CEN-TECH 57015 - User Manual

The CEN-TECH 6V/12V 2 AMP, 3-STAGE MICROPROCESSOR CONTROLLED AUTOMATIC BATTERY CHARGER is designed to charge flooded lead-acid batteries, providing a controlled and safe charging process. This device is not intended for use with dry-cell batteries or deep cycle marine batteries. Its microprocessor control allows for a 3-stage charging process, optimizing battery health and longevity.

Function Description

The primary function of this battery charger is to safely and efficiently charge 6V and 12V lead-acid batteries. It operates with a 2-amp output, making it suitable for maintaining and recharging smaller batteries or for trickle charging larger ones. The 3-stage charging process ensures that the battery receives an optimal charge without overcharging, which can extend battery life. The charger is equipped with various safety features to protect both the user and the battery during operation. It includes indicators for charging status, voltage selection, and fault conditions, providing clear feedback to the user.

Usage Features

Before using the charger, it is crucial to review all safety instructions to prevent serious injury or damage. When preparing to charge, ensure the area is well-ventilated, especially when working with lead-acid batteries, as they generate explosive gases. Always wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves to protect against battery acid. Clean battery terminals carefully, avoiding contact with eyes. If the battery has removable cell caps, add distilled water to each cell until the acid reaches the level specified by the manufacturer, but do not overfill. For valve-regulated lead-acid batteries, follow the manufacturer's specific recharging instructions.

The charger should be located as far away from the battery as the DC cables permit, and never directly above the battery, as gases can corrode and damage the charger. Avoid dripping battery acid on the charger. Do not operate the charger in a closed-in area or restrict ventilation. Also, never set a battery on top of the charger.

For batteries installed in a vehicle, first, position the AC and DC cables to minimize the risk of damage from the hood, door, or moving engine parts. Keep clear of fan blades, belts, and pulleys. Check the polarity of the battery posts; the positive post (POS, P, +) is typically larger than the negative post (NEG, N, -). Determine which post is grounded to the chassis.

If the vehicle has a negative-grounded system, connect the POSITIVE (RED) clip from the charger to the POSITIVE (POS, P, +) ungrounded post of the battery. Then, connect the NEGATIVE (BLACK) clip to the vehicle chassis or engine block, away from the battery. Avoid connecting to the carburetor, fuel lines, or sheet-metal body parts; instead, connect to a heavy-gauge metal part of the frame or engine block.

For positive-grounded vehicles, connect the NEGATIVE (BLACK) clip from the charger to the NEGATIVE (NEG, N, -) ungrounded post of the battery. Then, connect the POSITIVE (RED) clip to the vehicle chassis or engine block, away from the battery, following the same precautions as above.

When disconnecting the charger, always turn switches to "off," disconnect the AC cord, remove the clip from the vehicle chassis, and then remove the clip from the battery terminal.

For batteries outside a vehicle, check the polarity of the battery posts. Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to the NEGATIVE (NEG, N, -) battery post. Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) post of the battery. 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. Do not face the battery when making the final connection.

Once connections are made, plug the power cord into a properly grounded outlet. If the Fault LED lights up, unplug the charger and recheck cable connections. Press the Mode Button to select the desired voltage (6V or 12V). When a good connection is established, the Voltage and Standby LEDs will light, and the Charging Indicator LEDs will display the charging status. Charging is complete when the 100% Charging Indicator LED is lit. The charger will then enter trickle charge mode, which requires user monitoring. After use, unplug the power cord, disconnect the negative (BLACK) clamp, then remove the positive (RED) clamp. Clean the charger and store it indoors, out of children's reach.

Maintenance Features

Regular maintenance is essential for the safe and effective operation of the battery charger. Before each use, inspect the general condition of the charger. Look for loose hardware, cracked or broken parts, damaged electrical wiring or cable insulation, and any other condition that might affect its safe operation. If any issues are found, do not use the charger until the problem is corrected.

After each use, wipe the external surfaces of the charger with a clean cloth to remove any dirt or debris.

Important Safety Reminders for Maintenance:

Always unplug the charger, disconnect any battery, and allow the charger to cool completely before performing any inspection, maintenance, or cleaning procedures.
Do not use damaged equipment. If abnormal noise or vibration occurs, have the problem corrected before further use.
If the supply cord of the charger is damaged, it must be replaced only by a qualified service technician to prevent serious injury.
Do not open the charger housing; there are no user-serviceable parts inside.
Maintain all labels and nameplates on the charger. If they are unreadable or missing, contact Harbor Freight Tools for a replacement.

This charger is not a toy and should be kept out of reach of children. Do not attempt to charge non-rechargeable or defective batteries. Do not charge more than one battery at a time. If the charger requires service, it should be performed by a qualified repair person using identical replacement parts to ensure the safety of the charger is maintained. Avoid using the charger if you are tired or under the influence of drugs, alcohol, or medication, as inattention can lead to serious personal injury. Before moving the charger, disconnect the power supply and battery, then allow the charger to cool. Individuals with pacemakers should consult their physician before use, taking precautions to avoid electromagnetic fields and electrical shock. This includes avoiding operating alone, properly maintaining and inspecting the device, and properly grounding the power cord, potentially with a Ground Fault Circuit Interrupter (GFCI) to prevent sustained electrical shock.

CEN-TECH 57015 Specifications

General

Battery Voltage	6V/12V
Output Voltage	6V/12V DC
Display	LED Indicators
Charging Current	2A
Input Voltage	120V AC
Output Current	2A
Battery Compatibility	AGM, Gel
Charging Modes	Automatic
Safety Features	Overcharge protection, Reverse polarity protection, Short circuit protection