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EcoFlow Delta 3 Max Plus Extra Battery

Stock due 7 to 10 days
Stock due 7 to 10 days

All the information below is valid for purchases made on or after 01/07/2025. For purchases made before this date, the warranty details will be provided on your sales receipt or can be obtained by getting in touch with our Customer Service

Our warranty table indicates the standard warranty period supplied by each manufacturer along with where to claim your warranty, if needed.

Please note: We may run promotions and offer longer warranties than advertised below. These will be detailed on the individual product pages and will also be visible on your order invoice.

Should you wish to contact the manufacturer direct for any reason, we have also provided this information within the associated brand sections.

Warranties can only be fulfilled to goods purchased and delivered within the UK. In order for us to conduct a Warranty claim for goods taken outside of the UK, the goods will have to be returned at your own expense. Alternatively, you can make the goods available for collection at a UK address. This also applies to goods delivered to shipping companies. Subsequent to a successful warranty claim, goods can only be re-delivered to a UK address.

Free warranties provided for TVs & Appliances, are provided by the Manufacturer/Supplier, and are bound by their own individual terms and conditions. If you need further clarification, please contact us.

If you have a fault with a product, please see our Service and Returns Policy

Standard Items (DPD)

Usually bookshelf speakers*

Standard Deliveries
Order by 3pm Mon-Fri 		Free 2 Weekday Delivery
Express Deliveries
Order by 3pm Mon-Fri 		Next Weekday or Choose-a-Day Standard - £10 for the first box + £3 per additional box

Next Weekday or Choose-a-Day Pre-12pm Noon - £15 for the first box + £3 per additional box
Weekend Deliveries
Order by 3pm Friday 		Saturday or Sunday - £15 for the first box + £3 per additional box
Remote & Off-Shore Region Deliveries
Order by 3pm Mon-Fri 		2 Weekday Remote Service - £20 for first 2 items + £9 per additional box

2 to 5 Weekday Off-Shore Service - £30 for first 2 items + £9 per additional box

Medium Sized Items (FEDEX)

Usually TVs under 60" or £1000, and most floorstanding speakers*

Standard Deliveries
Order by 3pm Mon-Fri 		Free 2 Weekday Delivery
Express Deliveries
Order by 3pm Mon-Fri 		DPD Freight - Next Weekday or Choose-a-Day Delivery - £20 per box

FedEx - Next Weekday or Choose-a-Day Delivery - £20 per box
Weekend Deliveries
Order by 3pm Friday 		DPD Freight - Saturday or Sunday Delivery - £35 per box

FedEx - Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries
Order by 3pm Mon-Fri 		DPD Freight - 2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box

DPD Freight - 2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box

FedEx - Remote deliveries unavailable

Large or Heavy Items (BJS)

Usually TVs over 60" or £1000, and heavy separates over 35kg*

Standard Deliveries
Order by 3pm Mon-Fri 		ArrowXL - Diary Booking Service (2 Weekday Minimum):
White Goods Delivery - £35 per box
White Goods Delivery & Recycling - £55 per box (Dishwashers & Laundry White Goods only)
Television Delivery - Free

BJS - 3 to 5 Weekday:
White Goods Delivery - £35 per box
White Goods Delivery & Recycling - £70 per box (Dishwashers & Laundry White Goods only)
Television Delivery - Free
Express Deliveries
Order by 3pm Mon-Fri 		ArrowXL - Next Weekday:
White Goods Delivery - £45 per box
White Goods Delivery & Recycling - £65 per box (Dishwashers & Laundry White Goods only)
Television Delivery - £10 per box

BJS - Express deliveries unavailable
Weekend Deliveries
Order by 3pm Friday 		ArrowXL - Saturday:
White Goods Delivery - £50 per box
White Goods Delivery & Recycling - £70 per box (Dishwashers & Laundry White Goods only)
Television Delivery - £15 per box

BJS - Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries
Order by 3pm Mon-Fri 		Unfortunately, delivery of these product types is not available to remote locations

