Overview
The EcoFlow DELTA 3 Ultra Plus is a 3072Wh portable power station built for serious home backup, office backup, RV use, camping, off-grid setups, and demanding portable power applications. With 3600W AC output, 7200W surge capacity, app control, and expandable battery compatibility, it gives you a powerful backup system in a portable format.
It supports multiple charging methods, including AC wall, solar, car, and alternator charging, and Smart Output Priority technology lets you choose which outputs stay powered through the EcoFlow app. Capacity can be expanded with a single compatible EcoFlow DELTA 3 Max Plus Smart Extra Battery (up to 5kWh total) or EcoFlow DELTA Pro 3 Smart Extra Battery (up to 7kWh total) for longer runtime when you need it.
EcoFlow DELTA 3 Ultra Plus Specs:
- Weight: Approx. 33.7kg
- Dimensions: 61.3 x 32.8 x 39.5cm
- Capacity: 3072Wh (51.2V, 60Ah)
- Chemistry: Lithium Iron Phosphate (LiFePO4 / LFP)
- App Control: Yes (Wi-Fi and Bluetooth)
- Smart Output Priority: Yes
- UPS Switchover: Under 10ms
- Max Capacity with Extra Battery: Up to 7kWh (with DELTA Pro 3 Smart Extra Battery)
- Noise: 25dB or less under 600W load
- Operating Humidity: 20% to 95%
- Operating Altitude: 3000m or less
EcoFlow DELTA 3 Ultra Plus Inputs:
- AC Input: 220 to 240V, 10A, 50/60Hz
- AC Charge Time: 0 to 80% in approx. 75 minutes
- AC Charge Time: 0 to 100% in approx. 110 minutes
- Solar Charging: 1600W max (2 x 800W, 11 to 60V, 18A max per port)
- Car Charging: 12V / 24V, 8A
- Alternator Charging: 1000W max
- Charging Methods: AC wall, solar, car, and alternator charging
EcoFlow DELTA 3 Ultra Plus Outputs:
- AC Output: 3600W total (230V, 50Hz)
- Surge Output: 7200W
- X-Boost: Supports compatible devices up to 4600W
- AC Outlets: 4 x AC outputs, 15A max per port
- USB-A Output: 1 x 18W max
- USB-C Output: 1 x 140W max
- USB-C Output: 2 x 45W max (45W total)
- Car Power Output: 12.6V, 10A, 126W max
- Anderson Output: 12.6V, 30A, 378W max
- Note: Anderson and car output share 378W total power
What's in the Box?
- 1 x EcoFlow DELTA 3 Ultra Plus Portable Power Station
- 1 x AC Charging Cable
- 1 x User Manual
- 1 x App Quick Start Guide
- 1 x Warranty Card
- Warranty: 5-year warranty


3600W Output, 7200W Surge. Powerful, Stable, Built to Handle It All
The DELTA 3 Ultra Plus delivers 3600W rated AC output and 7200W surge capacity. With X-Boost 3.0 technology, it supports compatible devices up to 4600W, making it suitable for demanding appliances, kitchen loads, office equipment, RV equipment, and worksite tools.
The inverter is designed to deliver a pure sine wave output for stable power to sensitive electronics. Total connected load must always remain within the rated output of the unit.
Kitchen
Living Room
RV Camping
3 to 7kWh Expandable Capacity
The DELTA 3 Ultra Plus has a single extra battery port, letting you scale from a 3072Wh standalone unit up to 5kWh with a DELTA 3 Max Plus Smart Extra Battery, or up to 7kWh with a DELTA Pro 3 Smart Extra Battery. This makes it suitable for longer outages, extended off-grid use, or customers who need more runtime for selected essentials at home or at the bach.
Compatibility depends on the exact extra battery and connection cable. Please confirm with us before purchasing extra batteries.


