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TRU Off Grid
EcoFlow DELTA Pro 3 Extra Battery, 4 kWh1 / 4

EcoFlow

EcoFlow DELTA Pro 3 Extra Battery, 4 kWh

$2,779$3,299Save 16%

Canadian dollars, plus 13% HST.

Only 2 left in Milton
1
4.874 Google reviews

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Details

TRU Off Grid 4kW Delta Pro Extra Battery – Expand Your Delta Pro 3

At TRU Off Grid in Milton, Ontario we regularly stock the 4kW Delta Pro Extra Battery which enables you to expand your Delta Pro 3 to 8kW with one expansion battery and 12kW with two expansion batteries.

Expand for Additional Energy Requirements: The rated capacity of one battery is 4kWh. The capacity can be expanded up to 36 kWh by connecting additional DELTA Pro 3 units or extra batteries in parallel. It also accommodates charging via a gas generator for both the main product and extra batteries, allowing for an expansion up to a maximum capacity of 48kWh.

Long Life Cycle: DELTA Pro 3 supports LFP battery which provides 4000 cycles till it lowers to 80% capacity. That’s almost 11 years of regular use. Every battery houses an integrated BMS module to regulate its voltage, current, and temperature, keeping it safe, secure, and long-lasting.

Power Almost Everything: The EcoFlow DELTA Pro 3 supports 120V/240V voltage and has a 4000W output (6000W with X-Boost, scalable up to 12000W), powering nearly all essential home appliances, such as a 3-ton* central AC or a 1 HP water pump.

Massive Power: Featuring a 4000Wh LFP battery capacity, expandable to 48kWh with extra batteries or smart generators, providing 2-4 days of whole-home backup power. With 7 unique and 18 combo charging methods like AC wall outlets, solar panels, gas generators, EV charging piles, or the EcoFlow smart home panel 2, you can forget fuel worries.

Explore the Secure Feeling: The EcoFlow DELTA Pro 3 features automotive-grade LFP cells and IP65-rated CTC battery pack technology, safeguarding battery health and extending lifespan. Enjoy peace of mind with a 5-year warranty and exceptional customer service, available anytime for any issues.

Contact Information

Please call Jacob Collier at 647-914-9699.

Reviews

Why people buy from TRU

Shop customer
“Fabulous personalized customer service! They didn't just sell me a product. They gave me design suggestions for my project and helped me pick the right product to work best for it. This is the kind of "go the extra mile" customer service that is disappearing in an Amazon world.”
Ryk B.Google review · 2026
Shop customer
“They take the time to find out what your needs and expectations are and will far exceed them. They don’t have used car salesmen vibes!”
George V.Google review · 2025
Shop customer
“Calling TRU Off Grid and speaking to Jack (May 12 am) was one of the most rewarding experiences in customer service I have ever had! … The order was shipped about 2pm Monday May 12 and we received it ( we live in the "sticks" in Lanark Highlands Ontario) about 2pm Tuesday May 13!!!!”
James C.Google review · 2025

Real reviews from our Google listing, quoted word for word. Read all 74

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