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For technical questions, please call 1-888-866-5797.

Item 56574

15. Switch any device to be powered off 

before plugging into this device.

16. Stay alert.  Do not use while tired 

or under the influence of drugs, 
alcohol, or medication. 

17. Store idle equipment.  When not 

in use, this product must be stored 
in a dry location to inhibit rust.

18. People with pacemakers should 

consult their physician(s) before use.  
Electromagnetic fields in close proximity to 
heart pacemaker could cause pacemaker 
interference or pacemaker failure.

19. Do not use with positive ground electrical 

systems.  (Most automobiles, trucks, and 
RV’s have negative ground systems.)

20. Do not use this inverter to power 

sensitive devices such as medical 
devices or computers.  Do not use 
in ignition protected areas.

21. Maintain product labels and nameplates.  

These carry important safety information.  
If unreadable or missing, contact 
Harbor Freight Tools for a replacement.

22. The warnings, precautions, and 

instructions discussed in this instruction 
sheet cannot cover all possible conditions 
and situations that may occur.  It must 
be understood by the operator that 
common sense and caution are factors 
which cannot be built into this product, 
but must be supplied by the operator. 

Operating Instructions

Read the entire Important Safety Information section at the beginning of this 
document including all text under subheadings therein before set up or use of 

this product.

1.  Move the vehicle outside any enclosed 

structure.  Turn on the vehicle’s engine.

2.  Plug the Inverter into the vehicle’s 12V 

(cigarette lighter) socket. The Inverter’s 
green LED power indicator will light up.

3.  To power a device or appliance:

a. 

With the device or appliance switched 
off, plug it into the Power Outlet or 
the USB Outlet on the Inverter.

b. 

Turn on the device and/or appliance.

Note:

  The total wattage of all items plugged 

into the Inverter must not use more than 
120 watts during continuous operation, 
otherwise the Inverter may overload.

Note:

  This unit has an automatic shut off 

feature if output is over 126 watts or if input 
voltage is under 9.9 VDC or over 15.5 VDC.

4.  If device suddenly stops working, 

internal fuse may be blown. 
See Maintenance, Step 3.

NOTICE:

  Some rechargeable appliances 

may damage the Inverter or the appliance.  
When first using a rechargeable device, 
check the Inverter’s temperature for the first 
10 minutes.  If it becomes abnormally hot, 
do not use this device with the Inverter.

Note:

  Connect the Inverter while the vehicle’s 

engine is running.  Thereafter the engine 
can be on or off.  If running the Inverter 
with the engine off, run the engine every 
hour for at least 10 minutes to recharge the 
battery.  Doing this will help prevent any 
unexpected shutdown of the equipment.  
This will also help ensure that there will be 
enough battery power to start the vehicle.

WARNING!  Due to the risk of carbon 
monoxide inhalation, do not run the 
vehicle’s engine within an enclosed area.

5.  After use, turn off the device, then 

unplug it from the Inverter.

6.  Unplug the Inverter from the 12V 

(cigarette lighter) socket. 

Summary of Contents for 56574

Page 1: ...rence 19l When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Copyright 2019 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manua...

Page 2: ...presence of flammable gases or liquids 8 Do not use this item in rain on a boat or any other wet area Do not expose to direct sunlight or heat 9 Delicate device handle with care Do not drop or strike this item 10 Do not open housing Contains no user serviceable parts Internal parts may be electrified even with unit off and power disconnected 11 Do not overload this device This device is designed f...

Page 3: ...uct 1 Move the vehicle outside any enclosed structure Turn on the vehicle s engine 2 Plug the Inverter into the vehicle s 12V cigarette lighter socket The Inverter s green LED power indicator will light up 3 To power a device or appliance a With the device or appliance switched off plug it into the Power Outlet or the USB Outlet on the Inverter b Turn on the device and or appliance Note The total ...

Page 4: ...r accidents repairs or alterations outside our facilities criminal activity improper installation normal wear and tear or to lack of maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation of incidental or consequential ...

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