Negative Grounded Post

E.OPERATING INSTRUCTIONS: CHARGING BATTERY IN VEHICLE

When charging battery in the vehicle, take care to determine the battery type and which post is grounded. To reduce risk of a spark near battery, follow these steps when battery is installed in vehicle. WARNING: A spark near 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 ground (connected) to chassis.

NOTE: The negative post is normally grounded.

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 gauge metal part of the frame or engine block.

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.

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 and forth several times to make a good connection. This tends to keep clips from slipping off terminals and helps to reduce risk of sparking.

6.Make all desired settings before applying AC power to the charger.

7.Observe the meter for proper response, if something does not look right, refer to the trouble shooting section of this manual.

8.When battery is fully charged, unplug charger from AC outlet.

9.Remove charger clips from (1) chassis and (2) battery post, in that order.

F.OPERATING INSTRUCTIONS: CHARGING BATTERY OUT OF VEHICLE

When charging battery out of vehicle, take care to determine the battery type. To reduce risk of a spark near battery, follow these steps when battery is outside vehicle. WARNING: A spark near the battery may cause battery explosion. WARNING: When removing battery from vehicle or boat, disconnect grounded pole first. When disconnecting, make sure all accessories are off, so as not to cause an arc. (NOTE: A marine (boat) battery must be removed and charged on shore. (To charge on board requires special equipment designed for marine use.) WARNING: When reinstalling battery, attach the ground post first.

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.

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.

5.Make all desired settings before applying AC power to the charger.

6.Observe the meter for proper response, if something does not look right, refer to the troubleshooting section of this manual.

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

POSITIVE		NEGATIVE
			BATTERY CHARGER
BATTERY	+	-
	+	-
		24", 6 GUAGE	POWER CORD
		CABLE

CONNECT NEGATIVE BATTERY

CLIP TO 24 INCH CABLE ENDTO GROUNDED POWER OUTLET

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.

WARNING: Be sure area around battery is well ventilated while battery is being charged. Gas can be forcefully blown away by using a piece of cardboard or other non-metallic material as a fan.

SF-2150MA specifications

The Schumacher SF-2150MA is an advanced battery charger and maintainer, specifically designed to meet the dynamic needs of today's automotive enthusiasts and everyday drivers alike. This model is characterized by its solid build, intelligent charging system, and user-friendly design, making it a popular choice among consumers.

One of the standout features of the SF-2150MA is its microprocessor-controlled charging technology. This smart system allows the charger to automatically adjust the charging rate based on the battery’s needs. It employs multi-stage charging, which optimizes the charging process and ensures the battery is charged efficiently and safely. This feature not only prolongs the life of the battery but also enhances its performance.

The SF-2150MA is compatible with a wide range of battery types, including lead-acid, AGM, and gel batteries. This versatility makes it suitable for various applications, from cars and trucks to recreational vehicles and motorcycles. Furthermore, the charger operates with a 2-amp output, which is effective for maintaining batteries during long periods of inactivity, making it an ideal choice for individuals who own multiple vehicles.

Another significant characteristic of the Schumacher SF-2150MA is its smart maintenance mode. This mode provides a constant float charge that keeps the battery topped off, preventing overcharging while ensuring that it remains ready for use. The LED status indicator is another user-friendly feature that provides real-time updates on the charging status, making it easier for users to monitor the charging process without guesswork.

Safety is also a top priority with the SF-2150MA. Equipped with reverse polarity protection and short-circuit protection, the charger safeguards both the user and the battery from any potential hazards associated with improper connections. This emphasis on safety further enhances user confidence, especially for those who may be less experienced with battery maintenance.

Compact and lightweight, the Schumacher SF-2150MA is designed for portability, enabling users to easily store and transport the charger. Its intuitive design allows for straightforward operation, making it accessible for both novice and experienced users.

In conclusion, the Schumacher SF-2150MA combines cutting-edge technology, safety features, and user convenience in a compact package. Its ability to charge and maintain various battery types while ensuring efficient performance makes it a valuable tool for anyone looking to optimize their battery management strategy. Whether for everyday vehicle use or maintaining recreational vehicles, the SF-2150MA stands out as a reliable and effective battery charger.