Refresh Charging With Battery Charger VAS 5903: Notes
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.
"Refresh charging" is not permitted for VW vehicles, because voltage surges can damage the on-board electronics.
The Battery -A- must always be disconnected from the vehicle electrical system when using the "Refresh charging" mode.
Always set the mode that corresponds to the Battery -A- during the charging process, refer to the Battery Charger VAS 5903 Operating Instructions.
"Refresh Charging" is suitable for wet batteries, which must be filled with distilled water.
Do not use "refresh charging" mode on maintenance-free wet batteries.
"Refresh charging (Refr)" mode is only used on Batteries -A- that are possibly defective (sulfation). The Battery -A- is then charged to the maximum specific gravity of the electrolyte and the plates are reactivated (removal of sulfation layer).
Special Tools And Workshop Equipment Required
- Battery Charger VAS 5900