Charge Up
The DELTA 3 Ultra Plus supports multiple charging methods so you can keep it topped up at home, on the road, or off-grid. AC wall charging delivers fast top-ups when you have access to mains power, solar charging works for camping, freedom camping, or bach use without mains, and alternator charging keeps the unit topped up while driving.
Wall Charging
0 to 80% in approx. 75 minutes, 0 to 100% in approx. 110 minutes through a standard NZ wall outlet.
Solar Charging
Up to 1600W solar input. 0 to 80% in approx. 101 minutes with suitable panels.
Alternator Charging
Up to 1000W input with the EcoFlow Alternator Charger Plus 1000.
Automotive-Grade Full-Tab LFP Cells
Long-lasting, durable, and ready for emergency backup use. The rugged exterior and intelligent battery management system are designed to support reliable performance across home, office, mobile, and off-grid applications.

Built to Last
From battery chemistry to structural design, the DELTA 3 Ultra Plus is engineered for durability, environmental resilience, and quiet operation.
Battery Protection
Advanced BMS monitors battery condition in real time.
CTC Structure
Cell-to-chassis design, drop resistant up to 0.2m.
Class B Certified
EMC certified, low interference with home electronics.
25dB Quiet
X-Quiet 3.0 fan control for whisper-quiet operation.
Deeper Insights, Easier Control
Monitor battery status, charging behaviour, energy usage, and output settings through the EcoFlow app over Wi-Fi or Bluetooth. Smart Output Priority lets you choose which outputs stay powered, helping to extend runtime for the loads that matter most during an outage.

Compatibility

What's in the Box

Pairs Well With
Expand the DELTA 3 Ultra Plus into a stronger off-grid or backup setup with compatible EcoFlow accessories. The EcoFlow 400W Lightweight Portable Solar Panel is a strong match for fast solar top-ups when camping, travelling, or running off-grid, with the unit accepting up to 1600W solar input total. For mobile setups in motorhomes, campervans, or 4WDs, the EcoFlow Alternator Charger Plus 1000 delivers up to 1000W of charge while driving.
Frequently Asked Questions
What can the EcoFlow DELTA 3 Ultra Plus power?
The DELTA 3 Ultra Plus delivers 3600W of continuous AC output, 7200W surge, and X-Boost support for compatible devices up to 4600W. It can power most common appliances and electronics, including fridges, freezers, microwaves, kettles, routers, computers, communication equipment, power tools, and RV equipment, provided the total connected load stays within the rated output.
Is the DELTA 3 Ultra Plus suitable for home backup during NZ outages?
Yes, for plug-in devices and selected loads. With under 10ms UPS switchover, it is suitable for backup of essentials such as routers, desktop computers, communication equipment, fridges, freezers, and compatible household loads. Any fixed wiring or connection to household circuits must be handled by a qualified NZ electrician using suitable transfer or changeover equipment.
How fast does the DELTA 3 Ultra Plus recharge from a wall outlet?
The DELTA 3 Ultra Plus charges from 0 to 80% in approximately 75 minutes and 0 to 100% in approximately 110 minutes from a standard NZ 230V wall outlet using X-Stream AC charging under suitable conditions. It also supports solar, car, and alternator charging for off-grid and mobile use.
Can I charge the DELTA 3 Ultra Plus with solar panels?
Yes. It supports up to 1600W of solar input across two MPPT inputs (800W per port), making it well suited to off-grid charging, camping, motorhome use, and bach setups when paired with suitable solar panels such as the EcoFlow 400W Lightweight Portable Solar Panel.
Can the DELTA 3 Ultra Plus be expanded with extra batteries?
Yes, with one extra battery. The DELTA 3 Ultra Plus has a single extra battery port and can be expanded to 5kWh with a DELTA 3 Max Plus Smart Extra Battery, or to 7kWh with a DELTA Pro 3 Smart Extra Battery. Compatibility depends on the connection cable, so please confirm with us before purchasing.
What warranty does the EcoFlow DELTA 3 Ultra Plus have in NZ?
The DELTA 3 Ultra Plus has a 5-year warranty.