Battery storage

Batteries that have not been used for a long time (for example, on a non-operating car), undergo self-discharge and, in addition, sulfation. When charging them from a quick charger, they do not receive a charge current and, due to the so-called surface charging, behave as if "fully" charged. They may be faulty.

Before considering these batteries as defective, they should be checked:

• Check electrolyte density. If the density in individual jars differs by no more than 0.04 g/ml, the battery can still be charged with a normal charger.
• After charging, test the battery under load. If the required values are not maintained, the battery is defective.
• Check electrolyte density. If the density in one or two neighboring banks is noticeably lower (for example, in 5 jars the density is 1.16 g/ml, and in one jar 1.08 g/ml), the battery has a short circuit and is defective.
• To prevent battery aging, charge a stored battery approximately every 2 months.