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 .)

Battery electrolyte specific gravity 

1.22-1.29 [20 °C {68 °F}]