The battery cover has a vent through which the battery can "breathe". To prevent the acid from the battery from being drunk, it must not be tilted more than 45°.
To charge the battery, conventional chargers as well as fast chargers can be used. In this case, the battery must be removed for charging.
If an electronic charger is used for charging, the battery can remain installed in the vehicle and not be disconnected from the on-board network. The charger electronics smooth out excessive voltage peaks during charging.
A severely discharged battery should only be charged using an electronic charger. When charging with a conventional device or a booster charger, the initial current is very large, resulting in damage or destruction of the battery.
If the electrolyte level is too low, e.g. after a long stay in a region with a hot climate, top up the level with distilled water, see section "Maintenance work".
If the vehicle is not in use, the battery must be recharged every 8 weeks.
If the vehicle is not driven for more than 6 weeks, the battery is removed and stored in a charged state. The most favorable temperature for storage is from 0 to 27°C. At this temperature, the battery has the most favorable self-discharge rate. Charge the battery again after 3 months at the latest, otherwise it will become unusable.
Clean the battery regularly.
Auxiliary starting devices should only be used in exceptional cases, as this will expose the battery to a very high current for a short time.
Attention: Do not turn on the auxiliary starter without simultaneously turning on the starter.