Harbor Freight Tools 66783 User Manual

BATTERY CHARGER/STARTER

66783

SET UP AND OPERATING INSTRUCTIONS

Distributed exclusively by Harbor Freight Tools®.

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our website at: http://www.harborfreight.com

Read this material before using this product.

Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Copyright© 2009 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 manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.

For technical questions or replacement parts, please call 1-800-444-3353.

SPECIFICATIONS

Input 120 V~, 60 Hz, 2.2 A Battery Leads 6’ 7” x 16 AWG
Output 12 VDC - 10* A

12 VDC - 2* A
6 VDC - 10* A
Engine Start - 55 A

Power Cord

Weight 10 lb.

6’ 5” x 18 AWG
(3-Prong Grounded Plug)

E224783

*Amperage is only present when the unit is connected to a battery or in START mode.

IMPORTANT SAFEGUARDS

IMPORTANT SAFETY INSTRUCTIONS

“1. SAVE THESE INSTRUCTIONS” - This manual contains important safety and
operating instructions for battery charger Model: 66783.

Do not expose charger to rain or snow.2.
Use of an attachment not recommended or sold by the battery charger 3.

manufacturer may result in a risk of re, electric shock, or injury to persons.

To reduce risk of damage to electric plug and cord, pull by plug rather than cord 4.
when disconnecting charger. An extension cord should not be used unless
absolutely necessary.

Use of improper extension cord could result in a risk of re and electric shock. If 5.
extension cord must be used, make sure:

That pins on plug of extension cord are the same number, size, and shape as a.
those of plug on charger.

That extension cord is properly wired and in good electrical condition.b.
That wire size is large enough for AC ampere rating of charger.c.

MINIMUM AWG WIRE SIZE FOR EXTENSION CORDS FOR THIS BATTERY

CHARGER

AC input Length of cord, m

Current I, A AWG size of cord

25 50 100 150

0 < I < 2 18 18 18 16
2 < I < 3 18 18 16 14
3 < I < 4 18 18 16 14
4 < I < 5 18 18 14 12
5 < I < 6 18 16 14 12

AC input Length of cord, m

Current I, A AWG size of cord

25 50 100 150

6 < I < 8 18 16 12 10

8 < I < 10 18 14 12 10
10 < I < 12 16 14 10 8
12 < I < 14 16 12 10 8
14 < I < 16 16 12 10 8

Page 2 For technical questions, please call 1-800-444-3353. SKU 66783

GROUNDING AND AC POWER CORD CONNECTION INSTRUCTIONS -4.
Charger should be grounded to reduce risk of electric shock. Charger is equipped
with an electric cord having an equipment-grounding conductor and a grounding
plug. The plug must be plugged into an outlet that is properly installed and
grounded in accordance with all local codes and ordinances.

DANGER - Never alter AC cord or plug provided - if it will not t outlet, have
proper outlet installed by a qualied electrician. Improper connection can result in a

risk of an electric shock.
This battery charger is for use on a nominal 120-volt circuit, and has a grounding
plug that looks like the plug illustrated in sketch A in Below Figure. A temporary
adapter, which looks like the adapter illustrated in sketch B, may be used to
connect this plug to a two-pole receptacle as shown in sketch B if a properly
grounded outlet is not available. The temporary adapter should be used only until a

properly grounded outlet can be installed by a qualied electrician.

Metal Screw

Cover of Grounded

Grounding

Pin

(A)

Outlet Box

(B)

DANGER - Before using adapter as illustrated, be certain that center screw
of outlet plate is grounded. The green-colored rigid ear or lug extending from

adapter must be connected to a properly grounded outlet- make certain it is
grounded. If necessary, replace original outlet cover plate screw with a longer
screw that will secure adapter ear or lug to outlet cover plate and make ground
connection to grounded outlet.

Do not operate this charger with a damaged cord or plug – replace the cord or plug 5.
immediately.

Do not operate charger if it has received a sharp blow, been dropped, or otherwise 6.

damaged in any way; take it to a qualied serviceman.
Do not disassemble charger; take it to a qualied serviceman when service or 7.

repair is required. Incorrect reassembly may result in a risk of electric shock or

re.

To reduce risk of electric shock, unplug charger from outlet before attempting any 8.
maintenance or cleaning.

WARNING - RISK OF EXPLOSIVE GASES.9.

Working in the vicinity of a lead-acid battery is dangerous. Batteries generate a.
explosive gases during normal battery operation. For this reason, it is of utmost

REV 09b

Page 3For technical questions, please call 1-800-444-3353.SKU 66783

importance that each time before using your charger, you read this and follow the
instructions exactly.

To reduce the risk of the battery explosion, follow these instructions and those b.
published by battery manufacturer and manufacturer of any equipment you intend
to use in vicinity of battery. Review cautionary markings on these products and on
engine.

PERSONAL PRECAUTIONS11.

Someone should be within range of your voice, or close enough to come to your a.
aid, when you work near a lead-acid battery.

Have plenty of fresh water and soap nearby in case battery acid contacts skin, b.
clothing, or eyes.

Wear complete eye protection and clothing protection. Avoid touching eyes while c.
working near battery.

If battery acid contacts skin or clothing, wash immediately with soap and water. If d.

acid enters eye, immediately ood with running cold water for at least 10 minutes

and get medical attention immediately.
NEVER smoke or allow a spark or ame in vicinity of battery or engine.e.
Be extra cautious to reduce risk of dropping a metal tool onto battery. It might f.

spark or short-circuit battery or other electrical part that may cause an explosion.
Remove personal metal items such as rings, bracelets, necklaces, and watches g.

when working near a lead-acid battery. A lead-acid battery can produce a short­circuit current high enough to weld a ring or the like to metal, causing a severe
burn.

Use this charger for charging LEAD-ACID batteries only. It is not intended to h.
supply power to a low voltage electrical system other than in an automotive
application. Do not use battery charger for charging dry-cell batteries that are
commonly used with home appliances. These batteries may burst and cause

injury to persons and damage to property.

NEVER charge a frozen battery.i.

PREPARING TO CHARGE BATTERY12.

If it becomes necessary to remove the battery from the vehicle to charge, always a.

remove grounded terminal from battery rst. Make sure all accessories in the

vehicle are off, so as not to cause an arc.
Be sure area around battery is well ventilated while battery is being charged. b.

Gases can be forcefully blown away, by using a piece of cardboard or other non­metallic material such as a fan.

Clean battery terminals. Be careful to keep corrosion from coming in contact with c.
eyes.

Page 4 For technical questions, please call 1-800-444-3353. SKU 66783