The battery characteristics of 20 PV systems were compared. Four different types of systems were identified on the basis of battery loads and another four types on the basis of battery temperatures. A database was set up for these standard evaluations. Systems can be compared on the basis of accurately defined standard evaluations. The findings were used for deriving recommendations for data acquisition systems and averaging methods which can be applied in the construction of new systems. (orig./AKF)Im Rahmen dieses Projekts wurde das Batterieverhalten von 20 PV-Anlagen vergleichend untersucht. Es zeigt sich, dass sich die Anlagen in vier Klassen bezueglich der Batteriebelastungen einteilen lassen. Ebenso wurden vier Klassen fuer die Batter...