Standard Procedure - Checking Battery Electrolyte Level

The following procedure can be used to check the electrolyte level in a low-maintenance lead-acid battery.

1. Unscrew and remove the battery cell caps with a flat-bladed screw driver (Fig 1 ).
   Fig 1: Identifying Battery Cell Cap

   Courtesy of DAIMLERCHRYSLER CORP.
   WARNING: NEVER PUT YOUR FACE NEAR A GASSING, HOT OR SWELLED BATTERY. SERIOUS PERSONAL INJURY MAY RESULT.
2. Wearing safety glasses, look through the battery cell cap holes to determine the level of the electrolyte in the battery. The electrolyte should be above the hooks inside the battery cells (Fig 2 ).
   Fig 2: Identifying Hook Inside Battery Cells - Low-Maintenance Battery Only

   Courtesy of DAIMLERCHRYSLER CORP.
3. Add only distilled water  until the electrolyte is above the hooks inside the battery cells (Fig 2 ).