The catch
EcoFlow DELTA 3
A single 500W solar input can’t take advantage of the 1000W two-input setup on the Plus model.
Side by side
EcoFlow DELTA 3 vs DELTA 3 Plus: Base battery reserve stays the same, and Plus adds solar and USB-C options
Quick verdict
The DELTA 3 fits you if you mostly recharge from a wall outlet or use one modest solar array. The DELTA 3 Plus is the pick for two solar inputs or 140W USB-C charging. Capacity (1024Wh), continuous output (1800W) and listed weight are identical, so the Plus doesn’t buy longer runtime from the battery alone.
Before you buy
Why, and what it costs you
At a 300W load, Plus gives no added nominal runtime
With an 80% usable-energy allowance at 300W, each estimates about 2.73 hours.
Where this comes from
1024 × 0.8 ÷ 300 = 2.73 hours. It is a planning estimate and makes no assumption that tested efficiency is identical.
The catch
EcoFlow DELTA 3 Plus
Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
EcoFlow DELTA 3
- Why pick it
- You charge from the wall, and any solar setup you have fits within 500W.
- 100W USB-C or less is fine for your laptops.
- The catch
- A single 500W solar input can’t take advantage of the 1000W two-input setup on the Plus model.
EcoFlow DELTA 3 Plus
- Why pick it
- Two independent solar inputs, with up to 1000W combined, are what you want.
- Compatible equipment of yours can use two 140W USB-C ports.
- The catch
- Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
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What this page compares
EcoFlow DELTA 3 and DELTA 3 Plus compared on dual solar inputs, laptop charging and expansion, with their equal battery and output spelled out.
Plus is an upgrade in how energy gets in and how USB devices are powered, and it brings no extra battery capacity.
Which one fits
Pick the situations that sound like you
Between weekend trips, I recharge at home
Battery, AC output and nominal carry weight match.
- EcoFlow DELTA 3
- Similar
- EcoFlow DELTA 3 Plus
- Similar
My solar plan calls for two separate input feeds
Two solar inputs come with Plus.
- EcoFlow DELTA 3
- Not suitable
- EcoFlow DELTA 3 Plus
- Better fit
My laptop takes 140W over USB-C
Each USB-C port on the standard DELTA 3 is capped at 100W.
- EcoFlow DELTA 3
- Good
- EcoFlow DELTA 3 Plus
- Better fit
I’d like to add an expansion battery down the line
Compatible EcoFlow expansion batteries work with both.
- EcoFlow DELTA 3
- Similar
- EcoFlow DELTA 3 Plus
- Similar
In practice
Differences you will notice
At a 300W load, Plus gives no added nominal runtime
With an 80% usable-energy allowance at 300W, each estimates about 2.73 hours.
How we worked this out
1024 × 0.8 ÷ 300 = 2.73 hours. It is a planning estimate and makes no assumption that tested efficiency is identical.
One solar cable can’t unlock the full Plus rating
On Plus, a single solar input tops out at 500W, which equals the total ceiling of standard DELTA 3.
How we worked this out
Two separate 500W inputs are on Plus. To reach the 1000W combined ceiling, both need suitable input, within electrical limits.
The USB-C gain is 40W for each compatible device
On Plus, a 140W-capable laptop gets 40W more advertised USB-C headroom, but a 100W laptop gets none.
How we worked this out
140 − 100 = 40W per port. The real charging rate depends on USB Power Delivery negotiation, the cable’s capability and the state of the device.
Option A
EcoFlow, DELTA 3
DELTA 3
This expandable DELTA 3 is for buyers who can do without the extra solar input of the Plus model. Battery and inverter are the same size, so the simpler charging setup may be all you need.
- Best for
- Camping loads and home essentials paired with a moderate solar array.
Facts we checked
- 1800W rated AC output from a 1024Wh battery.
- About 27.6 lb.
- A single 500W solar input, with a range of 11V to 60V.
- Six AC outlets and two 100W USB-C ports.