Pallet Sized Items (PALLETFORCE)

Usually large/high-end floorstanding speakers or subs*

Standard Deliveries
Order by 3pm Mon-Fri 		2 Weekday Kerbside Delivery - £50 per box
Express Deliveries
Order by 3pm Mon-Fri 		Express deliveries unavailable
Weekend Deliveries
Order by 3pm Friday 		Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries
Order by 3pm Mon-Fri 		Unfortunately, delivery of these product types is not available to remote locations
*Not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.
Standard Items*
DPD		 Medium Sized Items*
DPD Freight or FedEx		 Large or Heavy Items*
ArrowXL or BJS (2-Man Delivery)		 Pallet Sized Items*
Palletforce
Standard Deliveries
Order by 3pm Mon-Fri 		Free 2 Weekday Delivery Free 2 Weekday Delivery ArrowXL - Diary Booking Service (2 Weekday Minimum):
White Goods Delivery - £35 per box
White Goods Delivery & Recycling - £55 per box (Dishwashers & Laundry White Goods only)
Television Delivery - Free

BJS - 3 to 5 Weekday:
White Goods Delivery - £35 per box
White Goods Delivery & Recycling - £70 per box (Dishwashers & Laundry White Goods only)
Television Delivery - Free 		2 Weekday Kerbside Delivery - £50 per box
Express Deliveries
Order by 3pm Mon-Fri 		Next Weekday or Choose-a-Day Standard - £10 for the first box + £3 per additional box

Next Weekday or Choose-a-Day Pre-12pm Noon - £15 for the first box + £3 per additional box 		DPD Freight - Next Weekday or Choose-a-Day Delivery - £20 per box

FedEx - Next Weekday or Choose-a-Day Delivery - £20 per box 		ArrowXL - Next Weekday:
White Goods Delivery - £45 per box
White Goods Delivery & Recycling - £65 per box (Dishwashers & Laundry White Goods only)
Television Delivery - £10 per box

BJS - Express deliveries unavailable 		Express deliveries unavailable
Weekend Deliveries
Order by 3pm Friday 		£15 for the first box + £3 per additional box DPD Freight - Saturday or Sunday Delivery - £35 per box

FedEx - Weekend deliveries unavailable 		ArrowXL - Saturday (via Diary Booking Service):
White Goods Delivery - £50 per box
White Goods Delivery & Recycling - £70 per box (Dishwashers & Laundry White Goods only)
Television Delivery - £15 per box

BJS - Weekend deliveries unavailable 		Weekend deliveries unavailable
Remote & Off-Shore Region Deliveries
Order by 3pm Mon-Fri 		2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box

2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box 		DPD Freight - 2 Weekday Remote Service - £20 for first 2 boxes + £9 per additional box
DPD Freight - 2 to 5 Weekday Off-Shore Service - £30 for first 2 boxes + £9 per additional box

FedEx - Remote deliveries unavailable 		Unfortunately, delivery of these product types is not available to remote locations Unfortunately, delivery of these product types is not available to remote locations
*See below most common product types for each delivery service, this is not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.

DPD: Usually small appliances
FEDEX: Usually hobs, extractor hoods, medium sized appliances and TVs under 60" or £1000
BJS or Arrow: Usually white goods and TVs over 60" or £1000
PALLETFORCE: American fridge freezers & range cookers

Seen a Better Offer

If you've seen a better offer for this product, we will endeavour to match or better it. The competing offer must be on brand-new boxed items, and in stock from another UK Online Authorised Retailer. Price match quotations are valid for 7 days.

The EcoFlow DELTA 3 Max Plus Smart Extra Battery adds 2048Wh of storage to a compatible DELTA 3 Max Plus power station, extending runtime for home backup and off-grid use. Its plug-and-play connectivity and stackable design make expansion simple, while long-lasting LFP battery technology provides reliable energy storage. Multiple batteries can be combined to increase total system capacity up to 10kWh.

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