Ecoflow Delta 3 has 1-5kWh expandable with DELTA 3 Extra Battery, DELTA Pro 3 Extra Battery, DELTA 2 Extra Battery or DELTA 2 Max Extra Battery. 1800W AC output, 2200W (surge 3600W) with X-Boost 5 fast recharging methods (AC, Solar, 800W Alternator Charger, Smart Generator 3000 (Dual Fuel), Multicharging) 5-year warranty DELTA 3 Series Industry-leading portable power station with the fastest charging speed 5 ways of industry-leading fast charging. Perfect for indoors, outdoors, or on the go. Powerful output, imperceptible operation. 1800W output, 3600W surge beyond limits EcoFlow DELTA 3 Series supports 99% of household devices, including refrigerators, TVs, and computers. Plus, with X-Boost, continuously power appliances over 2200W, such as ovens (2150W), hair dryers (1800-2500W), and kettles (1200-3000W). Perfect for home backup, RV, and outdoor usage, this powerhouse ensures you're never left in the dark. 30 dB Ultra-quiet Operation. Completely imperceptible under 600W, blending with natural ambient noise (30 dB). Inside a tent or indoors, it won't disrupt sleep. Peace of mind for backup power, convenient for daily use. An intelligent energy management system powered by EcoFlow Oasis. Flexible expansion for ultra long runtime. Conveniently expandable up to 5kWh*. *EcoFlow DELTA 3 Series are compatible with Extra Battery of DELTA 3, DELTA Pro 3, DELTA 2 Max, DELTA 2. Still have questions? Give us a call at 877-242-2792