About this item Ultra-Efficient Power for Longer Runtime: Uses only 9W on standby, powering a dual-door fridge for up to 32 hours. Up to 4kWh Expandable Capacity: Add an expansion battery to reach 4kWh and run a dual-door fridge for up to 64 hours. Six Ways to Recharge, 100% in 58 Min: Experience lightning-fast recharging with AC and solar—fully charged in 58 minutes. Massive 4,000W Peak Power: With 2,400W rated and 4,000W peak output, easily run multiple appliances at once—including most window and RV A/Cs. Recharge On the Go with 800W UltraFast Alternator Charging: Charge to 100% in 3 hours with your car, that's 8× faster than a standard car socket. Super Light and Compact: At only 41.7 lb and 18.1 × 9.8 × 10.1", C2000 Gen 2 is 25% lighter and 29% smaller than similar products.