EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh)
EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 1EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 2EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 3EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 4EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 5EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 6EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 7EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 8EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 9EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 10EcoFlow EB300 Smart Extra Battery For RIVER 3 Plus (286Wh) additional 11
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£189.68 ex VAT£227.62 inc VATWas: £238.99 ex VAT

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Description

Expand your portable power potential with EcoFlow's EB300 Smart Extra Battery, the perfect companion for the EcoFlow RIVER 3 Plus Portable Power Station that seamlessly increases energy storage from 286Wh to 572Wh. This intelligent extra battery delivers reliable, flexible power whenever and wherever you need it. Whether you're heading off-grid, preparing for emergencies, or extending your runtime on outdoor adventures, the EB300 gives you the confidence of longer-lasting portable energy.

Engineered for convenience, the EB300 features an innovative wireless Pogo Pin connection, allowing you to attach it to your RIVER 3 Plus Portable Power Station instantly - with no cables, screws, or complicated setup required. Simply stack and connect for an immediate power boost. Its secure, cable-free design keeps your setup neat, portable, and hassle-free.

Designed with an integrated 140W USB-C input and output port, you'll also be able to use the EB300 Extra Battery independently to power smaller devices during short trips, reducing the need to carry your full power station setup. For users requiring even more energy storage, the EcoFlow RIVER 3 Plus system supports expansion up to a substantial 858Wh total capacity when paired with two compatible extra batteries. This scalable design ensures your power setup can grow alongside your energy needs.

Built with advanced LiFePO4 (LFP) battery technology, the EcoFlow EB300 offers exceptional durability and long-term performance. Designed to last over 3,000 charge cycles and provide up to 10 years of daily use, it’s a dependable energy solution for home backup, campervans, caravans, camping trips, and outdoor working environments.

  • Expands EcoFlow RIVER 3 Plus capacity from 286Wh to 572Wh
  • This expandable system supports up to 858Wh total capacity
  • Innovative wireless Pogo Pin connection - no cables or screws needed
  • Durable LiFePO4 (LFP) battery technology
  • Up to 3,000 charge cycles
  • Designed for up to 10 years of daily use
  • Additional 140W USB-C input & output port
  • Can be used on its own for lightweight portable charging
  • Compact & lightweight design at only 3.5kg
  • Ideal for camping, off-grid adventures, campervans, travel & emergency backup
  • Quick, secure stackable installation
  • Backed by a 5-year manufacturer warranty

Technical Specifications:

  • Capacity: 286Wh
  • Dimensions: 234mm x 224mm x 110mm | Net Weight: 3.5kg
  • Battery Chemistry: LiFePO4, 3000 cycles to 80% capacity
  • USB-C Output: 1x port, 5V/9V/12V/15V⎓3A max, 20V/28V⎓5A max, 140W max
  • USB-C Input: 5V/9V/12V/15V⎓3A max, 20V/28V⎓5A max, 140W max

Please note, the EcoFlow RIVER 3 Plus Portable Power Station is NOT included. 

Code: EFEB300

DELIVERY INFORMATION

Fast, reliable UK delivery

  • FREE UK delivery (2–3 working days) on orders over £99 exVAT (order before 4pm)*.
  • Orders under £99 exVAT are charged £6 inc VAT (£5 exVAT).
  • Need it quickly? Choose from our Next Working Day & Saturday delivery options below (order before 2pm).

Delivery options & rates

Delivery OptionDelivery TimeCost
Standard Delivery2-3 working days£6.00 (£5.00 exVAT)
FREE Standard Delivery (orders over £99 exVAT)*2-3 working daysFREE
Next Working Day Delivery (order before 2pm)Next working day£9.99 (£8.33 exVAT)*
Next Working Day by 12pm  (order before 2pm)Next working day£20.00 (£16.67 exVAT)
Next Working Day by 10:30am  (order before 2pm)Next working day£21.60 (£18.00 exVAT)
Saturday Delivery  (order before 2pm Friday)    Next working day£20.00 (£16.67 exVAT)
Northern Ireland, Highland  & Islands Delivery  3-5 working days£9.99 (£8.33 exVAT)

Important: Orders placed after 2pm on Friday (or over the weekend) are processed on Monday for next working day delivery. Next Day & Saturday Delivery options NOT available on all products.

*FREE Standard & Next day delivery available on select products and will be clearly shown on the product page.


What to expect

  • We dispatch Monday - Friday (excluding public holidays).
  • Once dispatched, you’ll receive tracking information (where available).
  • If delivery is delayed for any reason, we’ll contact you as soon as possible with an updated estimate.

Please note: we cannot be held responsible for missed deliveries. Customers are advised to check their spam or junk folder to ensure tracking information and estimated delivery details are received.


Specialist product delivery

Some products require specialist handling:

  • For Portable power please allow up to 4 working days for delivery.
  • Solar panels, battery storage, inverters, heat pumps and boilers are shipped via our pallet delivery service which costs up to £100.
  • In some cases a third-party supplier may fulfil your order directly.

Delivery areas & restrictions

  • Northern Ireland, Scottish Highlands & Channel Islands: please contact us for shipping rates.
  • Portable power to Northern Ireland: we can’t currently ship these items due to insurance issues with the courier.
  • International delivery: unfortunately we do not currently offer international shipping.

Questions, problems, or returns?

RETURN POLICY

Last updated May 23, 2024

Thank you for your purchase, we hope you are happy with it.

However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund, store credit, or an exchange; please see below for more information on our returns policy.

RETURNS

If you find you have received the wrong or damaged item(s), you need to contact us within 7 days of receipt of goods. Any time after this you are responsible for returning the goods at your own cost following the standard returns process.

All returns must be postmarked and in writing within fourteen (14) days of the purchase date. All returned items must be in a new, unopened and unused condition, with all original tags and labels attached.


RETURN PROCESS

To return an item, please click the ‘Download Returns Form’ below and complete all data fields. You can then email this to our team once completed.
Place your item(s) securely in its original packaging along with the returns form.
Please note that the RMA# on the returns address is your original order number; please ensure to reference this on the returns address, as per below.
You are now ready to mail your return to the following address:

Attn: Returns
RMA #/Order No -
Eco WizardUnderfloor Wizard Ltd t/a ECO Wizard
Beechfield House
Winterton Way
Macclesfield
Cheshire
SK11 0LP
United Kingdom

We ask that all customers when returning products send the goods via a trackable courier service. Underfloor Wizard Ltd t/a ECO Wizard will not be held responsible for goods which do not arrive at our premises.

Please note, you will be responsible for all return shipping charges, unless in the instance of damaged/faulty goods received in which case we can issue you with a returns label to cover the cost of postage.

Download Returns Form

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return or exchange. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your return has been processed.

Faults on installed products: 

If a product that has been installed develops a fault, please contact us, do not uninstall the product yourself. We will arrange for an engineer or technical support from the brand to assist with diagnosing the fault. Once the fault has been confirmed we can then arrange for the necessary next steps to occur.


EXCEPTIONS

The following items cannot be returned or exchanged:

  • opened box, damaged, missing or incomplete items cannot be returned.
  • items that have been installed.


QUESTIONS
If you have any questions concerning our return policy, please contact us at: returns@ecowizard.co.uk

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