Battery and Cables - System Operation and Component Description
System Operation
Battery and Cables
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 cable has a battery current sensor and a generator current sensor attached to the cable. Refer to: Charging System - System Operation and Component Description (414-00 Charging System - General Information, Description and Operation).
NOTE: The 5.2L Ti-VCT (SVT) vehicles do not have state-of-charge battery eye.
NOTE: The primary purpose of the battery eye is to be a quick indicator of the battery's state-of-charge for the dealership pre-delivery process.
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 display a different color in the viewing eye.
Do not install a new battery based only on the battery eye color. 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.
Red - low state-of-charge Yellow/Black - between high and low state-of-charge Green - high state-of-charge No color can occur after the battery has been in service for several years and some of the plate material has coated the balls A clear battery eye can occur if the battery case becomes damaged and the electrolyte has fallen below the plates
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