Battery Testing Procedure

1. Remove the negative cable, then the positive cable.
2. Check for dirty or corroded connections.

Q: Are the battery cables dirty or have corroded connections? 

• YES:  Clean the battery cables. Then go to Step 2.
• NO:  Go to Step 2.

Check for loose battery post.

Q: Are the battery posts loose? 

• Yes:  Replace the battery.
• NO:  Go to Step 3.

1. Remove the hold-downs and shields.
2. Check for broken/cracked case or cover.

Q: Is the battery case or cover faulty? 

• YES:  Replace the battery.
• NO:  Go to Step 4.

1. Turn headlights on for 15 seconds.
2. Turn headlights off for two minutes to allow battery positive voltage to stabilize.
3. Disconnect the battery cables.
4. Read open circuit voltage.

Q: Is open circuit voltage 12.4 volts or more? 

• YES:  Go to  Step 6.
• NO:  Go to Step 5.

Charge the battery. (See CHARGE RATE CHART  )

Q: Is open circuit voltage 12.4 volts or more? 

• YES:  Go to Step 6.
• NO:  Replace the battery.

1. Connect a load tester to the battery.
2. Load the battery at the recommended discharge rate (See LOAD TEST RATE CHART below ) for 15 seconds.
3. Read voltage after 15 seconds, then remove load.
4. Compare the measured value with the minimum voltage. (See LOAD TEST CHART below .)

Q: Is the voltage higher than minimum voltage? 

• YES:  The battery is normal.
• NO:  Replace the battery.

  LOAD TEST CHART 

  Temperature °C (°F)	21 (70) AND ABOVE	16 (61) to 20 (68)	10 (50) to 15 (59)	4 (40) to 9 (48)	-1 (31) to 3 (37)	-7 (20) to -2 (28)	-12 (11) to -8 (17)	-18 (0) to -13 (8)
  Minimum voltage	9.6	9.5	9.4	9.3	9.1	8.9	8.7	8.5

  LOAD TEST RATE CHART 

  Load test	Cranking ratio [-18°C (0°F)]	Reserve capacity	Application
  260 AMPS	530 amps	118 minutes	BCI Group size 35

  LOAD TEST RATE CHART (2016) 

  Load test	Cranking ratio [-18°C (0°F)]	Reserve capacity	Application
  260 AMPS	520 amps	118 minutes	75D23L