Severely Discharged Batteries

Severely Discharged Batteries

CAUTION:
- Risk of injury. Observe warning notes and safety precautions.
- Batteries that have a colorless or light yellow visual indicator must not be tested or charged. Jump starting must not be used
- There is a risk of explosion during testing, charging or jump starting.
- These batteries must be replaced.
- Severely discharged batteries freeze earlier.
- Batteries that have frozen must no longer be used.

For a battery to be indicated as "severely discharged", the resting voltage must be less than 11.6 V.

NOTE:
- Batteries which have not been used in driving operation for a long time, for example in stored vehicles, discharge themselves.
- In severely discharged batteries, the electrolyte consists almost completely of water, because the acid portion has been greatly reduced.
- Severely discharged batteries become sulfated, meaning that the complete plate surfaces of the battery harden.
- The sulfating process may be reversed if a severely discharged battery is recharged immediately.
- If the battery is not recharged, the plates will continue to harden, and the ability to accept a charge will diminish. This results in reduction of battery performance.

- Check no load voltage.
- Charge the battery.

Charge battery with the battery charger VAS 5095 A.
Charge battery with the battery charger VAS 5900.
Charge battery with the battery charger VAS 5903.