Battery - Preventing Battery Discharging

86porsche03

Subject:

Battery Discharging
Model

All Types
Group

2
Part Identifier

2706
Number

8601
June 25, 1986
When not in use, a filled and charged battery loses up to 1% of its capacity daily. (Selfdischarging) Discharging will be accelerated by the following factors:

- Contamination of battery acid.
- Ambient temperature above 20 degrees C (68 degrees F), the higher the temp., the faster the discharging.
- Excessively dirty battery housing, possible leakage.
- Battery age.

In addition, there are the permanent consumption instruments and accessories such as the clock, lights, alarm.

In extreme cases the battery capacity could drop to its critical limit of approx. 33% in 2 to 3 weeks for a 928S.

Recommendation: If a vehicle will be stored, or not operated for an extended period, the battery should be disconnected or removed and stored in a cool, dry room.