Severely Discharged Battery, Charging

Severely Discharged Battery, Charging

Special tools, testers and auxiliary items required

• Battery Charger (VAS 5903)


Risk of injury. Observe the warnings and safety precautions => [ Dangers When Working with Batteries ] Dangers When Working with Batteries!


Do not check or charge a battery 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.

The battery must be replaced.


• The polarity protection of the charger clamps is not active in the operation mode "charging severely discharged batteries/Support mode". Connect the charger clamps to the battery terminals correctly according to polarity!

• Always set the operating mode that corresponds to the battery. Refer to the Operating Instructions for the (VAS 5903).

• The (VAS 5903) does not detect a severely discharged battery, refer to => [ Severely Discharged Batteries ] Severely Discharged Batteries.

• Do not touch START/STOP if the charge clamps are connected incorrectly! The (VAS 5903) can be damaged.

The (VAS 5903) will not automatically recognize the battery if the battery voltage is less than 2 volts.

• Read the information in the chapter => [ Severely Discharged Batteries ] Severely Discharged Batteries.

• The battery temperature must be minimum 10 °C (50° F).

• Severely discharged batteries in vehicles must be replaced prior to delivery. Pre-existing damage cannot be ruled out.

Procedure


• Switch off the ignition and all electrical consumers.

• Remove the key.

- Connect the (VAS 5903). The last selected operation mode is shown on the display, refer to => [ Battery Charger VAS 5903 ] Battery Charger VAS 5903.

- Press the INFO button to select the battery type.






The symbol - 1 - for service charging of wet batteries or the symbol - 2 - for service charging of Gel/Absorbent Glass Mat (AGM) batteries is indicated in the display.

- Set the battery capacity (Ah) on the battery to be charged with the corresponding [Up Arrow] or [Down Arrow] button.

- Attach the red charging clamp (+) to the battery positive terminal.

- Connect the black charging clamp (-) to the negative terminal on the battery/negative connector.

- Press the START/STOP button for approximately 5 seconds. The menu selection "Charging severely discharged batteries/Support mode" is activated.

- Press the [Up Arrow] or [Down Arrow] button to set the battery voltage (6 V/ 12 V /24 V).

• If no button is touched within 5 seconds, the (VAS 5903) will return to the main menu (operating mode selection).

- Confirm selected battery voltage with START/STOP button.

Then the inquiry about the correct polarity of the charger clamps is made.

- Verify that the charger clamps are connected to the correct polarity.

- Confirm charging clips are connected to correct poles via START/STOP.

The (VAS 5903) begins charging the severely discharged battery.

End the battery charging process

- Press START/STOP button.

- Remove the charger clamps from the battery terminals.

- Disconnect the (VAS 5903).