With 900 W/1000 VA, this Smart-UPS On-Line lithium-ion battery backup system provides a compact, double conversion on-line power supply with pure sine wave output. In addition to clean and quiet power protection, this UPS is only about half the size and weight of comparable UPS systems with similar runtimes and offers flexible rack and tower installation options. A new battery module with extended runtime ensures longer operation in a small 2U space and triples the lifespan of the UPS. SRTL 1-3 kVA UPS systems with this battery module for long runtimes are perfect for applications where runtime is critical. Not suitable for consumers in the EU.