Battery testing is done to maintain the continued performance of a UPS system. Impedance testing and discharge testing, also known as load bank testing are the typical battery tests practised. Load bank testing audits the batteries under varying conditions to check their performance and their ability to hold charge. This test helps to ascertain the battery life.
Substation protective relays and controls rely on storage batteries for their operation. Hence it is critical for testing to be done to validate the performance and life of these batteries. Self-regulated battery charges are used to maintain a precise DC bus voltage to keep the storage batteries fully charged.