2. Hydrometer Check

There is a built-in hydrometer (Charge test indicator (1)) at the top of the battery. It is designed to be used during diagnostic procedures.

Before trying to read the hydrometer, carefully clean the upper battery surface.

If your work area is poorly lit, additional light may be necessary to read the hydrometer.

a. BLUE RING OR DOT VISIBLE (5) - Go to Step 4.
b. BLUE RING OR DOT NOT VISIBLE (4) - Go to Step 3.