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EcoFlow DELTA 3 Smart Extra Battery DELTA 3 Smart Extra Battery / No Accessory

EcoFlow DELTA 3 Smart Extra Battery DELTA 3 + DELTA 3 Smart Extra Battery / No Accessory

EcoFlow DELTA 3 Smart Extra Battery DELTA 3 Plus + DELTA 3 Smart Extra Battery / No Accessory

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Load image into Gallery viewer, EcoFlow DELTA 3 Smart Extra Battery DELTA 3 Plus + DELTA 3 Smart Extra Battery / No Accessory

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EcoFlow DELTA 3 Series Smart Extra Battery

Name: EcoFlow DELTA 3 Series Smart Extra Battery
Brand: EcoFlow Europe
SKU: EFDELTA3P-EB
Price: 599.0 EUR
Availability: InStock

€599.00

€599.00 ~~€599.00~~

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- Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh.

- Get 10 years of daily use until it hits 80% of its original capacity. Embrace 4000+ charging cycles enabled by the LFP battery chemistry.

- Plug-and-play system. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery.

- With one of the most comprehensive 5-year warranties available, we go the extra mile to give you peace of mind.

- Dimension: 398 × 200 × 198 mm

- Weight:. 9.6 kg (21.2 lb)

Overview

Options

DELTA 3 Smart Extra Battery

€599.00

DELTA 3 + PowerStream 800 W

€779.00

€100 OFF

DELTA 3 + DELTA 3 Smart Extra Battery

€1,398.00 ~~€1,498~~

€150 OFF

DELTA 3 Plus + DELTA 3 Smart Extra Battery

€1,448.00 ~~€1,598~~

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EcoFlow DELTA 3 Series Smart Extra Battery

€599.00

Quantity must be 1 or more

5 stars: 1 (50%)
4 stars: 0 (0%)
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1 star: 1 (50%)

Exceptional Performance and Seamless Integration!

I am incredibly satisfied with my purchase of the EcoFlow DELTA 3 Series Smart Extra Battery.
The expansion process is completely foolproof. I literally just plugged it into my main unit, and it was instantly recognized—no complicated setup or technical headache required. The seamless integration with the EcoFlow app is fantastic; I can monitor the real-time input, output, and precise battery health of both units from anywhere in the house.
What surprised me the most is the charging speed. Even with the massive added capacity, the system charges incredibly fast without generating excessive heat or loud fan noise. The build quality feels rugged, premium, and durable, which gives me peace of mind for both home backup and outdoor use.
Knowing that it uses long-lasting LFP cells means I will get years of reliable daily use out of it. If you want to double your runtime and eliminate power anxiety, this smart extra battery is worth every single penny. Highly recommended!

EcoFlow DELTA 3 power station extra battery, and 800W Alternator Charger

I purchased an EcoFlow DELTA 3 power station extra battery, and 800W Alternator Charger on November 20, 2025, with the primary goal of upgrading my campervan's power system to reliably run a heater during winter holidays. The 800W Alternator Charger and extra battery arrived promptly, but the essential fuse cable—the short inline-fused cable connecting the input cable to the vehicle's starter battery—was missing from the kit. This has prevented me from safely completing the installation. After multiple emails, I was informed of a "shortage" of fuse cables, with no immediate solution or shipping timeline provided. As of today (6th of January 2026), I have still not received the missing part, any tracking information, or further updates. Unfortunately, this delay forced me to cancel my planned snow holidays in the campervan, as the reliable heater setup was the main reason for this purchase. This has been an extremely disappointing experience and has caused significant inconvenience. I kindly request that you: Prioritize shipping the missing fuse cable immediately.
Confirm an exact delivery date and share tracking details right away.
Consider compensation for the impact, such as a partial refund
ORDER NO. EFEU-36187

EcoFlow DELTA 3 Series Smart Extra Battery

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