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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Charging System (Battery, Starter, Generator) & Cruise Control (Battery & Charging) (Coupe)) >> 27 Starter, Generator And Cruise Control >> Battery, Charging >> Severely Discharged Batteries >> Notes

Severely Discharged Batteries: Notes

WARNING: This page is about a different variant/trim than selected.
WARNING:

Risk Of Injury. Follow All Warning Messages And Safety Precautions. Refer To WARNINGS AND SAFETY PRECAUTIONS .

A Battery -A- is designated as "Severely Discharged" If The Resting Voltage Is Less Than 11.6 V. 

WARNING:

Do Not Check Or Charge A Battery -A- When The Visual Indicator Has >>No Color Or Is Bright Yellow<<. Jump Starting Must Not Be Used!

There Is A Risk Of Explosion During Testing, Charging Or Jump Starting.

These Batteries -A- Must Be Replaced.

CAUTION:
  • Severely Discharged Batteries -A- Freeze Earlier.
  • Batteries -A- That Have Frozen Must No Longer Be Used.
NOTE:

Batteries -A- That Have Not Been Used For A Long Time Will Discharge By Themselves.

In Severely Discharged Batteries -A-, The Electrolyte Consists Almost Completely Of Water, Because The Acid Portion Has Been Greatly Reduced.

Severely Discharged Batteries -A- Become Sulfated, Meaning All Of The Plate Surfaces Of The Batteries -A- Harden.

The Sulfation Process May Be Reversed If A Severely Discharged Battery -A- Is Recharged Immediately.

If The Battery -A- Is Not Recharged, The Plates Will Continue To Harden, And The Ability To Accept A Charge Will Decrease. This Results In Reduction Of Battery Performance.

Severely Discharged Batteries -A- In Vehicles Must Be Replaced Prior To Delivery. Pre-Existing Damage Cannot Be Ruled Out.