Expandable up to 858Wh with a wire-free connection. 600W rated output and 1200W X-Boost. 1-hr fast charging, no battery damage. Up to 220W fast solar charging. Up to 2× runtime for light-wattage appliances. Compact and lightweight. <10 ms pro-grade UPS for precision devices. <30 dB whisper quiet for 24/7 use.