Technical issues of sizing Lead-Acid batteries for application in residential renewable energy systems

Lead acid batteries are one of the most commonly used storage devices in residential renewable energy systems. This paper explains the procedure of calculating required capacity of lead acid battery for a residential based renewable energy system. A renewable energy system (RES) is introduced based on a topology of multi-port converter. The basic required stored energy is defined using averaged load energy demand and renewable energy generation profiles. The required capacity of lead-acid battery is calculated on the basis of required stored energy considering technical factors such as battery efficiency, operation temperature and number of autonomy days. The technical issues of using Lead Acid batteries are discussed and presented based on the factory provided manuals.