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Battery, Mounting and Cables - Except Electric: Overview Ford Focus III

Charging System ~184 words

Overview

The battery and cable system consists of the following components

  1. Battery
  2. Battery tray
  3. High current BJB
  4. Positive battery cable
  5. Negative battery cable including a battery monitoring sensor

System Operation

The battery is a 12V DC source connected in a negative ground system and is a voltage stabilizer for the 12V electrical system.

The battery eye indicates the battery state-of-charge by responding to the specific gravity of a single battery cell electrolyte. The battery eye has a viewing plate, 2 colored balls of different specific gravity and a small passage. As the battery's state-of-charge and specific gravity changes, the balls change their position in the passageway and subsequently display a different color in the viewing eye.

Do not install a new battery based solely on the indication of the battery eye. The battery eye color simply indicates the battery state-of-charge, not its condition. For example, a red or yellow/black battery eye usually indicates the battery is discharged, not defective. If the battery eye indicates the battery may be discharged, recharge the battery before testing its condition.