Harbor Freight Tools 93781 User Manual
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AUTOMATIC
BATTERY CHARGER
93781
ASSEMBLY & OPERATING INSTRUCTIONS
Due to continuing improvements, actual product may differ slightly from the product described herein.
Visit our Web site at http://www.harborfreight.com
READ AND UNDERSTAND ALL WARNINGS
Copyright© 2005 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.
For technical questions and replacement parts, please call 1-800-444-3353.
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
AND INSTRUCTIONS BEFORE USE.
THANK YOU for choosing a HARBOR FREIGHT TOOLS product. For future reference, please
complete the owner’s record below:
Model______________ Serial No.____________ Purchase Date_______________
SAVE THE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the
entire manual to become familiar with the unit BEFORE you begin assembly.
Technical Specifications
Input Voltage: 115V
Output Voltage: 13.5V
Charging Current: 1.1 Amps
Battery Cables: 6 Foot long
Overall Dimensions: 3-1/2” W X 6-5/8” L X 7” H
Power Cord: 18 Gauge X 2 Wire UL
®
listed
Net Weight: 2.5 Lbs.
Automatic charging: Battery Charger will not overcharge.
Multiple LED indicator lights: Red LED (on left) = reversed polarity,
Red LED (center) = “charging” mode,
Green LED (on right) = fully charged – trickle charge mode.
For best results, the capacity of the battery should be below 24 Ah.
Safety Warnings and Precautions
WARNING: When using product, basic safety precautions should always be followed to
reduce the risk of personal injury and damage to equipment.
Read all instructions before using this product!
WORK AREA
1. Keep your work area clean and well lit. Cluttered benches and dark areas invite
accidents.
2. Do not operate the Battery Charger in explosive atmospheres, such as in the
presence of flammable liquids, gases, or dust. Electrical products create sparks which
may ignite the dust or fumes.
3. Keep bystanders, children, and visitors away while operating the Battery Charger.
Distractions can cause you to lose control. Protect others in the work area from sparks.
Provide barriers or shields as needed.
ELECTRICAL SAFETY
4. Grounded products must be plugged into an outlet properly installed and grounded in
accordance with all codes and ordinances. Never remove the grounding prong or
modify the plug in any way. Do not use any adapter plugs. Check with a qualified
electrician if you are in doubt as to whether the outlet is properly grounded. If a
grounded product should electrically malfunction or break down, grounding provides a low
resistance path to carry electricity away from the user.
SKU 93781 For technical questions please call 1-800-444-3353. Page 2
5. Double insulated products are equipped with a polarized plug (one blade is wider
than the other). This plug will fit in a polarized outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified
electrician to install a polarized outlet. Do not change the plug in any way.
Double insulation eliminates the need for the three wire grounded power cord and
grounded power supply system.
6. Avoid body contact with grounded surfaces such as pipes, radiators, ranges, and
refrigerators. There is an increased risk of electric shock if your body is grounded.
7. Do not abuse the Power Cord. Never use the Power Cord to carry the Battery Charger
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil, sharp
edges, or moving parts. Replace damaged Power Cords immediately. Damaged Power
Cords increase the risk of electric shock.
8. When operating a power tool outside, use an outdoor extension cord marked “W-A”
or “W”. These extension cords are rated for outdoor use, and reduce the risk of electric
shock.
PERSONAL SAFETY
9. Stay alert. Watch what you are doing, and use common sense when operating the
Battery Charger. Do not operate the Battery Charger while tired or under the
influence of drugs, alcohol, or medication.
10. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your
hair and clothing away from the Battery Charger. Loose clothes, jewelry, or long hair can
be caught in the Battery Charger, causing personal injury.
11. Use safety equipment. Always wear eye protection during assembly, use, and mainte-
nance.
TOOL USE AND CARE
12. Do not overload the Battery Charger. Use the correct Battery Charger for your
application. The Battery Charger will do the job better and safer at the speed and capacity
for which it is designed.
13. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the Battery Charger. Such
preventive safety measures reduce the risk of turning on the product accidentally.
14. Store idle tools out of reach of children and other untrained persons. The Battery
Charger is dangerous in the hands of untrained users.
15. Maintain the Battery Charger with care. Do not use a damaged Battery Charger. Tag
damaged Battery Charger “Do not use” until repaired.
SERVICE
16. Battery Charger service must be performed only by qualified repair personnel.
Service or maintenance performed by unqualified personnel could result in a risk of injury.
SKU 93781 For technical questions please call 1-800-444-3353. Page 3
SERVICE (Cont’d)
17. When servicing the Battery Charger, use only identical replacement parts. Use of
unauthorized parts or failure to follow maintenance instructions may create a risk of electric
shock or injury.
18. Always unplug the Battery Charger from its electrical outlet before performing any
inspection, maintenance, or cleaning procedures.
19. WARNING! People with pacemakers should consult their physician(s) before
using this product. Operation of electrical equipment in close proximity to a heart
pacemaker could cause interference or failure of the pacemaker.
20. Do not expose the Battery Charger equipment to rain or wet conditions. Water
entering electrically powered equipment will increase the risk of electric shock.
GROUNDING
WARNING!
Improperly connecting the grounding wire can result in the risk of electric shock. Check
with a qualified electrician if you are in doubt as to whether the outlet is properly grounded.
Do not modify the power cord plug provided with the Battery Charger. Never remove the
grounding prong from the plug. Do not use the Battery Charger if the power cord or plug is
damaged. If damaged, have it repaired by a service facility before use. If the plug will not fit
the outlet, have a proper outlet installed by a qualified electrician.
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
1. Tools marked with “Grounding Required” have a three wire cord and three prong grounding
plug. The plug must be connected to a properly grounded outlet. If the Battery Charger
should electrically malfunction or break down, grounding provides a low resistance path to
carry electricity away from the user, reducing the risk of electric shock. (See Figure A.)
2. The grounding prong in the plug is connected through the green wire inside the cord to the
grounding system in the tool. The green wire in the cord must be the only wire connected to
the Battery Charger’s grounding system and must never be attached to an electrically “live”
terminal. (See Figure A.)
3. A grounded appliance must be plugged into an appropriate outlet, properly installed and
grounded in accordance with all codes and ordinances. The plug and outlet should look like
those in the following illustration. (See Figure A.)
Figure A
SKU 93781 For technical questions please call 1-800-444-3353. Page 4
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