Maintenance -Free Battery Testing
VISUAL INSPECTION
CAUSE REMEDY
Visible damage, terminal leakage, etc Cannot be used. Replace.
ELECTROLYTE LEVELS & STATE OF CHARGE NOTE: PROCEED DIRECTLY TO
CAUSE THAT APPLIES
CAUSE REMEDY
Level at top of plates. Water cannot be added Replace
If there is an indicator and it shows low level Replace
Level OK, unknown, or water can be added.
Stabilized voltage below 12.4 volts*
Add water if needed (if possible). Charge,
then turn on high-beam head lamps (or 15
amp load for 15 seconds). Proceed to load
test.
If there is an indicator and it shows low charge Charge, then turn on high-beam head lamps
(or 15 amp load for 15 seconds). Proceed to
load test.
Stabilized voltage above 12.4 volts* or
indicator indicates charged
Perform load test
LOAD TEST
Perform load test using the following procedure:
1. Connect voltmeter and ampere load equal to 1/2 cold cranking amperes @ 0°F (-18°C)
rating of battery for 15 seconds.
2.
Observe voltage at 15 seconds with load on.
3. Refer to voltage chart
If the voltage remains below the voltage chart levels, replace battery. If the voltage is equal
to or above chart values, return to service.
VOLTAGE CHART
ESTIMATED ELECTROLYTE TEMPERATURE MINIMUM REQUIRED
VOLTAGE UNDER 15
SECOND LOAD
70° (21° C) & ABOVE 9.6
60° (16° C) 9.5
50° (10° C) 9.4
40° (4° C) 9.3
30° (-1° C) 9.1
427P/N 12261-683 REVISED: January 2015
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