CENT-TECH 57015 Micro Controlled Automatic Battery Charger Owner’s Manual

6V112V 2 AMP, 3-STAGE MICROPROCESSOR-CONTROLLED AUTOMATIC BATTERY CHARGER

Owner’s Manual & Safety Instructions

Save This Manual: Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance, and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if the product has no number). Keep this manual and the receipt in a safe and dry place for future reference.

Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com

When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible.
Copyright © 2020 by  Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, the actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.

WARNING
Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL.

WarninG SyMbOlS anD DEFinitiOnS

| This is the safety alert symbol.  It is used to alert you to potential personal injury hazards.  Obey all safety messages that follow this symbol to avoid possible injury or death.
---|---
DANGER| Indicates a hazardous situation that, if not avoided,  will result in death or serious injury.

WARNING

| Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

CAUTION

| Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

NOTICE
CAUTION

| Addresses practices not related to personal injury.
V| Volts
---|---
| Alternating Current
A| Amperes
CCA| Cold Cranking Amps
RC| Reserve Capacity
Ah| Ampere-hours
| WARNING: marking concerning Risk of Eye Injury. Wear ANSI-approved splash-resistant safety goggles.
---|---
| Read the manual before set-up and/or use.
| WARNING: marking concerning Risk of Fire. Follow the connection procedure.

IMPORTANT SAFETY INSTRUCTIONS

1. SaVE tHESE inStrUctiOnS –
   This manual contains important safety and operating instructions for this battery charger.

2. Do not expose the charger to rain or snow.

3. Use of an attachment not recommended or sold by the battery charger manufacturer may result in
   a risk of fire, electric shock, or injury to persons.

4. To reduce the risk of damage to the electric
   plug and cord, pull by plug rather than cord when disconnecting charger.

5. An extension cord should not be used unless absolutely necessary. Use of improper extension cord could result in a risk of fire and electric shock.
   If an extension cord must be used, make sure:
   a. That pins on plug of extension cord are the same number, size, and shape as those of plug on the charger;
   b. That extension cord is properly wired and in good electrical condition; and
   c. That wire size is large enough for the AC ampere rating of the charger as specified in Table A. Table A: Recommended minimum AWG size for extension cords for battery chargers

**AC input rating, amperes***

|

AWG size of the cord

Length of cord, feet

Equal to or greater than

|

But less than

|

25

| 50| 100|

150

0

| 2| 18| 18| 18| 16

2

| 3| 18| 18| 16|

14

3

| 4| 18| 18| 16|

14

4

| 5| 18| 18| 14|

12

5

| 6| 18| 16| 14|

12

6

| 8| 18| 16| 12|

10

8

| 10| 18| 14| 12|

10

10

| 12| 16| 14| 10|

8

12

| 14| 16| 12| 10|

8

14

| 16| 16| 12| 10|

8

16

| 18| 14| 12| 8|

8

18| 20| 14| 12| 8|

6

***** If the input rating of a charger is given in watts rather than in amperes, the corresponding ampere rating is to be determined by dividing the wattage rating by the voltage rating – for example, 1250 watts/125 volts = 10 amperes
6. Do not operate charger with a damaged cord or plug
– replace the cord or plug immediately.

7. Do not operate the charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman.

8. Do not disassemble the charger; take it to a qualified serviceman when service or repair is required. Incorrect reassembly may result in a risk of electric shock or fire.

9. To reduce the risk of electric shock, unplug the charger from the outlet before attempting any maintenance or cleaning. Turning off controls will not reduce this risk.

10. WARNING – RISK OF EXPLOSIVE GASES.
    a. WORKING IN VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS REASON, IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE CHARGER.
    b. To reduce the risk of battery explosion, follow these instructions and those published by the battery manufacturer and manufacturer of any equipment you intend to use in the vicinity of the battery.
    Review cautionary marking on these products and on engines.

