Using Battery Voltage Method

Inspect the battery as follows after removing the battery filler caps, checking the water level, and adding water to the appropriate level if needed:

STEP	INSPECTION	RESULTS	ACTION
1	Measure the battery positive voltage.	12.4 V or more	Go to Step 3.
1	Measure the battery positive voltage.	Less than 12.4 V	Go to the next step.
2	Quick charge for 30 min and recheck voltage.	12.4 V or more	Go to the next step.
2	Quick charge for 30 min and recheck voltage.	Less than 12.4 V	Replace the battery.
3	Using the battery load tester, apply load current (See battery load test current below) and record battery voltage after 15 s. Is voltage more than the specification?	Yes	Normal
3		No	Replace the battery.

Battery load test current

55D23L (60 A.h/20HR): 180 A

75D23L (65 A.h/20HR): 195 A