Skip to Content
Track OrderReturnsStoresHelp
Argos logo
Use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Shop
AccountWishlistTrolley
HSTS Pixel
Ecoflow Stream Ultra X 3.84kWh Solar Battery - 800W
1/5
new_badge

Ecoflow Stream Ultra X 3.84kWh Solar Battery - 800W

963/8370

  • £1299.00

Loading...
Loading...
18+, T&Cs apply, Credit subject to status.
Get paid for your old device

Check stock

Check stock to see your delivery and collection options:

Sign in or register to save items to your account. Simply tap the heart again to remove.

*Argos Pay Representative ExampleRepresentative 34.9% APR (variable), 34.95% PA purchase rate (variable), £1,200 assumed credit limit.Offers and credit subject to status. 18+. UK only. Terms apply. NewDay Ltd is the lender, Argos Limited is the broker.

About this product

This product must be hard wired and fitted by a qualified registered electrician. A plug is not included. The EcoFlow STREAM Ultra X is a premium battery system packing a 3.84 kWh LFP battery. It features an integrated hybrid inverter supporting 800W grid-tied export and up to 2,300W maximum device output via an internal bypass loop to easily power demanding household appliances. Equipped with a 4 channel MPPT setup, it accepts a massive 2,000W of direct solar panel input. It boasts a robust IP65 weatherproof build, auto-heating loops for freezing winter conditions, 30 DB operation, and smart app integration via Wi-Fi, Bluetooth, Matter, and Shelly protocols.

Expanded Capacity: Built with a baseline 3.84 kWh Lithium Iron Phosphate (LFP) battery storage capacity (expandable all the way up to 23 kWh for extended overnight usage).

Power Output: Equipped with an integrated grid-tied microinverter delivering a localised 800W AC on-grid export, capable of handling up to 2,300W max device output via bypass mode to run heavy household appliances.

High Solar Intake: Employs a 4 channel MPPT tracking configuration supporting up to 2,000W of total direct solar panel input (500W per channel max). Includes 2M AC cable(no plug included), and MC4 PV extension cables for panels.

General information:

  • Size H460, W42, D294mm.
  • Weighs 38800g.
  • Model number: EFSTREAMULTRAX800W.
  • Manufacturer's 10 year guarantee.
  • EAN: 4895251652933.

The small print

*Prices correct as displayed but are subject to change.


The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.