The battery cabinet is a standalone independent cabinet that provides backup power at 48 volt DC nominal to a pair of triplet racks in the event of an AC outage in the data center. The batteries are a sealed 12.5 volt DC nominal, high-rate discharge type with a 10 year lifespan, commonly used in UPS systems, connected in a series of four elements for each group (called a string), for a nominal string voltage of 48VDC. There are five strings in parallel in the cabinet. The OCP Asia-Pacific chapter translated the battery cabinet specification into Japanese.
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