Schumacher SE-1275A Battery Charger User Manual

Schumacher SE-1275A Battery Charger

PREPARING TO CHARGE

1. If necessary remove the battery from the vehicle to charge it, always remove the grounded terminal from the battery first. Make sure all accessories in the vehicle are off, so as not to cause an arc.
2. Be sure the area around the battery is well-ventilated while the battery is being charged. Gas can be forcefully blown away using a piece of cardboard or other nonmetallic material as a fan.
3. Clean battery terminals. Be careful to keep corrosion from coming in contact with eyes.
4. Add distilled water in each cell until the battery acid reaches the level specified by the manufacturer. This helps purge excessive gas from cells. Do not overfill. Carefully follow the manufacturer’s recharging instructions for a battery without cell caps.
5. Study all battery manufacturer’s specific precautions such as removing or not removing cell caps while charging and recommended rates or charges.
6. Determine the voltage of the battery by referring to the car owner’s manual and make sure that the output voltage selector switch is set as the correct voltage. If the charger has an adjustable charge rate, charge the battery initially at the lowest rate.

CHARGER LOCATION

1. Locate the charger as far away from the battery as DC cables permit.
2. Never place the charger directly above the battery being charged; gases from the battery will corrode and damage the charger.
3. Never allow battery acid to drip on the charger when reading gravity or filling the battery.
4. Do not operate the charger in a closed-in area or restrict ventilation in any way.
5. Do not set a battery on top of the charger.
6. Do not expose the charger to rain or snow.
7. Battery chargers get hot during operation and must have proper ventilation. Air needs to flow around an entire charger.
8. Do not set battery chargers on flammable items like carpeting, upholstery, paper, cardboard,  etc. The charger may damage leather and melt plastic and rubber.

BATTERY CHARGER CONTROLS

OPERATION – Model SE-1275-A

Two switches permit Battery Type and Charge Rate selection.

Switch #1

permits the selection of either Conventional or Maintenance and Deep Cycle batteries. If you are not sure of your
battery type, use the (Regular) Conventional Setting.

Switch #2 (3 Charge Rate Modes)

• Mode 1 – Select 2 amp automatic for 12 volts smaller (<31 AH (Ampere Hour)) or warm larger lead-acid batteries.
• Mode 2 – Select 12 amp automatic for larger 12-volt batteries for a fast charge.
• Mode 3 – Select 75 amp Engine Start to assist in engine cranking of 12-volt systems. DO NOT use on 6-volt systems. Use the 75 amp engine start position for cranking automobiles or light trucks. Use only with battery in the vehicle. This will reduce the chance of damaging sensitive electronic equipment in the vehicle.

OPERATION -Model SE-5212-A

Two switches permit Battery Type and Charge rate selection

Switch #1

permits the election of either Conventional or Maintenance and Deep Cycle batteries. If you are not sure of your battery type, use the (Regular) Conventional Setting.

Switch #2 (3 Charge Rate Modes)

• Mode 1 –Select 2 amp automatic for 12 volts smaller (<31 AH (Ampere Hour)) or warm larger lead-acid batteries.
• Mode 2 –Select 10 amp automatic for larger 12-volt batteries for a fast charge.
• Mode 3 –Select 50 amp Engine Start to assist in engine cranking of 12-volt systems. DO NOT use on 6-volt systems. Use the 50 amp engine start position for cranking automobiles or light trucks. Use only with battery in the vehicle. This will reduce the chance of damaging sensitive electronic equipment in the vehicle.

OPERATION -SE-520-MA

This charger has two switches.

Switch #1

Mode 1-Manual Position: Use for charging in 2 amp or 10 amp Charge Rates on 12-volt batteries only. This charging must be monitored and stop charging when the battery is charged. Overcharging will damage the battery.

Mode #2-Automatic Position for Conventional Batteries. If you are not sure of your battery type, use the (Regular) Conventional Setting.
Mode 3-Automatic Position for Maintenance Free and Deep Cycle batteries.

Switch #2 (2 Charge Rate Modes)

Select either a 2 amp Charge Rate for small batteries or a 10 amp Charge Rate for larger batteries.

NOTE: A buzz or hum is normal when the output cables have been disconnected and the AC power cord is still connected to an electrical source (i.e. wall outlet).

READING METER/LECTURA DEL MEDIDOR

FULLY DISCHARGED BATTERY

The initial charge current to the battery is typically 10 amps. The needle points toward the 25% mark.

APPROACHES FULL CHARGE

The charge current to the battery is typically 5 amps. The needle points toward the 100% mark.

FULLY CHARGED BATTERY

The charge current to the battery is 0 amps. And, the Full Charge green LED glows. The needle points toward the Full Charge LED.

DC CONNECTION PRECAUTIONS

1. Connect and disconnect DC output clips only after setting any charger switches to the 2 AMP position and then removing the AC cord from the electric outlet. Never allow clips to touch each other.
2. Attach clips to battery posts and twist or rock back and forth several times to make good connections This tends to keep clips from slipping off terminals and helps to reduce the risk of sparking.

