RIVER 3 Max

EcoFlow RIVER 3 Max – 572Wh Portable Power Station

572Wh portable power for home essentials, camping and campervan backup.

  • Keeps Wi-Fi and phones online
  • Easy to move around the home
  • 600W output for essentials
  • LFP battery for regular backup use
  • A practical step below DELTA

Compact EcoFlow backup for Wi-Fi, lighting, laptops and short UK power cuts.

£399.00

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Quick fit check

Is the RIVER 3 Max right for you?

Good fit if you want to:

  • Keep Wi-Fi, phones, lighting and laptops available during shorter UK power cuts
  • Choose a compact 572Wh backup unit that is easy to move around the home
  • Power suitable everyday devices within the 600W AC output rating
  • Use one portable setup for home backup, camping and campervan trips
  • Recharge between uses from mains and compatible charging options

Consider another setup if:

  • You need whole-home backup or fixed installation
  • You want to run kettles, heaters, ovens or heavy tools
  • You need several high-draw appliances running at the same time
  • You need multi-day backup without recharging
  • You want a larger expandable DELTA system
Practical backup planning

What can it power?

Check your appliances with the Power Calculator

Fridge freezer

Keep chilled food protected during interruptions

Estimated 2 hours

Wi-Fi router

Keep broadband equipment running where service remains available

Estimated 20–29 hours

LED lighting

Run key low-wattage lighting for extended periods

Estimated 29 hours

Laptop

Power work, study and admin away from mains

Estimated 8 charges

Phones

Keep family phones charged and reachable

Estimated 52 charges

TV

Run a suitable TV during longer outages

Estimated 5 hours

Runtime is estimated and depends on appliance wattage, battery level, operating mode and real-world conditions.

At a glance

RIVER 3 Max at a Glance

Capacity572Wh
AC Output600W
Battery TypeLFP
Weight8.3kg
A closer look

A Closer Look at the RIVER 3 Max

The RIVER 3 Max sits in a useful middle ground. It is more capable than a small USB power bank, but still compact enough to move between the house, car, campervan or garage without feeling like a full home-backup system.

For UK households, it makes most sense as a short-outage essential-power unit: Wi-Fi router, lighting, phone charging, laptop top-ups and selected low-demand devices. For heavier loads such as kettles, heaters, ovens or workshop tools, step up to a larger EcoFlow DELTA system instead.

Its 572Wh capacity, 600W AC output and LFP battery chemistry make it a practical choice for storm planning, travel weekends and everyday backup without fuel, fumes or permanent installation.

EcoFlow RIVER 3 Max portable power station display view
Key benefits

Why it works for your setup

Keeps Wi-Fi and phones online

Keep routers, phones and key small devices available during shorter power cuts where broadband service remains active.

Easy to move around the home

Compact enough to move between rooms, store in a cupboard or take out to the car, van or campsite.

600W output for essentials

Built for suitable low-demand devices such as routers, lighting, phones, laptops and small electronics.

LFP battery for regular backup use

Long-life battery chemistry for seasonal storm planning, camping trips and occasional outages.

A practical step below DELTA

More capable than a small power bank without moving into a larger EcoFlow DELTA setup.

VoltReady confidence

Why Buy From VoltReady™

UK-Based Business

VoltReady is a UK-based portable-power specialist serving customers across the United Kingdom.

Manufacturer Warranty

Products include manufacturer-backed warranty cover, with the exact terms shown clearly on each product page.

Flexible Ways to Pay

Pay securely by card, Apple Pay, Google Pay, Klarna or Clearpay. Available options depend on your order and eligibility.

UK Customer Support

Get straightforward help before and after your purchase through live chat or email.

Product details

Everything important, clearly organised

Key Features
572Wh expandable RIVER 3 Plus Series capacity for longer compact backup
600W AC output with 1,200W surge and X-Boost support
Under 10ms UPS switching for suitable devices
100W USB-C output plus USB-A, AC and 12V car outputs
360W AC input with 0-100% recharge in about 60 minutes
220W max solar input for compatible panels
LiFePO4 battery chemistry with 3,000-cycle rating to 80% capacity
Technical Specifications
Capacity572Wh
Battery ChemistryLiFePO4
Cycle Life3,000 cycles to 80% capacity
AC Output600W total
Surge Output1,200W
X-Boost Output1,200W
UPS Transfer TimeUnder 10ms
Noise LevelBelow 30 dB under stated conditions
USB-C Output1 x 100W max
USB-A Output2 x 12W max per port, 24W total
12V Car Output12.6V/10A, 126W max
AC Input360W max, 0-100% in about 60 minutes
Solar Input220W max, 11-55V, 13A
Car Input220W max, 11-55V, 8A
Extra Battery CapacityEB300, 286Wh
Weather ResistanceIP54 battery protection applies to the battery pack, not immersion protection for the whole unit.
Warranty5-Year Warranty
What’s in the Box
EcoFlow RIVER 3 Plus Portable Power Station
EcoFlow EB300 Extra Battery
Cable and accessory contents vary by package; confirm the current UK package contents before ordering.
FAQs

Is the RIVER 3 Max suitable for UK power cuts?

Yes, for selected essentials within its 600W AC output rating. The 572Wh capacity gives more runtime than the standard RIVER 3 Plus.

What can the RIVER 3 Max realistically power?

It is best for Wi-Fi equipment, phones, lighting, laptops and suitable low-wattage appliances. Check wattage and surge demand before connecting devices.

Can it run kettles, heaters or ovens?

Only if the appliance is within rating, but high-heat appliances drain batteries quickly and are usually a poor use case.

Can it recharge from solar?

Yes. EcoFlow lists up to 220W solar input for the RIVER 3 Plus Series with an 11-55V, 13A input range.

Is this a whole-home backup system?

No. It is a portable power station for selected essentials, not a professionally installed whole-home battery system.

Shipping, Returns & Warranty
Free UK delivery available on qualifying orders.
30-day returns policy for eligible unused items.
5-year EcoFlow manufacturer warranty included, subject to EcoFlow's warranty terms.
Delivery times may vary by product, warehouse and courier availability.