ABSTRACT
In the frame of the Qualibat project, damaging mechanisms of batteries belonging to photovoltaic systems have been studied. Irreversible sulphation is the most observed degradation type, some batteries showed shedding and the presence of a corrosion layer. Then, three test procedures corresponding to each type of degradation have been developed and validated. The efficiency criteria has been studied, it seems to be an interesting criteria, beyond the lifetime criteria, to choose a battery.
