Schumacher SS-51A-PE Operating Instructions Charging Battery in Vehicle, Negative Grounded Post

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. (Purchase cable separately.)

3.Connect POSITIVE (RED) charger clamp to POSITIVE (POS, P, +) battery post. Rock clamp 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 clamp to free end of cable. WARNING: Do not face battery when making final connection. Rock clamp back and forth to make a good connection.

FIGURE 1 shows the connection.

5.Plug charger AC cord into 120 volt outlet.

6.Select automatic or manual charging, see Charger Controls.

7.When battery is fully charged, unplug charger from AC power source.

POSITIVENEGATIVE

BATTERY CHARGER

BATTERY + -

24", 6 GUAGE	POWER
	CORD
CABLE
	TO GROUNDED
	POWER OUTLET

FIGURE 1: CONNECT NEGATIVE BATTERY CLAMP

TO 24-INCH CABLE END

8.When battery is fully charged and charger is unplugged,

(1)remove clamp from end of Negative end of cable, and

(2)remove clamp from Positive battery post, in that order.

9.Clean and store battery charger.

OPERATING INSTRUCTIONS: CHARGING BATTERY IN VEHICLE

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.

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) clamp from battery charger to POSITIVE (POS, P, +) un- grounded post of battery. Connect NEGATIVE (BLACK) clamp to vehicle chassis or engine block away from bat- tery. Connect to a heavy-gauge metal part of the frame or engine block.

WARNING: Do not connect clip to carburetor, fuel lines, or sheet-

metal body parts. NOTE: Attach clamps to battery post and twist or rock back and forth several times to make a good connec- tion. This tends to keep clamps from slipping off terminals and helps to reduce risk of sparking.

FIGURE 2 shows connections for a negative-grounded battery.

POSITIVE GROUNDED POST

5B. For positive-grounded vehicle, connect NEGATIVE (BLACK) clamp from battery charger to NEGATIVE (NEG, N, -) ungrounded post of battery. Connect POSITIVE (RED) clamp 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 2: CONNECTION TO NEGATIVE

GROUNDED BATTERY

6.Plug charger AC cord into a grounded 120 volt 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 clamps from (1) chassis and (2) battery post, in that order.

10.Clean and store battery charger.

NOTE: Charger will hum when clamps are removed from battery and power cord is still plugged into electrical outlet.

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