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Complete 7200W modular backup power system starting at 6kWh and expandable up to 24kWh options on this page
The EcoFlow DELTA Pro Ultra is a powerful modular home backup and off-grid energy system designed for serious energy independence. Delivering up to 7200W of AC output, this system can be configured with 1 to 4 battery modules, making it suitable for everything from basic backup power through to full off-grid living.
7200W Power Output 6kWh–24kWh Options Expandable System Solar Ready Plug & PlayRun high-demand appliances including kettles, pumps, power tools, fridges and essential home circuits with a powerful 7200W inverter.
Select from 6kWh, 12kWh, 18kWh or 24kWh system sizes. Start small or build a serious off-grid system from day one.
Recharge daily using solar panels, making this system ideal for remote locations and off-grid setups.
Add more batteries over time as your needs grow. No need to replace your system later.
This is a complete system based on the option selected above.
For off-grid and remote use, solar panels are what keep your system running day to day. The DELTA Pro Ultra supports high solar input, allowing you to recharge your batteries each day using sunlight.
As a general guide, your solar array should be sized to match your battery capacity and daily usage:
| System Size | Recommended Solar Array |
|---|---|
| 6kWh | 1.5kW – 2.5kW solar |
| 12kWh | 2.5kW – 4kW solar |
| 18kWh | 4kW – 5.5kW solar |
| 24kWh | 5kW – 7kW solar |
These are general guidelines and will vary depending on location, sunlight hours, and how much power you use each day.
Not sure what system size or solar setup you need? Get in touch and we’ll recommend the right setup for your needs.
Most customers choose the 12kWh or 18kWh system for reliable everyday use.
| System | Capacity | Best For |
|---|---|---|
| Starter | 6kWh | Backup power, light use |
| Recommended | 12kWh | Everyday household use |
| Extended | 18kWh | Larger loads, more headroom |
| Full Off-Grid | 24kWh | Full-time off-grid living |
Most customers looking for reliable everyday use choose the 12kWh or 18kWh system.
This system grows with you. Add additional batteries later without replacing your existing setup.
| AC Output | 7200W |
|---|---|
| Battery Capacity | 6kWh–24kWh (depending on option) |
| Charging Methods | AC, Solar, Generator |
| System Type | Modular Power System |
Yes. Includes 1–4 batteries depending on your selected system size.
Yes. Additional batteries can be added anytime.
Yes. Larger battery options are ideal for full-time off-grid use.
Yes. Designed for solar integration and off-grid energy systems.
We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at The Off Grid Store.
We can deliver to almost anywhere in New Zealand, unfortunately there are a few exceptions such as Chatham Islands and for larger items and Great Barrier Island. Best prices online guaranteed.
30 Day Easy Returns. Not happy with your product, we'll take it back no
questions asked.
Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we
know you'll love them. But if there is ever something wrong, we'll fix it.
| Product | SI Metro | SI Rural | NI Metro | NI Rural |
|---|---|---|---|---|
| EcoFlow TRAIL Plus 300 | 25 | 35 | 20 | 30 |
| EcoFlow RIVER 2 | 35 | 45 | 25 | 35 |
| EcoFlow RIVER 2 Pro | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 Plus | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 Max | 45 | 55 | 35 | 45 |
Shipping times typically 2–5 working days depending on location.
Complete 7200W modular backup power system starting at 6kWh and expandable up to 24kWh options on this page
The EcoFlow DELTA Pro Ultra is a powerful modular home backup and off-grid energy system designed for serious energy independence. Delivering up to 7200W of AC output, this system can be configured with 1 to 4 battery modules, making it suitable for everything from basic backup power through to full off-grid living.
7200W Power Output 6kWh–24kWh Options Expandable System Solar Ready Plug & PlayRun high-demand appliances including kettles, pumps, power tools, fridges and essential home circuits with a powerful 7200W inverter.
Select from 6kWh, 12kWh, 18kWh or 24kWh system sizes. Start small or build a serious off-grid system from day one.
Recharge daily using solar panels, making this system ideal for remote locations and off-grid setups.
Add more batteries over time as your needs grow. No need to replace your system later.
This is a complete system based on the option selected above.
For off-grid and remote use, solar panels are what keep your system running day to day. The DELTA Pro Ultra supports high solar input, allowing you to recharge your batteries each day using sunlight.
As a general guide, your solar array should be sized to match your battery capacity and daily usage:
| System Size | Recommended Solar Array |
|---|---|
| 6kWh | 1.5kW – 2.5kW solar |
| 12kWh | 2.5kW – 4kW solar |
| 18kWh | 4kW – 5.5kW solar |
| 24kWh | 5kW – 7kW solar |
These are general guidelines and will vary depending on location, sunlight hours, and how much power you use each day.
Not sure what system size or solar setup you need? Get in touch and we’ll recommend the right setup for your needs.
Most customers choose the 12kWh or 18kWh system for reliable everyday use.
| System | Capacity | Best For |
|---|---|---|
| Starter | 6kWh | Backup power, light use |
| Recommended | 12kWh | Everyday household use |
| Extended | 18kWh | Larger loads, more headroom |
| Full Off-Grid | 24kWh | Full-time off-grid living |
Most customers looking for reliable everyday use choose the 12kWh or 18kWh system.
This system grows with you. Add additional batteries later without replacing your existing setup.
| AC Output | 7200W |
|---|---|
| Battery Capacity | 6kWh–24kWh (depending on option) |
| Charging Methods | AC, Solar, Generator |
| System Type | Modular Power System |
Yes. Includes 1–4 batteries depending on your selected system size.
Yes. Additional batteries can be added anytime.
Yes. Larger battery options are ideal for full-time off-grid use.
Yes. Designed for solar integration and off-grid energy systems.
We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at The Off Grid Store.
We can deliver to almost anywhere in New Zealand, unfortunately there are a few exceptions such as Chatham Islands and for larger items and Great Barrier Island. Best prices online guaranteed.
30 Day Easy Returns. Not happy with your product, we'll take it back no
questions asked.
Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we
know you'll love them. But if there is ever something wrong, we'll fix it.
| Product | SI Metro | SI Rural | NI Metro | NI Rural |
|---|---|---|---|---|
| EcoFlow TRAIL Plus 300 | 25 | 35 | 20 | 30 |
| EcoFlow RIVER 2 | 35 | 45 | 25 | 35 |
| EcoFlow RIVER 2 Pro | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 Plus | 45 | 55 | 35 | 45 |
| EcoFlow RIVER 3 Max | 45 | 55 | 35 | 45 |
Shipping times typically 2–5 working days depending on location.
