CHARGER
OPERATION
Charge only MILWAUKEE M18™
WARNING
Li-Ion batteries in this MILWAUKEE
Li-Ion charger. Other types of batteries 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.
• 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 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 COOL-CYCLE™ fans will turn on. The red light
will come on, either flashing quickly (battery pack or
charger is too hot or cold), flashing slowly (commu-
nication 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.
• Super charge occurs when the battery pack is
charging above 9 A. The CHARGE ADAPT™ light
indicator will illuminate when a battery pack is super
charging. If charging two battery packs capable of
12 amp charging, the charger will charge the first
pack at 12 A, and the second battery pack will
charge at 7 A. Once the first battery pack is fully
charged (charge indicator light is solid green), the
second battery pack will charge at up to 19 A until
it's fully charged.
• 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.
• 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 second pack inserted in the charger will be-
gin charging when the first pack inserted is fully
charged.
• The next pack inserted in the charger will begin
charging when the previous pack is fully charged.
To skip a pack and move on to the next, press the
skip button.
• 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.
• If the light indicator double blinks red slowly (while
no pack is inserted), one or more fans are damaged.
The battery pack will not cool while charging, and will
charge at a reduced rate. Contact a MILWAUKEE
service facility.
Charging a Hot or Cold Battery Pack
The charger has advanced electronics that adjust
the charge rate based on battery temperature. Hot
or cold batteries may take longer to charge. When
the battery pack temperature is outside the normal
charging range, the red light will flash and the battery
will not charge. Once the battery pack is within the
acceptable range, normal charging will take place
and the red light will be continuous. This optimizes
charge time and battery life.
Battery Pack
Red Charger
Temperature
Indicator Light
Too Hot
Fast Flashing
Normal Range Continuous
Too Cold
Fast Flashing
COOL-CYCLE™ Fans
• The COOL-CYCLE™charger is designed to cool
the battery packs while charging.
• For best results, COOL-CYCLE™ capabilities are
best paired with COOL-CYCLE™ capable battery
packs.
• Once battery pack is inserted, the COOL-CYCLE™
fans will turn on and may continue cooling the battery
pack after it is charged.
• The COOL-CYCLE™ fans may not turn on or spin
slower if the battery pack is cool.
• Some older battery packs may cause fans to run
continuously. This is normal and will not damage
the battery pack or charger.
• If the charge light indicators slowly pulse red with
no battery pack installed, the COOL-CYCLE™ fan
is damaged, contact a MILWAUKEE service facility.
Powering the Charger with an Inverter
or Generator
The charger will operate with most 120-127 V gen-
erators and inverters rated at 500 Watts or higher.
Mounting to the Wall
Use the wall mount guides to mark the hanging
points.
5
Charging
Status
Not charging
Normal charging
Not charging