AC 5222BL
TEMPERATURE COMPENSATION
BATTERY TEMPERATURE
DECREASE BATTERY RATING BY:
1 STEP = 50 cranking amps.
If the tester indicates poor battery condition, allow the battery to stabilize for a few minutes and check the open
circuit voltage by voltmeter. This is a good measure of the percent charge in the battery. The battery is considered
charged if it measures 75% or more. If it failed the load test with 75% charge, it should be replaced. If the battery
charge measures less than 75%, it should be charged and load tested again. Replace the battery if it fails again.
The values in the following charge are for a 12 volt battery:
OPEN CIRCUIT VOLTS
11.7 Volts or lower
12.6 or higher
TESTING THE CHARGING SYSTEM - after load test
1.
Remain connecting the tester the same after battery testing. Click "ENTER" to this stage. "TEST STATE -CHAR-
GING AND LED LIGHT" will be on.
2.
Start the engine and allow it to reach normal operating temperature.
3.
Run engine at 1200 to 1500rpm. CAUTION: Stay clear of moving engine parts.
4.
Read the meter. A reading in the red LED light indicates a problem in the charging system that will under-
charge a battery (less than 13.6V), or overcharge the battery (over 14.8v) .Please refer to volts meter.
STARTER MOTOR TEST (12VOLT VEHICLES)
This test identifi es excessive starter current draw, which makes starting diffi cult and shortens battery life. Perform
battery load test-proceed to make sure if battery is GOOD.
ENGINE MUST BE AT NORMAL OPERATING TEMPERATURE
1. Connect negative (black) clamp to the negative (NEG, N, -) battery post. Connect positive (red) clamp to the
positive (POS, P, +) battery post. ROCK clamps back and forth to ensure a good electrical connection. Do not click
"ENTER".
2. Disable the system ignition so the car will not start.
3. Crank the engine and note the voltage reading during cranking.
4. A meter reading of 9 volts or less indicates excessive current draw. This may be due to bad connections or a
failing starter motor, or the battery is too small for the vehicle's requirements.
12V BATTERY TESTER
+20˚F
1 STEP
12.0
12.2
12.4
0˚F
-20˚F
2 STEP
3 STEP
PERCENT OF CHARGE
0
25
50
75
100