UPS बैटरी साइज़िंग कैलकुलेटर — सूत्र

UPS Battery Sizing

Proper battery sizing ensures the UPS provides the required runtime at the expected load.

Formula

Capacity (Ah) = (Load / Efficiency) x Runtime (hours) / Battery Voltage / DOD

Where DOD is the maximum depth of discharge (80% for lead-acid to extend life, 90% for lithium).

Sizing Considerations

Battery capacity degrades over time (plan for end-of-life capacity)

Temperature affects capacity (reduce by 1% per degree C below 25 C)

Higher discharge rates reduce effective capacity (Peukert effect for lead-acid)