Using Electrolyte Specific Gravity Method

1. Remove the battery filler caps and check the water level.
   • If necessary, add water to the appropriate level.
2. Measure the electrolyte specific gravity using a hydrometer.
   • If it is less than the specification, recharge the battery. (See BATTERY RECHARGING (US) .)

   Battery electrolyte specific gravity [20 °C {68 °F}] 

   1.22-1.29

Using Battery Voltage Method: 

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

   Step	Inspection	Results	Action
   1	Measure the battery positive voltage.	12.4 V or more	Go to Step 3.
   		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.
   		Less than 12.4 V	Replace the battery.
   3	Using the battery load tester, apply load current (see battery load test current) and record battery voltage after 15 s. Is voltage more than the specification?	Yes	Normal
   		No	Replace the battery.

   Battery load test current 

   LN2 (60 A.h/20HR): 195 A