EcoFlow Extra Battery Expansion Adapter label_new *Note: This oversized item ships

*Note: This oversized item ships by truck

35W RAPID Fast Charging: Delivers high-speed charging—powering iPhone 17 to 50% in just 30 minutes

7 hours AC charging

Double the Output: Chain 2 × DELTA Pro Ultra Inverter together for a continuous output of 12kW and peak output of 18kW to run even the most heavy-duty appliances

EcoFlow Extra Battery Expansion Adapter label_new *Note: This oversized item shipsExtra Battery Expansion Adapter will ship on 15 August 2026. The EcoFlow Extra Battery Expansion Adapter connects two Smart Extra Batteries with a single cable, expanding the capacity of DELTA 3 Max Plus and DELTA 3 Ultra Plus. DELTA 3 Max Plus works with: DELTA 3 Max Plus Smart Extra Battery, DELTA Pro 3 Smart Extra Battery, DELTA 3 Smart Extra Battery, EcoFlow 800W Alternator Charger, EcoFlow Alternator Charger 600, EcoFlow Alternator Charger Plus