11. PERSONAL PRECAUTIONS
    a. Consider having someone close enough by to come to your aid when you work near a lead-acid battery.
    b. Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes.
    c. Wear complete eye protection and clothing protection. Avoid touching eyes while working near the battery.
    d. If battery acid contacts skin or clothing, wash immediately with soap and water.
    If acid enters the eye, immediately flood the eye with running cold water for at least 10 minutes and get medical attention immediately.
    e. NEVER smoke or allow a spark or flame in the vicinity of the battery or engine.
    f. Be extra cautious to reduce the risk of dropping a metal tool onto the battery. It might spark or short-circuit a battery or another electrical part that may cause an explosion.
    g. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a lead-acid battery. A lead-acid battery can produce a short-circuit current high enough to weld a ring or the like to metal, causing a severe burn. h. Use a charger for charging a LEAD-ACID battery only. It is not intended to supply power to a low voltage electrical system other than in a starter-motor application. Do not use a battery charger for charging dry-cell batteries that are commonly used with home appliances. These batteries may burst and cause injury to persons and damage to property.
    i. NEVER charge a frozen battery.

12. PREPARING TO CHARGE
    a. If necessary to remove the battery from the vehicle to charge, 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.
    b. Be sure the area around the battery is well ventilated while the battery is being charged.
    c. Clean battery terminals. Be careful to keep corrosion from coming in contact with eyes.
    d. Add distilled water in each cell until battery acid reaches the level specified by the battery manufacturer. Do not overfill. For a battery without removable cell caps, such as valve-regulated lead-acid batteries, carefully follow the manufacturer’s recharging instructions.
    e. Study all battery manufacturer’s specific precautions while charging and recommended rates of charge.
    f. Determine voltage of battery by referring to vehicle owner’s manual and make sure it matches output rating of the battery charger. If the charger has an adjustable charge rate, charge the battery initially at the lowest rate.

13. CHARGER LOCATION
    a. Locate charger as far away from battery as DC cables permit.
    b. Never place charger directly above battery being charged; gases from battery will corrode and damage the charger.
    c. Never allow battery acid to drip on charger when reading electrolyte specific gravity or filling battery.
    d. Do not operate charger in a closed-in area or restrict ventilation in any way.
    e. Do not set a battery on top of the charger.

14. DC CONNECTION PRECAUTIONS
    a. Connect and disconnect DC output clips only after setting any charger switches to the “off” position and removing the AC cord from the electric outlet. Never allow clips to touch each other.
    b. Attach clips to battery and chassis as indicated in 15(e), 15(f), and 16(b) through 16(d).

15.  FOLLOW THESE STEPS WHEN THE BATTERY IS INSTALLED IN THE VEHICLE. A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE RISK OF A SPARK NEAR BATTERY:
    a. Position AC and DC cables to reduce the risk of damage by hood, door, or moving engine part.
    b. Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
    c. Check the polarity of battery posts. POSITIVE (POS, P, +) battery post usually has a larger diameter than NEGATIVE (NEG, N,–) post.
    d. Determine which post of battery is grounded (connected) to the chassis. If negative post is grounded to chassis (as in most vehicles), see f.e. For a negative-grounded vehicle, connect POSITIVE (RED) clip from battery charger to POSITIVE (POS, P, +) ungrounded post of the battery. Connect NEGATIVE (BLACK) clip to vehicle chassis or engine block away from the battery. Do not connect the clip to carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gauge metal part of the frame or engine block.
    f. For a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip from the battery charger to the NEGATIVE (NEG, N, –) ungrounded post of the battery. Connect POSITIVE (RED) clip to vehicle chassis or engine block away from the battery. Do not connect the clip to carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gauge metal part of the frame or engine block.
    g. When disconnecting the charger, turn switches off, disconnect the AC cord, remove the clip from the vehicle chassis, and then remove the clip from the battery terminal.
    h. See operating instructions for length of charge information.

16. FOLLOW THESE STEPS WHEN THE BATTERY IS OUTSIDE THE VEHICLE. A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE RISK OF A SPARK NEAR BATTERY:
    a. Check the polarity of battery posts. POSITIVE (POS, P, +) battery post usually has a larger diameter than NEGATIVE (NEG, N, –) post.
    b. Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to NEGATIVE (NEG, N, –) battery post.
    c. Connect POSITIVE (RED) charger clip to POSITIVE (POS, P, +) post of the battery.
    d. 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.
    e. Do not face battery when making final connection.
    f. When disconnecting the charger, always do so in the reverse sequence of connecting procedure and break the first connection while as far away from the battery as practical.
    g. A marine (boat) battery must be removed and charged onshore. To charge it on board requires equipment specially designed for marine use.

17. Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves whenever connecting, disconnecting, or working near battery acid can cause permanent blindness.

18. Maintain labels and nameplates on the charger. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

19. This product is not a toy. Keep it out of reach of children.

20. Unplug the Battery Charger from its electrical outlet before connecting its cables to a battery, or performing any inspection, maintenance, or cleaning procedures.

21. Use this charger with flooded lead-acid batteries only. When charging a maintenance-free battery, always monitor the progress of the charge by viewing the Charge Meter. Do not overcharge a maintenance-free battery.

22. Do not attempt to charge non-rechargeable or defective batteries.

23. Do not charge more than one battery at one time.

24. Has your charger been serviced by a qualified repair person using only identical replacement parts? This will ensure that the safety of the charger is maintained.

25. Do not use a charger while you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating charger may result in serious personal injury.

26. Before moving the charger, disconnect the power supply and battery, then allow the charger to cool.

27. People with pacemakers should consult their physician(s) before use. Electromagnetic fields in close proximity to the heart pacemakers could cause pacemaker interference or pacemaker failure. In addition, people with pacemakers should:
    • Avoid operating alone.
    • Properly maintain and inspect to avoid electrical shock.
    • Properly ground power cord. Ground Fault Circuit Interrupter (GFCI) should also be implemented
    – it prevents sustained electrical shock.

28. The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors that cannot be built into this product but must be supplied by the operator.

SAVE THESE INSTRUCTIONS

FCC Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Specifications

Red = Positive Black = Negative

Operating Instructions

Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product

WARNING
TO PREVENT SERIOUS INJURY:
Assemble charger according to Assembly Instructions before use. DO NOT PLUG IN CHARGER UNTIL DIRECTED TO DO SO.

Controls:

preparing to charge

WARNING
Use this charger only on flooded lead-acid batteries.
Other batteries may be damaged or may overheat, leak, or catch fire.

TO PREVENT SERIOUS INJURY:

Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves whenever connecting, disconnecting, or working near the battery. battery acid can cause permanent blindness.

NOTICE: NOT RECOMMENDED FOR DEEP CYCLE MARINE BATTERIES.

1. If necessary to remove the battery from the vehicle to charge, 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. Make sure the area around the battery is well ventilated while the battery is being charged.

3. Clean battery terminals. Be careful to keep corrosion from coming in contact with eyes.

4. Add distilled water in each cell until battery acid reaches the level specified by the battery manufacturer.
   Do not overfill. For a battery without removable cell caps, such as valve- regulated lead-acid batteries, carefully follow the manufacturer’s recharging instructions.

5. Study all battery manufacturer’s specific precautions while charging and recommended rates of charge.

6. Determine voltage of battery by referring to vehicle owner’s manual and make sure it matches output rating of the battery charger. If the charger has an adjustable charge rate, charge the battery initially at the lowest rate.

7. A marine (boat) battery must be removed and charged onshore. To charge it on board requires equipment specially designed for marine use.
   DO NOT CHARGE A FROZEN BATTERY.
   BATTERIES WITH HYDROMETER EYE:
   Do not depend on hydrometer eye to determine battery charge level.

Charger Location

1. Locate charger as far away from battery as DC cables permit.
2. Never place charger directly above battery being charged; gases from battery will corrode and damage the charger.
3. Never allow battery acid to drip on the charger when reading electrolyte specific gravity or filling the battery.
4. Do not operate charger in a closed-in area or restrict ventilation in any way.
5. Do not set a battery on top of the charger.

WARNING! TO PREVENT SERIOUS INJURY, FIRE, AND PROPERTY DAMAGE:
Monitor charging during use

Charging Battery Installed in Vehicle

**WARNING**

A SPARK NEAR THE  BATTERY MAY CAUSE A  BATTERY EXPLOSION.
TO REDUCE THE  RISK OF A SPARK NEAR THE BATTERY FOLLOW THESE INSTRUCTIONS EXACTLY.

TO PREVENT SERIOUS INJURY:  Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves whenever connecting, disconnecting, or working near the battery. Battery acid can cause permanent blindness.

