High-powered Performance:2,000W rated output and 4,000W peak power, capable of running your essential devices - Expandable Capacity: Supports up to 3 add-on battery packs, expanding to 5k - Wh, ensuring 1-3 days of home backup power Industry-leading Sustainability: Setting new standards for sustainability. It is the first in the industry to be verified by TÜV SÜD. Versatile & Fast Charging: 2 Hours Solar Charge with 4*Solar - Saga 200W Solar Panels, 1.7 Hours Wall Charge Long-lasting Reliability: LiFePO4 battery cells, lasting up to 10 years - providing 4,000 charge cycles. Intelligent Control: With the advanced APP feature, via Wi - Fi or Bluetooth.