation
MILWAUKEE Lithium-Ion battery packs are de-
signed to operate in temperatures below freezing.
When the battery pack is too cold, it may need to
warm up before normal use. Put the battery on a
tool and use the tool in a light application. It may
"buzz" for a short time until it warms up. When the
buzzing stops, use the tool normally.
Maintenance and Storage
Do not expose your battery pack or cordless tools
to water or rain, or allow them to get wet. This could
damage the tool and battery pack. Do not use oil
or solvents to clean or lubricate your battery pack.
The plastic casing will become brittle and crack,
causing a risk of injury.
Store battery packs at room temperature away from
moisture. Do not store in damp locations where cor-
rosion of terminals may occur. As with other battery
pack types, permanent capacity loss can result if
the pack is stored for long periods of time at high
temperatures (over 120° F). MILWAUKEE Lithium-
Ion battery packs maintain their charge during
storage longer than other battery pack types. After
about a year of storage, charge the pack as normal.
Disposing of MILWAUKEE Li-Ion Battery Packs
MILWAUKEE Lithium-Ion battery packs are more
environmentally friendly than some other types of
power tool battery packs (e.g., nickel-cadmium).
Always dispose of your battery pack according to
federal, state and local regulations. Contact a recy-
cling agency in your area for recycling locations.
Even discharged battery packs contain some en-
ergy. Before disposing, use electrical tape to cover
the terminals to prevent the battery pack from short-
ing, which could cause a fi re or explosion.
WARNING
To reduce the risk of in-
jury or explosion, never burn or incinerate
a battery pack even if it is damaged, dead or
completely discharged. When burned, toxic
fumes and materials are created.
RBRC Battery Recycling Seals
The RBRC™ Battery Recycling Seals (see "Sym-
bology") on your tool battery packs indicate that
MILWAUKEE has arranged for the recycling of
that battery pack with the Rechargeable Battery
Recycling Corporation (RBRC). At the end of your
battery pack's useful life, return the battery pack to
a MILWAUKEE Branch Offi ce/Service Center or the
participating retailer nearest you. For more informa-
tion, visit the RBRC web site at www.rbrc.org.
4
CHARGER OPERATION
W A R N I N G
C h a r g e
MILWAUKEE 28 Volt Lithium-Ion battery
packs in MILWAUKEE 28 Volt Li-Ion Battery
Chargers. Other types of batteries may cause
personal injury and damage.
When to Charge the Battery Packs
Remove the battery pack from the tool for
charging when convenient for you and your job.
MILWAUKEE battery packs do not develop a
"memory" when charged after only a partial dis-
charge. It is not necessary to run down the battery
pack before placing it on the charger.
• Use the Fuel Gauge to determine when to charge
your MILWAUKEE Li-Ion battery pack.
• You can "Top-Off" your battery pack's charge
before starting a big job or long day of use.
• The only time it is necessary to charge the
MILWAUKEE Lithium-Ion battery pack is when
the pack has reached the end of its charge. To
signal the end of charge, power to the tool will drop
quickly, allowing you just enough power to fi nish
making a cut, drilling a hole, or driving a fastener.
Charge the battery pack as needed.
How to Charge the Battery Packs
Place the battery pack onto the bay by sliding the
pack on from the top of the bay. The red light will
turn on, either fl ashing (pack is too hot or cold) or
continuous (pack is charging).
• A fully discharged pack with an internal tempera-
ture between 32°F and 150°F will charge in about
1-Hour.
• Heavily cycled battery packs may take longer to
charge completely.
• The Fuel Gauge lights on the battery pack are
displayed as the pack is being charged, indicating
how fully charged the pack is.
• After charging is complete, the continuous green
light will turn on and the fuel gauge will turn off.
• The charger will keep the battery pack fully
charged if it is left on the charger.
• If the light indicator fl ashes red and green, check
that the battery pack is fully seated into the bay.
Remove the pack and reinsert. If the problem
persists, contact a MILWAUKEE service facility.
• If the light indicator does not come on, check
that the battery pack is fully seated into the bay.
Remove the pack and reinsert. If the light indicator
still does not come on, contact a MILWAUKEE
service facility.
Charging Hot or Cold Battery Packs
The Red fl ashing indicator light on the charger indi-
o n l y
cates that the battery pack temperature is outside
the charging range. Once the pack is within the
acceptable range, normal charging will take place
and the red light will be continuous. Hot or cold
battery packs may take longer to charge.
Battery Pack
Red Charger
Temperature
Indicator Light
Too Hot / Too Cold Flashing
Normal Range
Continuous
Powering the Charger with an Inverter or
Generator
The charger will operate with most generators and
inverters rated at 300 Watts or higher.
Maintenance and Storage
Store your charger in a cool, dry place.
As a general practice, it is best to unplug battery
chargers and remove battery packs when not in
use. No battery pack damage will occur, however, if
the charger and battery pack are left plugged in.
WARNING
To reduce the risk of in-
jury, always unplug the charger and remove
the battery pack from the charger before
performing any maintenance. Never disas-
semble the battery pack or charger. Contact
a MILWAUKEE service facility for ALL repairs.
To reduce the risk of injury and damage, never
immerse your battery pack or charger in liquid
or allow a liquid to fl ow inside them.
Cleaning
Clean out dust and debris from charger vents and
electrical contacts by blowing with compressed air.
Use only mild soap and a damp cloth to clean the
battery pack and charger, keeping away from all elec-
trical contacts. Certain cleaning agents and solvents
are harmful to plastics and other insulated parts.
Some of these include gasoline, turpentine, lacquer
thinner, paint thinner, chlorinated cleaning solvents,
ammonia and household detergents containing am-
monia. Never use fl ammable or combustible solvents
around battery packs, charger, or tools.
Repairs
The MILWAUKEE Li-Ion charger has no service-
able parts.
5
Charging
Status
Not charging
Normal charging
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