Harbor Freight Tools 12V Battery Product manual

READ AND UNDERSTAND ALL WARNINGS AND

To prevent injury and property damage:

Keep away from children.1.
Wear ANSI-approved safety goggles and heavy-duty work gloves during use. Remove any 2.
jewelry before working on vehicle’s battery.
Use as intended only.3.
Inspect before every use; do not use if damaged.4.

INSTRUCTIONS BEFORE USE.

To Test an Alternator:

1. With the car located in a well-ventilated area (due to risk of carbon

monoxide poisoning), the parking brake set, all accessories off, and the

transmission in neutral/park, start the car and allow car to run for several
minutes. Plug in meter.

2. Read scale from the left part of the tester and compare with following chart:

LEDs Lit

Red Green Yellow

YES YES YES >14.8 Overcharging

NO YES YES 13.4-14.8 Normal

NO NO YES 13.2-13.4 Charging Inadequately

NO NO NO < 13.2 Malfunctioning

Approx.

Voltage

Alternator

Status

To Test a Battery:

1. With the car’s engine cold (at least 30 minutes after last use) and all

accessories off, turn the key to the accessory or on position without starting
the engine. Plug in the meter.

2. Read scale from the right part of the tester and compare with following chart:

LEDs Lit

Red Yellow Green

YES YES

YES YES NO 12.1-12.4 Weak

YES BLINK NO 11.8-12.1 Almost Dead

YES NO NO < 11.8 Dead

Note: The charts above assume that the rest of the car is in perfect repair. Poor

connections, wiring problems, or many other factors can cause a poor reading.
Always have a professional mechanic thoroughly investigate any automotive
problems before performing repairs.

Approx.
Voltage

YES >12.6

BLINK 12.4-12.6

Battery

Status

Fully Charged

CAUTION

SAVE THESE INSTRUCTIONS.

For technical questions, please call 1-800-444-3353.