Operation CHARM: Car repair manuals for everyone.

Battery Built-In Hydrometer Check

NOTE: Before testing battery, lightly tap eye of hydrometer to ensure that gas bubbles have not lodged themselves in hydrometer. If battery needs replacement, check charging system for proper operation.

IMPORTANT: Do not charge a battery with a clear or yellow indicator.







Tap lightly on the eye and observe the built-in hydrometer.

IMPORTANT: Check electrical system before replacement.