Refresh Charging With Battery Charger :Vas5903: Procedure

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

-- Turn Off The Ignition And All Electrical Consumers And Remove The Ignition Key.

-- Connect The :VAS5903 To The Power Supply. The Last Selected Operation Mode Is Shown On The Display. Refer To BATTERY CHARGER .

-- Set The Battery Type With The INFO Button.

Courtesy of AUDI OF AMERICA, LLC

The Symbol -1- For "Refresh - Charging Wet Batteries" Or The Symbol -2- For "Refresh - Charging Of Gel/Absorbent Glass Mat (AGM) Batteries" Is Indicated In The Display.

-- Set The Battery Capacity (Ah) On The Battery -A- To Be Charged With The Corresponding ↑ Button Or ↓ Button.

-- Connect The Red Charge Terminal (+) To The Positive Terminal Of The Battery -A-.

NOTE:

On Vehicles With A Start/Stop Function And An Installed Battery Monitoring Control Module -J367-, The Black Charge Terminal (-) Must Be Connected To The Body Ground. The Start/Stop System Will Malfunction When It Is Connected To The Battery -A- Negative Terminal.

-- Connect The Black Charge Terminal (-) To The Negative Terminal Of The Battery -A- /Negative Connector.

The :VAS5900 Recognizes The Nominal Voltage Of The Connected Battery -A- (6 V/12 V/24 V) And Begins The Charging Process Automatically.

The :VAS5900 Begins The "Final Charging" When The Charge Level Is Approximately 80 To 85 % Of The Battery Voltage. The Fourth Bar Is Indicated On The Display -1-. The Battery -A- Is Now Ready To Be Used.

Courtesy of AUDI OF AMERICA, LLC

NOTE:

A Successful "Refresh Charge" Depends On The Degree Of Sulfation On The Battery -A-.

Possible Malfunctions And How They Are Handled

Displayed voltage does not match the nominal voltage:
-- Hold Down The ↑ Button Or ↓ Button Until The Charging Process Begins.
Displayed Battery Voltage Does Not Match Rated Voltage - Charging Process Has Already Begun:
-- Press The START/STOP Button Two Times.

-- Hold Down The ↑ Button Or ↓ Button Until The Charging Process Begins.
The Charger Does Not Recognize A Battery -A-, When The Battery Voltage Is Less Than 2 V:
The Display Remains Unchanged.

The Set Operating Mode And Ampere-Hours (Ah) Are Displayed.

Battery -A- Charging, Ending

-- Press the START/STOP -Button.

-- Remove The Charging Clamps From The Battery Terminals.

-- Disconnect The :VAS5903 From The Power.