Volkswagen Golf Service & Repair Manual: Charging battery in refresh charge mode with battery charger -VAS 5903-
WARNING
| Danger of injury! Observe warning notices and safety
regulations
→ Chapter! |
|
WARNING
| It is not permissible to test or charge batteries
whose magic eye shows light yellow. Do not slave/jump
start the vehicle! |
| Danger of explosion when checking and charging or
slave/jump starting. |
| These batteries must be renewed. |
|
Caution
| The operating mode “refresh charge” is not permitted
on VW vehicles as the voltage peaks will damage the
onboard electronics. |
| If there is a requirement to use “refresh charge”
mode the battery must be disconnected from the onboard
supply. |
|
Caution
| When charging always set the battery charger to the
correct type of battery
→ operating instructions for battery chargerVAS 5903! |
| The “refresh charge” mode is suitable for: |
| Wet batteries, where distilled water can be
replenished. |
| Do not use operating mode “refresh charge” with
maintenance-free wet batteries. |
|
| The “refresh charge (refr)” operating mode is only used on
batteries suspected of being defective (e.g. sulphation). The
battery will be charged to maximum specific gravity and the
plates will be reactivated (dissipation of sulphur layer). |
| Special tools and workshop equipment
required |
|
|
|
| Battery charger -VAS 5900- |
 Note
| The battery must have a temperature of at least 10°C. |
| – |
Switch off ignition and all electrical consumers. |
| – |
Connect charger plug to battery charger. The last selected
operating mode will appear on display
→ Chapter. |
|
|
|
| – |
Set battery to respective operating mode with
INFO. |
| In the display the symbol -1-
for “refresh charge for wet batteries” or symbol
-2- for “refresh charge for
gel/absorbent glass mat batteries” will appear. |
| – |
Set battery capacity (Ah) of battery for charging using
respective button “Up”↑ or “Down”↓. |
| – |
Connect red terminal clamp “+” to positive terminal on
battery. |
Note
| In vehicles with start/stop function and battery monitor
control unit -J367- fitted, black terminal clamp must be
connected to body earth. Connecting it to battery negative
terminal will cause start/stop system to malfunction. |
| – |
Connect black terminal clamp “-” to negative terminal. |
| The charger unit recognises the voltage required for the
connected battery (6 V, 12 V or 24 V) and initiates the charging
sequence. |
|
|
|
| At a charge condition of approx. 80 - 85% of the battery
voltage, the battery charger switches to the “final charge”
mode. The fourth bar appears in display
-1-. The battery is ready for use. |
Note
| The success of the “refresh charge” depends on the severity
of the sulphation of the battery. |
| Possible faults and fault rectification: |
| 1 - |
Displayed battery voltage is not as per nominal voltage: |
| – |
Press respective button “Up”↑ or
“Down”↓ until charging sequence
starts. |
| 2 - |
Displayed battery voltage is not as per nominal voltage –
charging sequence already started: |
| – |
Press START / STOP twice. |
| – |
Press respective button “Up”↑ or
“Down”↓ until charging sequence
starts. |
| 3 - |
Battery charger does not detect a battery, when battery
voltage is less than 2 V: |
| Display remains unchanged. |
| The operating mode and ampere hours (Ah) as set are
displayed. |
| Ending battery charging sequence: |
| – |
Disconnect black terminal clamp “-” of charger from negative
terminal. |
| – |
Disconnect red terminal clamp “+” of charger from positive
terminal on battery. |
| – |
Pull charger plug out of battery charger. |
|
|
 |
WARNING
Danger of injury! Observe warning notices and safety
regulations
→ Chapter!
...
WARNING
Danger of injury! Observe warning notices and safety
regulations
→ Chapter!
...
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Charging battery with battery charger -VAS 5903
Charging totally discharged battery with battery charger -VAS 5903-