8
Onboard Fuel Gauge LEDs
and Alert Tones
When the power source detects a low battery con-
dition, a dead battery, an overload, or overtemp
condition, the user will be alerted with an audible
tone(s). Investigate the root cause of the tone(s) to
continue use.
Overload and Overtemperature
Conditions
When an overload or overtemperature condition oc-
curs, the power source will produce a unique tone
and the respective icon will light. Take the appropriate
action, such as turning off or reducing the load on
the power source, or allowing the power source to
rest (cool down) before continuing use.
NOTE:
After three consecutive overloads, the
power supply will be locked out for 5 minutes. After
5 minutes, the power supply can be turned on and
used normally.
Cold Weather Operation
MILWAUKEE Lithium-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. Insert four batteries on the power
supply and use the power supply in a light application
(up to 1000W). If the above power recommendation
is exceeded, an audible tone will be heard, and 1
LED might flash on the battery fuel gauges. Reset
the battery packs by plugging them into a charger
(the power supply acts as a charger when plugged
into AC power).
CHARGER
OPERATION
WARNING
Charge only MILWAUKEE M18™
Lithium-Ion batteries in this
MILWAUKEE Lithium-Ion charger. Other types of
batteries may cause personal injury and damage.
When to Charge the Battery Pack
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 Lithium-Ion battery pack.
•
You can "Top-Off" your battery packs' 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
battery pack has reached the end of its charge. To
signal the end of charge, the power supply will beep
and flash the fuel gauge. Charge the battery pack
as needed.
How to Charge the Battery Pack
1. Connect 120V power cord to AC input.
NOTE:
When an extension cord is connected to
the AC input, power supply will enter charging
mode.
2.
Insert one or more battery packs in available
battery pack slots. Make sure it latches securely
into place. The fuel gauge on each battery pack
indicates how fully charged the pack is. The fuel
gauge will turn off when charging is complete.
NOTE:
Battery packs will charge simultaneously.
3. Once inserted, the LED for the corresponding
charging indicator will light. Battery packs will
charge simultaneously. The LEDs will indicate
the following:
Continuous red: Charging
Slow flashing green: Approaching full charge
Continuous green light: Charging is
complete
Flashing red: Battery is too hot/cold -
Charging will begin when battery reaches
correct charging temperature
Indicator lights
NOTE:
When in charging mode, the power supply
cannot use AC outlets or USB ports.
4.
After charging is complete, the charge indicator
light will be illuminated green. The power supply
will keep the battery pack fully charged if it is left
on the charger. The charge indicator light will be
same as normal charging.
•If the charge indicator light flashes red and green,
check that the battery pack is fully seated into the
bay. Remove the battery pack and reinsert. If the
charge indicator light continues to flash red and
green, remove pack(s) and unplug charger for at
least 2 minutes. After 2 minutes, plug charger back
in and insert pack. If the problem persists, contact
a MILWAUKEE service facility.
• If the charge indicator light does not come on, check
that the battery pack is fully seated into the bay.
Remove the battery pack and reinsert. If the charge
indicator light still does not come on, remove pack(s)
and unplug charger for at least 2 minutes. After 2
minutes, plug charger back in and insert pack. If after
these attempts the charge indicator light still does
not come on, contact a MILWAUKEE service facility.