- Support for compatible DELTA-series expansion batteries.
- 1500W AC charging and under-10ms transfer.
Option B
EcoFlow, DELTA 3 Plus
DELTA 3 Plus
This 1,024Wh station cares more about quick solar recovery and high-power USB-C than about headline battery size. Its two 500W solar inputs can each take a separate panel string.
- Best for
- Backup built around laptops, plus daily solar
Facts we checked
- A 1,024Wh LFP battery paired with 1,800W rated AC output
- Two 140W USB-C ports and sub-10ms transfer, at about 27.6 lb
- Supported expansion to roughly 5kWh, and two 500W solar inputs with 11–60V windows
Spec by spec
Where they really differ
| Spec | EcoFlow DELTA 3 | EcoFlow DELTA 3 Plus | In practice |
|---|---|---|---|
| Battery capacity | 1024Wh | 1024Wh | Fully charged and standalone, each unit starts with the same nominal energy. |
| Continuous AC output | 1800W | 1800W | A larger steady AC load is not something Plus supports. |
| Solar input layout | One input, 500W maximum | Two inputs, 500W each and 1000W combined | Plus can take a larger array, or two separately controlled solar feeds. |
| USB-C ports | Two up to 100W each | Two up to 140W each | The higher USB-C limit helps only compatible devices and cables. |
| Battery expansion | Supported with compatible extra battery | Supported with compatible extra battery | Choosing Plus isn’t required for expansion alone. |
| Listed carry weight | About 27.6 lb | About 27.6 lb | Portability differs mainly by how much extra solar equipment you choose to carry. |
Trade-offs
What each pick costs you
With EcoFlow DELTA 3
- Each USB-C port tops out at 100W instead of 140W.
With EcoFlow DELTA 3 Plus
- IP65 applies to the battery pack, so it isn’t a license to run the whole station in the rain. Expansion batteries and alternator hardware are sold separately.
Decision guide
How to decide
The Plus earns its price when the second solar input or faster USB-C ports fix a real part of your setup.
Plus won’t give you a longer first night
Each unit starts with a 1024Wh battery and an 1800W inverter, so a lamp-and-laptop setup begins with the same nominal energy budget before charging. Real efficiency can differ, but nothing in the specifications shows a runtime advantage for the Plus. If you charge at home and run modest loads, the standard DELTA 3 may be all you need.
Dual solar inputs are the upgrade that counts off the grid
The Plus has two solar inputs, each with its own 500W limit. That helps when a larger array is practical or when two panel groups need separate input control. It doesn’t mean a single port takes 1000W. Check each group’s voltage and current, along with the right cable and polarity.
Treat laptop charging and AC appliance power as separate things
Compatible laptops and other high-power USB devices can make good use of the two 140W USB-C ports, but those ports don’t raise the 1800W AC rating. A laptop that negotiates 65W draws about 65W from either station. Checking its real charging requirement therefore beats buying the bigger USB number by default.
What this page can’t tell you
- A solar panel’s nameplate output doesn’t guarantee a charging rate.
- Equal capacity alone gives no basis for claiming a measured runtime or charging-speed advantage.
By the numbers
What the data shows
What we found across the portable power stations we compare, plus the checked facts behind each finding.
How many fit
20 of the 50 models checked meet every need here: “Solar will be a real part of how I recharge”, “I charge modern laptops straight from it”, and “I might expand battery capacity later”.
20 models fit, out of 50 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Solar will be a real part of how I recharge”, “I charge modern laptops straight from it”, and “I might expand battery capacity later”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| EcoFlow DELTA 3 |
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| EcoFlow DELTA 3 Plus |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
EcoFlow DELTA 3
You charge from the wall, and any solar setup you have fits within 500W.
See price & reviews on AmazonEcoFlow DELTA 3 Plus
Two independent solar inputs, with up to 1000W combined, are what you want.
See price & reviews on AmazonEach link opens in a new tab.
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