EcoFlow Refurbished STREAM Ultra X Balcony Power Plant 3840Wh LFP Solar Battery

EcoFlow STREAM Ultra X Balcony Power Plant (Refurbished — Excellent) — 3840Wh

Double the storage. Renter-friendly. Now refurbished, fully tested.

The EcoFlow STREAM Ultra X is a plug-in, all-in-one battery and inverter built for balcony and terrace solar systems — combining serious storage capacity with effortless setup. This unit has been professionally inspected and refurbished to Excellent condition, giving you full performance at a smarter price. Connect your panels, plug it in, and the system automatically manages your power between use, storage, and feed-in.

Why you'll love it

• Massive storage: 3.84kWh LFP battery — double the capacity of standard STREAM models — expandable up to 23kWh for larger households or extended low-sun periods
• Maximise every ray of sun: Four independent 500W MPPT inputs (2000W total) capture solar energy efficiently, even in partial shade or cloudy conditions
• Powerful output: Delivers 2300W of continuous power — enough to run washing machines, fridges, or power tools directly
• Smart, AI-driven savings: The EcoFlow app analyses electricity tariffs, weather forecasts, and your usage patterns to boost annual savings by up to 29%
• No installation needed: Fully plug-and-play — works with your existing balcony solar setup with no structural changes
• Built to last: Rated for 6,000 cycles to 70% capacity
• Weatherproof: IP65-rated, designed for reliable outdoor use
• Expandable ecosystem: Pair with the EcoFlow STREAM AC Pro for even higher output and capacity

Specs at a glance

Perfect for

Renters and homeowners with balcony or terrace solar setups who want serious storage capacity to run higher-consumption appliances and maximise self-sufficiency — at a lower price point than new.