3-18 Engine Electrical Industrial 1.6L
Battery Hydrometer Displays Dark or
Yellow Dot
The maintenance–free battery has a built–in hydrom-
eter which consists of a ball floating in the electrolyte.
The hydrometer is temperature–compensated. The
color of the hydrometer indicates the condition of the
battery.
• A green dot appearing on the hydrometer
means that the battery is ready for testing.
• A dark hydrometer with no green visible means
that the battery has a low charge.
Refer to Charging System Check or Battery
Electrical Drain/Parasitic Load.
• A clear or light yellow color means that
the battery fluid level is below the bottom of the
hydrometer. Replace the battery if its condition
affects the cranking system. A low fluid level
can be caused by any of the following
conditions:
- An excessive charge
- Tipping the battery
- A faulty charging system. Refer to Charging
System Check.
Battery Is Undercharged or Overcharged
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