1. Position AC and DC cables 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 battery is grounded (connected) to the chassis. If negative post is grounded to chassis (as in most vehicles), see
5. If a positive post is grounded to the chassis, see 6.
6. For a negative-grounded vehicle, connect  POSITIVE (RED) clip from battery charger to POSITIVE (POS, P, +) ungrounded post of the battery. Connect NEGATIVE  BLACK) clip to vehicle chassis or engine block away from the battery. Do not connect the clip to carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gauge metal part of the frame or engine block.

Charging Battery Outside Vehicle

WARNING
A SPARK NEAR THE  BATTERY MAY CAUSE A  BATTERY EXPLOSION. TO REDUCE THE  RISK OF A SPARK NEAR THE  BATTERY FOLLOW THESE  INSTRUCTIONS EXACTLY.

TO PREVENT SERIOUS INJURY: Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves whenever connecting, disconnecting, or working near the battery. Battery acid can cause permanent blindness.

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.
3. Connect POSITIVE (RED) charger clip to 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 battery when making the final connection.
6. When disconnecting the charger, always do so in the reverse sequence of connecting procedure and break the first connection while as far away from the battery as practical.
7. After use clean, then store the charger indoors out of children’s reach

Operation

WARNING
A SPARK NEAR THE  BATTERY MAY CAUSE A  BATTERY EXPLOSION. TO REDUCE THE  RISK OF A SPARK NEAR THE  BATTERY FOLLOW THESE  INSTRUCTIONS EXACTLY.

TO PREVENT SERIOUS INJURY:  Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves whenever connecting, disconnecting, or working near the battery. Battery acid can cause permanent blindness.

1. Follow directions on page 8 to connect Charger to the battery, then plug Power Cord into a properly grounded outlet.
   note: If Fault LED lights, unplug Charger and check that cable connection are correct.

2. Press the Mode Button to choose voltage.

3. When a good connection has been made, Voltage and Standby LEDs will light, and Charging Indicator LEDs will display charging status.

4. Charging is complete when 100% Charging Indicator LED is lit. the charger will go into trickle charge mode, which requires monitoring by the user.

5. When finished, unplug Power Cord, then disconnect the negative (BLACK) clamp, then remove the positive (RED) clamp.

6. After use clean, then store Charger indoors out of children’s reach.

Maintenance instructions

**** procedures not specifically explained in this manual must be performed only by a qualified technician.

WARNING
TO PREVENT SERIOUS INJURY: Unplug the charger, disconnect any battery, and allow the charger to cool completely before performing any inspection, maintenance, or cleaning procedures.  
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment. If abnormal noise or vibration occurs, have the problem corrected before further use.

1. BEFORE EACH USE, inspect the general condition of the charger. Check for:
   • loose hardware,
   • cracked or broken parts,
   • damaged electrical wiring or cable insulation, and
   • any other condition that may affect its safe operation.

2.  AFTER USE, wipe the external surfaces of the tool with a clean cloth.

3. WARNING! TO PREVENT SERIOUS INJ URY: If the supply cord of this charger is damaged, it must be replaced only by a qualified service technician.
   DO NOT OPEN CHARGER HOUSING, NO USER-SERVICEABLE PARTS INSIDE.

Note: Reference UPC 792363570152.

Troubleshooting

Problem

| Possible Causes|

Likely Solutions

---|---|---
Unit not charging – LEDs not shown.| 1. No power to the charger.
2. Battery cables not making a connection.
3. Battery voltage too low or battery is bad.| 1. Check power and cable outlet connections.
2. Clean battery cables and reset cable clamps.
3. Check and/or replace the battery, use a different charger.
Charging current not to full output.| 1. Battery is partially charged.
2. Defective battery, will not hold a full charge.| 1. Continue charging the battery.
2. Check and/or replace the battery.
**Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.**

LED Indicators

LED Indicator|

Meaning

---|---
Battery Charge Level/Charge Status| 1. Battery Charge Level: 20%-40%-60%-80%-100%
2. Charging: LEDs light up from left to right.
3. Fully Charged: All LEDs light up constantly.
Standby| This indicates the charger is powered and ready for use.
Fault| Indicates there is an error or fault, such as reversed polarity or short circuit.
6V| 6V mode
12V| 12V mode

Limited 90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to issue,  abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear, and tear, or lack of maintenance. We shall n no event be liable for death, injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY  N LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage f this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product. This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

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