Under extreme circumstances, the internal tem-
perature of the battery could become too high. If
this happens, the fuel gauge lights will flash in an
alternating pattern and the product will not run. Allow
the battery to cool down.
Fuel Gauge
Lights
Diagnosis
Lights 1 - 4
Remaining
Solid
run time
1 Light,
Less than
flashing slowly
10% run time
left
1 Light,
End of
flashing quickly
discharge
Lights 1-4,
Current draw
flashing quickly
too high
Lights 1&3 /
Battery
2&4, flashing
temperature
alternatingly
too high
Cold Weather Operation
MILWAUKEE Li-Ion battery packs are designed 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 product and
use the product in a light application.
It may "buzz" for a short time until it warms up. When
the buzzing stops, use the tool normally.
Transport
The regulations pertaining to the transport of Li-Ion
batteries are affected by whether the battery is trans-
ported in a personal vehicle or offered for shipment
via a commercial carrier. Always ship Li-Ion batteries
in accordance with the current regulations governing
the chosen mode of transport (e.g. ground, air, sea).
When in doubt, contact MILWAUKEE, the carrier
or other trained Dangerous Goods professional to
determine applicable regulations.
The personal transport of Li-Ion battery packs is al-
lowed when done in accordance with these warnings
and instructions. When shipping Li-Ion batteries with
a commercial carrier, they are shipped under classifi-
cation UN 3480 (battery only) or UN 3481 (batteries
contained in or packed with equipment). The proper
packaging, labeling, marking, and documentation
requirements are generally dependent upon whether
the particular batteries are rated greater than or less
than 100 Wh. Often, Li-Ion batteries rated 100 Wh or
less are "excepted" from certain shipping regulations.
In the U.S., products shipped via ground transport
may be "excepted" from certain hazardous material
shipping regulations if they are under 300Wh.
To reduce the risk of injury or ex-
WARNING
plosion, never burn or incinerate
a battery pack even if it is damaged, dead, or
completely discharged. When burned, toxic
fumes and materials are created.
Disposing of MILWAUKEE Li-Ion
Battery Packs
MILWAUKEE Li-Ion battery packs are more environ-
mentally friendly than some other types of battery
packs (e.g., nickel-cadmium). Always dispose of
battery packs according to federal, state and local
regulations. Contact a local recycling agency for
recycling locations.
Solution
Continue working
Prepare to
charge pack
Charge pack
Release trigger
and restart,
reduce pressure
Release trigger
and allow battery
to cool
4
Even discharged battery packs contain some energy.
Before disposing, use electrical tape to cover the
terminals to prevent the battery pack from shorting,
which could cause a fire or explosion.
RBRC Battery Recycling Seals
The RBRC™ Battery Recycling Seals (see the
Symbology section) on battery packs indicates that
MILWAUKEE has arranged for recycling with the Re-
chargeable Battery Recycling Corporation (RBRC).
At the end of its useful life, return the battery pack
to a MILWAUKEE Branch Office/Service Center or a
participating retailer. For more information, visit the
RBRC web site at www.rbrc.org.
CHARGER
OPERATION
Charge only MILWAUKEE M18™
WARNING
and M12™ Li-Ion batteries in this
MILWAUKEE Li-Ion charger. Other types of bat-
teries may cause personal injury and damage.
When to Charge the Battery Pack
with this MILWAUKEE Charger
Remove the battery pack from the product for
charging when convenient for you and your job.
MILWAUKEE batteries do not develop a "memory"
when charged after only a partial discharge. It is not
necessary to run down the battery pack before plac-
ing it on the charger.
• Use the fuel gauge to determine when to charge
your MILWAUKEE Li-Ion battery pack.
• The battery pack's charge can be "Topped-Off"
before starting a big job or long day of use.
• The only time it is necessary to charge the
MILWAUKEE Li-Ion battery pack is when the battery
pack has reached the end of its charge. To signal
the end of charge, power to the product will drop
quickly, allowing enough power to finish the opera-
tion. Charge the battery pack as needed.
How to Charge the Battery Pack
Align the battery pack with the bay and slide the
battery pack into the charger as far as possible.
The red light will come on, either flashing quickly
(battery pack or charger is too hot or cold), flashing
slowly (communication between pack and charger)
or continuous (pack is charging).
• Charge time depends on capacity of battery pack.
Heavily cycled batteries may take longer to charge
completely.
• On M18™ battery packs, the fuel gauge lights are
displayed as the pack is being charged, indicating
how fully charged the pack is. The fuel gauge will
turn off when charging is complete.
• After charging is complete, the continuous green
light will come on.
• The charger will keep the battery pack fully charged
if it is left on the charger. The light indicator will be
same as normal charging.
• The next pack inserted in the charger will begin
charging when the previous pack is fully charged.
• If the light indicator flashes red and green or does not
come on, check that the battery pack is fully seated
into the bay. Remove the battery pack and reinsert.
If the problem persists, remove pack(s) and unplug
charger for at least 2 minutes. After 2 minutes, plug
charger back in and insert pack. If the problem
continues, contact a MILWAUKEE service facility.