operating instructions

NOTE: A marine (boat) boat battery must be removed and charged on shore. To charge it on board requires equipment specially designed for marine use.

IMPORTANT: Follow all safety instructions and precautions when charging your battery. Wear complete eye protection and clothing protection. Charge your battery in a well- ventilated area.

Charging Battery In The Vehicle:

1.Avoid personal injury by keeping clear of fan blades, belts, pulleys and other engine parts.

2.Avoid damaging the charger by keep- ing the power cord and output cords away from the hood, door or moving engine parts.

3.Note the polarity of the battery posts by checking the identification marks on the battery: POSITIVE (POS, P or +) and NEGATIVE (NEG, N or -). The positive post is usually larger than the negative post.

4.Identify which battery post is ground- ed or connected to the chassis. THIS IS NORMALLY THE NEGATIVE POST.

NEGATIVE GROUNDED SYSTEM

5.Connecting to a negative-grounded system: Connect the red (POSITIVE) output clamp to the POSITIVE post of the battery. Rock and twist the clamp back and forth to be sure a solid electrical connection is made. Then connect the black (NEGATIVE) output clamp to a heavy, unpainted metal

part of the chassis or engine block, away from the battery (see figure). DO NOT connect clamp to negative battery post, carburetor, fuel line or sheet metal part.

Connecting to a positive-grounded system: Connect the black (NEGA- TIVE) output clamp to the NEGATIVE post of the battery. Rock and twist the clamp back and forth to be sure a solid electrical connection is made. Then connect the red (POSITIVE) output clamp to a heavy, unpainted metal part of the chassis or engine block, away from the battery. DO NOT connect clamp to positive battery post, carburetor, fuel line or sheet metal part.

6.Plug power cord into a 120V AC

2-prong wall outlet. The charger will be set to the default state of 12V REGULAR battery type, no charge rate (tester mode).

7.Press the appropriate control buttons to select the desired charge rate and battery type. Within a few seconds, the CHARGING (yellow) LED should light and the charging process should start. If the CHECK (red) LED is on, check for correct cable connections.

8.To disconnect the charger, unplug its power cord before attempting to disconnect the output clamps. Then, standing away from the battery, re- move the output clamp from the chas- sis or engine block. Finally, remove the output clamp from the battery post.

9.Clean and store the charger in a dry location.

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Schumacher SC-7500A Operating instructions, Charging Battery In The Vehicle, Negative Grounded System