Using Electrolyte Specific Gravity Method

Remove the battery filler caps and check the water level.
- If necessary, add water to the appropriate level.
Measure the electrolyte specific gravity using a hydrometer.
- If it is less than the specification, recharge the battery. (See BATTERY RECHARGING .)
Battery electrolyte specific gravity [20°C {68°F}]

1.22-1.29