Harbor Freight Tools 66783 User Manual

Page 10

Page 10

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

SKU 66783

Disconnect charger and unplug the

10.

Power Cord (3) from the electrical

outlet.
Disconnect the Cable Clamps from

11.

the battery.

ammeter readings

The ammeter shows how much

charging current is drawn from the

charger (to the battery). When a dead

or low battery is charged the charger’s

ammeter will register at the high end. As

the battery charges, the reading will move

down toward the low end, resting on zero,

when the battery is fully charged. When

using the battery in engine starting mode

(discussed further down this page) the

needle on the ammeter will peg toward the

high end of the ammeter.

do not depend on reading the

ammeter to approximate how long

charging will take. Even at full charge the

ammeter will still be providing as much as

50 percent of the charger’s output rating.

It’s best to monitor the battery’s charge.

Sometimes, certain conditions such as a

cold battery, a sulfated battery, or a deeply

discharged Lead Calcium battery (on

many newer cars) may cause the ammeter

to read near a full charge, when the

charging process is only beginning.
note: Cold batteries (at or below 32°

Fahrenheit) begin charging at a low

rate and then increase as the battery

warms. When the battery charges

up, the rate will decrease at a normal

rate. Do not charge a frozen battery.

shOrted Batteries will read on the

ammeter as a high end peg at the begin-

ning of the charging process. If after 5-10

minutes the needle does not move off of the

high end, the battery probably has a short

circuit. Unplug the charger and discontinue

use. Have the battery checked by a quali-

fied technician.

engine starting

note: This charger’s high-current output

can help start vehicles with weak

batteries.

some newer vehicles

with onboard computers may

be damaged from this process.

Thoroughly read the vehicle owner’s

manual before using this procedure.
Connect the charger to the battery

as discussed on pages 7 and 8, but

leave the battery cables attached.
Set the charger to charge the battery

for 5-10 minutes according to the

appropriate charge rate for the size

of the battery as explained on the

previous 2 pages.
Set the select function switch to

start

and the select switch to

55a.

(See

Figure 1 on page 6.)

Try to start the vehicle. If it doesn’t

start in 12 seconds, stop and allow

the charger to rest for 4 minutes.

After resting, it may be beneficial to

charge the battery as explained in

step 2 before attempting Repeat this

process until successful.

note: If the engine continues to spin

but will not start after several

tries, than you may have another

problem unrelated to charging.

Stop attempting to start/charge the

battery until the problem is found

and corrected.

Continued engine

cranking may damage the vehicle’s

starter.

reV 09b