The APC Smart-UPS SRT 10000VA/10kW is a double-conversion online UPS available in tower or rack orientation, supplied here with its 4U rack-mount kit included. It comes with a network management card for remote monitoring, and uses lithium-ion batteries rather than traditional VRLA lead-acid — giving a longer service life and smaller footprint — backed by a 5-year warranty. Online double-conversion topology gives continuous, regulated output with no switchover gap. This is a serious mid-range UPS for protecting a server rack, networking closet or small data centre, and the lithium battery choice suits buyers wanting lower long-term maintenance/replacement costs over the unit's life.