Schumacher 520A-PE, Owner'S Manual, Page: 5 / 16

5
BATTERY
POSITIVE
NEGATIVE
24", 6 GAUGE
CABLE
+ -
BATTERY CHARGER
1. Check polarity of battery posts. Battery case will be marked
by each post: POSITIVE (POS, P, +) and NEGATIVE (NEG,
N, -).
NOTE: The positive battery post usually has a larger
diameter than the negative post.
2. Attach a 24-inch long (or longer) 6-gauge (AWG) insulated
battery cable to NEGATIVE (NEG, N, -) battery post. (Not
provided with charger.)
3. Connect POSITIVE (RED) charger clip to POSITIVE (POS,
P, +) post battery. Rock clip back and forth to make good
connection.
4. Position yourself and free end of 24 inch cable as far away
from battery as possible. Then connect NEGATIVE (BLACK)
charger clip to free end of cable.
WARNING: Do not face
battery when making final connection. Rock clip back and
forth to make a good connection.
FIGURE 7 shows the connection.
5. Plug charger AC cord into 120 volt grounded outlet.
6. Select auto or manual charging, see charge controls.
7. When battery is fully charged, unplug charger from AC power
source.
1. Position AC power cord and DC charging cords to reduce
risk of damage by hood, door, or moving engine parts.
2. Stay clear of fan blades, belts, pulleys, and other parts that
can cause injury.
3. Check polarity of battery posts. Battery case will be marked
by each post: POSITIVE (POS, P, +) and NEGATIVE (NEG,
N, -).
NOTE: The positive battery post usually has a larger
diameter than the negative post.
4. Determine which post of battery is grounded (connected)
to chassis.
NOTE: The negative post is normally grounded.
NEGATIVE GROUNDED POST
5A. For negative-grounded vehicle, connect POSITIVE (RED)
clip from battery charger to POSITIVE (POS, P, +)
ungrounded post of battery. Connect NEGATIVE (BLACK)
clip to vehicle chassis or engine block away from battery.
Connect to a heavy gage metal part of the frame or engine
block.
WARNING: Do not connect clip to carburetor, fuel lines, or
sheet-metal body parts. NOTE: Attach clips to battery post
and twist or rock back an forth several times to make a
good connection. This tends to keep clips from slipping off
terminals and helps to reduce risk of sparking.
FIGURE 6 shows connections for a negative-grounded
battery.
POSITIVE GROUNDED POST
5B. For positive-grounded vehicle, connect NEGATIVE (BLACK)
clip from battery charger to NEGATIVE (NEG, N, -)
ungrounded post of battery. Connect POSITIVE (RED) clip
to vehicle chassis or engine block away from battery.
Connect to a heavy gauge metal part of the frame or engine
block.
GROUND
(NEG)
FIGURE 6 CONNECTION TO NEGATIVE
GROUNDED BATTERY
When charging battery in vehicle, take care to determine the battery type and which pole is grounded. To reduce risk of a spark near
battery, follow these steps when battery is inside vehicle.
WARNING: A spark near the battery may cause battery explosion.
8. When battery is fully charged and charger is unplugged,
(1) remove clip from end of Negative end of cable, and (2)
remove clip from Positive battery post, in that order.
9. Clean and store battery charger.
FIGURE 7 CONNECT NEGATIVE BATTERY CLIP
TO 24 INCH CABLE END
POWER
CORD
TO
GROUNDED
POWER
OUTLET
I. OPERATING INSTRUCTIONS: CHARGING BATTERY IN VEHICLE
6. Plug charger AC cord into a grounded 120 volt grounded
outlet.
7. Select either automatic or manual, see charger controls.
8. When battery is fully charged, unplug charger from AC power
source.
9. Remove charger clips from (1) chassis and (2) battery post,
in that order.
10. Clean and store battery charger.