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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.
Prepare Battery For Testing
1. To help ensure a good connection, wipe battery
terminals with a cloth to remove any dirt and grease.
2. Make sure the battery is charged to at least
75% on an open-circuit voltage before load
test. You can connect tester to the battery
without turning on the load to confirm battery
voltage. (see Open Circuit Voltage section for
Percentage of Charge determination on page 6.)
3. Identify available battery CCA (Cold Cranking
AMPS), and/or AH (AMP-Hour) This
information is usually located on the battery
label and in your vehicle owner's manual.
Prepare Tester
1. IMPORTANT: During the first use of the Tester,
you will notice smoke and/or a burning smell.
This is normal and temporary. Also note that the
moisture build up on the internal components
may have caused this vapor temporarily.
2. Make sure there is nothing blocking the
cooling vents on both sides of the Tester.
3. Place the Tester on a sturdy surface.
4. Make sure the Test Cables are away
from engine belt and fan.
Determine Load (or Amps) for Test Use
1. Load (AMPS) needed is 1/2 of the
CCA rated on the battery.
Example: Battery is rated at 800 CCA - AMPS load
needs to be set to 400A on the Amp Gauge. Apply the
same method if battery is MCA (Marine Crank AMPS).
2. A battery with AH requires 3x the rated AH.
Item 58933
For technical questions, please call 1-888-866-5797.
Note: For flooded battery type, make sure distilled
water is filled to designated level before testing.
Note: A battery that has just finished charging, or
the vehicle's engine has just shut down, needs to
stabilize for 15 minutes or remove the surface charge
by turning on the head lamps on high beam for 4-6
seconds before battery test can be performed.
Note: If the battery is outside of the vehicle, connect the
tester clamps to the battery posts. Make sure load test
is set to OFF before connecting to battery posts, then
turn Load Knob to approximately 60A for 4-6 seconds.
5. Inspect the Tester for any cracks or damages
on the enclosure, cables and clamps.
6. Make sure the gauge needle is in line with the 0
mark. If not, use a flat head screw driver to adjust
the needle by turning the Gauge Zero Adjuster
screw until the needle lines up at the 0 mark.
7. Make sure the Voltage Selection is set according
to the voltage of the battery being tested.
8. Make sure the Variable Load Adjustable
Knob is set to zero or OFF.
Example: The AH battery is rated at 18 AH, The AMPS
load needs to be set to 54A on the AMP Gauge.
Page 5
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