7
GENERAL
OPERATION
Power Supply Capacity
Make sure the power supply can supply enough
rated and peak watts for the items being powered
at the same time.
1. Select the items to be powered at the same time.
2. Total the rated watts of these items. This is the
amount of power the power supply must produce
to keep the items running. See wattage reference
chart.
3. Estimate how many peak watts will be needed.
Peak wattage is the short burst of power needed to
start electric motor-driven tools such as a circular
saw. Because not all motors start at the same time,
total peak watts can be estimated by adding only
the item with the highest additional peak watts to
the total rated watts from step 2.
Application/
Equipment
Estimated
Rated
Watts*
Estimated
Peak
Watts*
Job Site
Electric Drill - 3/8"
600
1000
Work Light
1000
1000
Reciprocating Saw
960
1920
Circular Saw - 7-1/4"
1400
2300
Miter Saw - 10"
1800
2800
Air Compressor 1/4 HP
970
1600
Airless Sprayer 1/3 HP
600
1200
Radio
50
50
M18™/M12™
Standard Charger
(48-59-1812)
60
60
M18™/M12™
Rapid Charger
(48-59-1808)
75 (M12™)
120 (M18™)
75 (M12™)
120 (M18™)
Lifestyle
Microwave
1000
1000
TV
50-300
50-300
Satellite Receiver
250
250
Portable Fan
40
120
Heater
1300
1300
String Lights
50-150
50-150
Laptop
50-150
50-150
Tablet
15
15
Cellphone
5
5
*Wattages listed are approximate.
Check tool or appliance for actual wattage.
Fuel Gauge
Use the Fuel Gauge to deter
Less than 10% if
bottom light is flashing
Approximate Run
Time Remaining
78-100
%
55-77
%
33-54
%
10-32
%
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.
Fuel Gauge
Lights
Diagnosis
Solution
Lights 1 - 4
Solid
Remaining
run time
Continue working
1 Light,
flashing slowly
Less than
10% run time
left
Prepare to charge
pack
1 Light,
flashing quickly
End of
discharge
Charge pack
Lights 1-4,
flashing quickly
Current draw
too high
Reduce loading
on the power
supply, then retry.
Lights 1&3 /
2&4, flashing
alternatingly
Battery
temperature
too high
Allow batteries to
cool, then retry.
Using the Power Supply
This power supply converts DC electricity to 120 VAC
household power and/or USB charging power, allow
-
ing the user to charge and power a variety of devices.
• To prolong the life of the power supply and attached
devices, it is important to take care when adding
electrical loads to the power supply.
• There should be nothing connected to the power
supply outlets before starting the power source.
• The correct and safe way to manage power supply
power is to sequentially add loads.
NOTE:
The AC Outlet and USB ports can be used
at the same time. The internal fan may activate
during use.
1. Insert (4) required M18
™
battery packs.
2.
Press the power button to turn the power
supply ON.
3. Plug in and turn on the first load, preferably the
largest load. Permit the power supply output to
stabilize.
4. Plug in and turn on the next load. Again, permit
the power supply to stabilize.
NOTE:
An alert will sound when the battery packs
are low.
5. When finished, turn off the power supply, discon
-
nect the devices, and remove the battery packs.
