Schumacher MMF-120A - Manual

1

00-99-000271/0403

This product has a sealed lead-acid battery inside that should be kept at full charge for longer life.
Recharge when first received (even if green ‘full power’ light glows), after each use and every 3
months. Failure to do this may cause battery life to be greatly reduced.

Owner's Manual

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Important Safety Instructions

MODEL

MMF-120A

OPERATING INSTRUCTIONS

SCHUMACHER ELECTRIC CORPORATION

801 BUSINESS CENTER DRIVE • MOUNT PROSPECT, ILLINOIS 60056-2179

Send Warranty Product Repairs to: 1025 E. Thompson, Hoopeston, IL 60942-0280

Call Customer Service if you have questions: 1-800-621-5485

WARNING: FAILURE TO FOLLOW INSTRUCTIONS
MAY CAUSE DAMAGE OR AN EXPLOSION. READ
ENTIRE INSTRUCTION MANUAL BEFORE USE.

1.

Turn ignition off before making cable connections.

2.

Use in a well-ventilated area.

3.

Clamp the red clamp to the positive terminal of the battery.
(For a negative grounded system.)

4.

Clamp the black clamp to an unpainted and unmoving part
of the chassis or engine block.

5.

Keep clear of fan blades, belts, pulleys and other parts that
may cause injury.

6.

You can now crank the engine. If the engine does not start,
wait at least 3 minutes before attempting to start vehicle
again. (This permits the battery to cool down.)

7.

After the engine starts, first disconnect the black clamp and
then the red clamp in that order. Store the clamps on the
ears located on the sides of the case.

8.

Recharge the MityMite as soon as possible after use.

9.

Never allow clamps to touch together or to contact the same
piece of metal to prevent sparking.

LED INDICATORS

To check the internal battery’s status, press the red button on
the front of MityMite.

The led lights will indicate as follows:

1.

A red light indicates a 50% or less charge and you should
immediately recharge MityMIte.

2.

A yellow light indicates a 50 to 75% charge. MityMite may
be used but should be recharged as soon as possible.

3.

A green light indicates the internal battery is fully charged.

CHARGING OF INTERNAL BATTERY WITH BUILT-IN
CHARGER.

After removing the MMF-120A from the carton, charge it over-
night before using even if the green Full Power light glows.

1.

To charge, plug extension cord into charger plug on the
side of the MityMite.

2.

Plug the extension cord into 120V AC source. (Electrical
outlet.)

3.

The red light will glow while charging.

4.

The green light will glow when the battery has reached full
charge. The charger will automatically drop into a float mode
and maintain the battery at full charge.

MULTI-PURPOSE POWER SUPPLY

The MMF-120A is a power source for 12 volt DC accessories
that are equipped with a cigarette lighter adapter plug. The DC
socket has a 15 amp automatic overload protection circuit
breaker. Reset the breaker by pushing the breaker button lo-
cated on the back of MityMite.

BATTERY

12 Ampere-Hour

Jump Starter
and DC Power
Source

Do not permit the battery in the MMF-120A to freeze. Never
attempt to recharge a frozen battery.