Sizing a 3-Phase Online UPS and 48V LiFePO4 Backup for Critical Sites
Nidus Trading · 8/8/2026
Load profiling, runtime, and battery chemistry — how to specify resilient power for data centers and telecom sites.
Downtime at a data center or telecom site is expensive. Correct UPS and battery sizing is the foundation of resilient power.
## Confirm before you buy
1. Critical load (kW/kVA) and power factor
2. Required autonomy (runtime) at full load
3. Topology — online double-conversion (VFI) for sensitive loads
4. Battery chemistry — LiFePO4 vs VRLA (cycle life, footprint)
5. Surge protection coordination (Type 1+2 SPDs)
Nidus Trading supplies APC, Vertiv, and Eaton 3-phase UPS, Pylontech 48V LiFePO4 ESS, and DEHN/Phoenix Contact SPDs. Browse [Power Quality & Backup Infrastructure](/products?category=power-quality-backup) or [request a quote](/inquiry).