Ecoflow DELTA 3 Max Plus Extra Battery

Name: Ecoflow DELTA 3 Max Plus Extra Battery
Rating: 3.00 (2 reviews)

BY: EcoFlow

SKU: EFD3MP-EB

| Availability: In stock

$1,399.00

$859.00

You Save: $540.00

Product Highlights

Built for home backup, off-grid power, and RV travel
2,048 Wh capacity for extended backup and off-grid runtime
Expandable design lets stored power grow with future needs
Integrated battery management helps protect daily operation

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EcoFlow DELTA 3 Max Plus Extra Battery

The EcoFlow DELTA 3 Max Plus Extra Battery is a high-capacity expansion module designed to double your power storage when paired with the DELTA 3 Max Plus series power stations. With a 2048Wh LiFePO₄ battery, it offers dependable, long-lasting energy for home backup, RVs, and off-grid use.

This smart extra battery connects seamlessly to the main DELTA 3 Max Plus unit, using intelligent communication for efficient charging and discharging. Built with multiple layers of protection and durable construction, it’s engineered for performance, safety, and long life in any environment.

EcoFlow DELTA 3 Max Plus Extra Battery Features

Extended Capacity for Longer Runtime - Expand your DELTA 3 Max Plus power station by an additional 2048Wh, doubling total energy storage.

Reliable LiFePO₄ Battery Chemistry - High-quality LFP cells provide over 3,000 charge cycles with excellent thermal stability and safety.

Smart Battery Management System -Equipped with over-voltage, overload, over-temperature, and short-circuit protection to ensure reliable operation.

Seamless Integration - Easily connects to the DELTA 3 Max Plus or other compatible EcoFlow power stations using the included smart extra battery cable.

Durable and Efficient Design -Optimized for consistent output in a variety of environments, with an intelligent cooling system and robust casing for long-term use.

EcoFlow DELTA 3 Max Plus Extra Battery Applications

Home Backup Expansion – Extend your system’s runtime during power outages.
RV and Camping Power – Enjoy longer off-grid adventures without recharging as often.
Emergency Preparedness – Keep critical devices running longer during extended outages.
Outdoor Worksites – Power tools and equipment for longer shifts.

What's Included

Everything you need is included with your product.

1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery
1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery Cable

1 x Manual
1 x Warranty Card

Warranty

5-Year Limited Warranty

EcoFlow DELTA 3 Max Plus Extra Battery Specifications

General

Category	Specifications
Model	EFD3MP-EB
Net. Weight	Approx. 16 kg (35.3 lb)
Dimensions (W×D×H)	Approx. 494 × 239 × 196 mm (19.4 × 9.4× 7.7in.)

Output

Category	Specifications
Extra Battery Port	43.2V-57.6V⎓100A Max

Input

Category	Specifications
Extra Battery Port	43.2V-57.6V⎓48A Max

Battery Info

Category	Specifications
Rated Capacity	2048Wh (51.2V⎓40Ah)
Cell Chemistry	LFP (LiFePO₄)
Protection Type	Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection

Environment Temperature

Category	Specifications
Optimal Operating Temperature	20°C-30°C (68°F-86°F)
Charge Temperature	0°C-45°C (32°F-113°F)
Discharge Temperature	−10°C to 45°C (14°F-113°F)
Storage Temperature	−10°C to 45°C (14°F-113°F)

Product Compatibility

EcoFlow Power Station

EcoFlow DELTA 3

EcoFlow DELTA 3 Plus

EcoFlow DELTA 3 Ultra Plus

EcoFlow DELTA 3 Max Plus

Note:

Compatible exclusively with the EcoFlow DELTA 3 series (DELTA 3, DELTA 3 Plus, DELTA 3 Ultra Plus, and DELTA 3 Max Plus).
Do not stack this battery with other series of power stations.
If stacking is necessary, ensure both units are positioned with their long sides against a wall to prevent accidental falling.

Frequently-Asked Questions

Can I use the extra battery independently?

No, the DELTA 3 Max Plus Extra Battery is designed to work only when connected to a compatible EcoFlow DELTA 3 power station.

Does it recharge automatically when connected?

Yes. The battery automatically charges and discharges with the main power station for seamless energy management.

Can multiple extra batteries be connected?

Yes. You can connect multiple extra batteries in series to further expand capacity.

Is the battery safe to store indoors?

Yes. The LiFePO₄ battery is safe for indoor use and features built-in protection against overheating and overcharging.

Manual

EcoFlow DELTA 3 Max Plus Extra Battery Manual

Shipping & Easy Returns

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Most orders leave the warehouse in 1 to 2 business days and arrive within 3 to 10 business days. We send tracking the moment it ships.

Anything that ships on a pallet goes freight with liftgate and pallet jack included, so the driver gets it off the truck and onto the ground at your address. The carrier will call you directly to schedule a delivery window.

Returns are 30 days from delivery. For freight deliveries, inspect the shipment before you sign for it. If something is damaged in transit, note it on the delivery receipt and we handle the freight claim, not you. Read more about our Returns Policy here.

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