Battery Test

BATTERY TEST

BATTERY TESTING PROCEDURE
STEP 1. Check the battery cables.

Remove the negative cable, then the positive cable.
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.

STEP 2. Check the battery post.

Check for loose battery post.

Q. Are the battery posts faulty?

YES Replace the battery. Then go to Step 4.

NO Go to Step 3.

STEP 3. Check the battery case.

(1)Remove the hold-downs.

(2)Check for broken/cracked case.

Q. Is the battery case faulty?

YES Replace the battery. Then go to Step 4.

NO Go to Step 4.

STEP 4. Check the open circuit voltage.

(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.

STEP 5. Battery charging

Charge the battery. (See CHARGE RATE CHART Procedures)

Q. Is open circuit voltage 12.4 volts or more?

YES Go to Step 6.

NO Replace the battery.

STEP 6. Check the load test.

(1)Connect a load tester to the battery.

(2)Load the battery at the recommended discharge rate (See LOAD TEST RATE CHART) 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.)

Q. Is the voltage higher than minimum voltage?

YES The battery is normal.

NO Replace the battery.

LOAD TEST CHART





LOAD TEST RATE CHART





Graph 1