FUNCTIONAL
DESCRIPTION
4
3
1. Light indicators:
Continuous red: Charging
Slow flashing green: Approaching full charge
Continuous green: Charging is complete
Fast flashing red: Battery is too hot/cold -
Charging will begin when battery reaches correct
charging temperature
Slow flashing red: Battery charge is pending -
Charging will begin when the first pack is fully
charged
Flashing red/green: Damaged or faulty battery pack
2. Bays
3. Cord
4. Vents
5. Battery Contacts
6. Release Buttons
7. Fuel Gauge button
8. Fuel Gauge
9. Super charge-capable
pack indicator
6
8
7
SYMBOLOGY
Volts
Direct Current
Alternating Current
Double Insulated
Properly Recycle Batteries
BFP
Backfeed Protected
1
2
5
6
9
5
6
Hertz
Amps
UL Listing for Canada and U.S.
M18
™
LI-ION BATTERY PACKS
Fuel Gauge
Use the Fuel Gauge to deter
mine the battery pack's re-
maining run time. Press the
Fuel Gauge button to dis-
play the lights. The Fuel
Gauge will light up for 2-3
seconds. When less than
10% of charge is left, 1 light
on the fuel gauge will flash
slowly.
NOTE: If the Fuel Gauge doesn't appear to be
working, place the battery pack on the charger and
charge as needed.
Compared to NiCd battery pack types, MILWAUKEE
Li-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 the
end of discharge, 1 light on the fuel gauge will flash
quickly for 2-3 seconds and the tool will not run.
Charge the battery pack.
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. All the fuel gauge lights will flash. Release
the trigger and restart.
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 tool will not run. Allow the
battery to cool down.
Fuel Gauge Lights
Diagnosis
Lights 1 - 4 Solid
Remaining run time Continue working
1 Light, flashing
Less than 10% run
slowly
time left
1 Light, flashing
End of discharge
quickly
Lights 1-4, flashing
Current draw too
quickly
high
Lights 1&3 / 2&4,
Battery temperature
flashing 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 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.
3
AND M12
Approximate Run
Time Remaining
78-100
55-77
33-54
%
10-32
%
Less than 10% if bottom light
is flashing
Solution
Prepare to charge pack
Charge pack
Release trigger and
restart, reduce pressure
Release trigger and allow
battery to cool
™
%
%