FOLLOW THESE STEPS WHEN THE BATTERY IS INSTALLED IN THE VEHICLEE

A SPARK NEAR THE BATTERY MAY CAUSE BATTERY EXPLOSION TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY

1. Position AC and DC cords to reduce the risk of damage by the hood, door, or moving engine part.
2. Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
3. Check the polarity of battery posts. POSITIVE (POS, P,+) battery post usually has a larger diameter than NEGATIVE (NEG, N, -) post.
4. Determine which post of the battery is grounded (connected to the chassis). If the negative post is grounded to the chassis (as in most vehicles), see No. 5. If the positive post is grounded to the chassis, see No. 6.
5. For a negative-grounded vehicle, connect the POSITIVE (RED) clip from the battery charger to the POSITIVE (POS, P,+) ungrounded post of the battery. Connect a NEGATIVE (BLACK) clip to the vehicle chassis or engine block away from the battery. Do not connect the clip to the carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gauge metal part of the frame or engine block.
6. For a positive-grounded vehicle, connect a NEGATIVE (BLACK) clip from the battery charger to a NEGATIVE (NEG, N, -) ungrounded post of the battery. Connect POSITIVE (RED) clip to vehicle chassis or engine block away from battery. Do not connect clips to the carburetor, fuel lines, or sheet metal body parts. Connect to a heavy gauge metal part of the frame or engine block.
7. When disconnecting the charger, disconnect the AC cord, remove the clip from the vehicle chassis, and then remove the clip from the battery terminal, in that order.
8. See charge period for length of charge information.

FOLLOW THESE STEPS WHEN THE BATTERY IS OUTSIDE THE VEHICLE

A SPARK NEAR THE BATTERY MAY CAUSE BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR BATTERY

1. Check the polarity of battery posts. POSITIVE (POS, P,+) battery post usually has a larger diameter than NEGATIVE (NEG, N, -) post.
2. Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to NEGATIVE (NEG, N, -) battery post ( not provided).
3. Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P,+) post of the battery.
4. Position yourself and the free end of the cable as far away from the battery as possible then connect the NEGATIVE (BLACK) charger clip to the free end of the cable.
5. Do not face the battery when making the final connection.
6. When disconnecting the charger, always do so in the reverse sequence of the connecting procedure and break the first connection while as far away from the battery as practical.
7. A marine (boat) battery must be removed and charged on shore. To charge it on board requires equipment specially designed for marine use.

AC POWER CORD CONNECTION INSTRUCTIONS

DANGER – Never alter the AC cord or plug provided if it does not fit the outlet, have the proper outlet installed by a qualified electrician. Improper connection can result in a risk of an electric shock. This battery charger is for use on a nominal 120-volt 60 HZ circuit.

OPERATION INSTRUCTIONS

1. These battery chargers are equipped with a self-resetting circuit breaker. This device protects the charger from temporary overloads. In the event of an overload, the circuit breaker will trip open, and after a short cooling-off period will reset automatically. this process is known as cycling and can be recognized by an audible clicking sound.
2. These battery chargers are equipped with an electronic control circuit that automatically governs the charge rate to your battery. The charger will satisfactorily charge Maintenance and Conventional batteries.

OUTPUT VOLTAGE

These chargers are for use with 12-volt lead-acid batteries only.

CHARGE RATE SWITCH

For smaller batteries, 30 AH (ampere hour) or less, use a 2 AMP setting. Small batteries may not be able to accept the potential of the 10 or 12-AMP setting. Unconverted energy will result in excess heat which the battery may not be able to dissipate, thus resulting in damage to the battery. For larger batteries either setting may be used.

INDICATION OF PROPER OPERATION TO A DISCHARGED BATTERY BUT OTHERWISE IN GOOD CONDITION

1. 12 AMP setting: The initial charge current should be 12 AMP gradually tapering throughout the charge cycle to 5 Amps. Though not indicated, the battery voltage will gradually rise to approximately 15 volts, then hold constant throughout the remainder of the charge cycle. When the battery reaches 15 volts and the charge current drops to 5 AMP the charger will turn off. Initially, the battery voltage will drop from its 15-volt level fairly quickly.When 13 volts is reached, the charger will again turn on, until the 15 volt, 5 AMP condition is met. As this action continues, ON time will decrease to a few seconds while OFF time increases to a range of several minutes to an hour. ON/OFF times vary with the size, type, and condition of the battery.
2. 2 AMP setting ON/OFF action is a function of battery voltage only, otherwise identical to 12 AMP setting.

CHARGE PERIOD

The approximate required time to bring a battery to full charge state depends upon the number of ampere-hours (AH) depleted from the battery. AHs are determined by multiplying the number of hours by the number of AMPS supplied to a load.

For example – If a load was connected to a battery, which drew 7 AMPS for 5 hours, the battery will have supplied 35 AH. The approximate recharge time would then be calculated by dividing the 35 AH depleted from the battery, by the ampere charge rate of the charger. To allow for tapering off of the charge rate, add 25 percent to the charge time.

Indications of a fully charged battery are

1. When the meter indicates an intermittent current flow to the battery.
2. A hydrometer reading of the specific gravity of the electrolyte (fluid) of a battery in good condition should be between 1.250 and 1.285.
3. When a battery reaches 80-85% of full charge, bubbles will appear on the surface of the fluid. As the battery nears full charge, bubbling will become more noticeably active.
4. The time required to charge two 6-volt batteries connected in series will be the same as for one 12-volt battery of equivalent size. NOTE: This charger will shut off when the battery is fully charged and will turn back on automatically when the battery needs to be charged again.
5. Do not charge two 12-volt batteries in parallel.

STORAGE

Store the battery charger in a dry area.

TROUBLESHOOTING

The battery charger is designed to work automatically. However, if a problem does occur, check the following:

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Schumacher SE-1275A Battery Charger-FAQs