The catch
EcoFlow DELTA 2 Max
It weighs about 50 pounds, so stairs and repeated lifting are harder than the carry handles imply. It supplies 120V and has no native split-phase 240V output.
Side by side
EcoFlow DELTA 2 Max vs BLUETTI Elite 300: DELTA starts lighter and expands, and Elite stores more in one box
Quick verdict
More energy in a single box means the Elite 300. If you would rather start with a lighter unit and add compatible extra batteries down the line, the DELTA 2 Max fits.
Before you buy
Why, and what it costs you
Using a common load makes reserves easier to compare
A steady 300W load models to about 5.5 hours on EcoFlow DELTA 2 Max and 8 hours on BLUETTI Elite 300.
Where this comes from
The inputs are 2048Wh and 3014.4Wh, and hours = nominal Wh × 0.8 / 300W. A planning allowance for unusable energy and conversion losses, shared by both, sets the 80% factor, and it is not a measured efficiency. Runtime changes with idle draw, temperature and the real load.
The catch
BLUETTI Elite 300
The 2400W total AC limit covers the RV outlet too.
EcoFlow DELTA 2 Max
- Why pick it
- A lighter base unit to start from
- Add on compatible EcoFlow expansion batteries
- The catch
- It weighs about 50 pounds, so stairs and repeated lifting are harder than the carry handles imply. It supplies 120V and has no native split-phase 240V output.
BLUETTI Elite 300
- Why pick it
- One cabinet should supply a longer reserve
- Rely on a documented 30A 12V output
- The catch
- The 2400W total AC limit covers the RV outlet too.
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What this page compares
The Elite 300 is the choice for more energy inside a single box. The DELTA 2 Max suits a lighter starting unit, with compatible extra batteries added later.
The extra weight pays for a real runtime gain
Which one fits
Pick the situations that sound like you
A lighter base unit to start from
For 7.98 pounds more, the Elite 300 brings 966.4Wh more. At a constant 300W with the same planning loss factor, that adds about 2.6 hours of runtime.
- EcoFlow DELTA 2 Max
- Better fit
- BLUETTI Elite 300
- Depends
One cabinet should supply a longer reserve
Elite 300 holds 3,014.4Wh against 2,048Wh. At 300W the extra 966.4Wh gives about 2.6 more modeled hours, and it adds 7.98 lb to lift.
- EcoFlow DELTA 2 Max
- Depends
- BLUETTI Elite 300
- Better fit
The battery has to carry a steady 300W load
Under the shared planning case, EcoFlow DELTA 2 Max gets 5.5 hours and BLUETTI Elite 300 gets 8. Measure actual wattage first, then choose a required overnight reserve.
- EcoFlow DELTA 2 Max
- Depends
- BLUETTI Elite 300
- Depends
I want solar to refill the battery
EcoFlow DELTA 2 Max has a maximum input of 1000W, and BLUETTI Elite 300 has 1200W. Don’t stop at this total. Compare your actual panel strings with the voltage and current limits too.
- EcoFlow DELTA 2 Max
- Depends
- BLUETTI Elite 300
- Depends
In practice
Differences you will notice
Using a common load makes reserves easier to compare
A steady 300W load models to about 5.5 hours on EcoFlow DELTA 2 Max and 8 hours on BLUETTI Elite 300.
How we worked this out
The inputs are 2048Wh and 3014.4Wh, and hours = nominal Wh × 0.8 / 300W. A planning allowance for unusable energy and conversion losses, shared by both, sets the 80% factor, and it is not a measured efficiency. Runtime changes with idle draw, temperature and the real load.
The return on every pound you carry
BLUETTI Elite 300 stores 52 nominal watt-hours per pound, where EcoFlow DELTA 2 Max stores about 41.
How we worked this out
Nominal energy divided by published weight comes to 2048 / 50 and 3014.4 / 57.98. The comparison is of stored energy per lifting weight. It does not measure efficiency or handle comfort.
Greater base capacity and no additional enclosure
Compared with DELTA 2 Max, Elite 300 has about 47% more built-in energy and about 16% more lifting weight.
How we worked this out
Energy: (3014.4 / 2048 - 1) × 100 = 47.2%. Weight: (57.98 / 50 - 1) × 100 = 16.0%.
Option A
EcoFlow, EFD350
DELTA 2 Max
This expandable 2,048Wh station has 2,400W output and two independent 500W solar inputs. It works best with equipment that can stay near where it’s parked.
- Best for
- Backup for essentials that can grow, fed by two solar strings
Facts we checked
- 2,400W rated AC output from a 2,048Wh LFP battery
- Six AC outlets and two 100W USB-C ports, at about 50 lb
- Supported battery expansion, and two 500W solar inputs each at 11–60V and up to 15A
Option B
BLUETTI, Elite 300
Elite 300
This box stores a lot of energy and still fits in a vehicle compartment. A 30A DC output together with an RV socket makes it especially useful on trips that call for longer runtime rather than a bigger inverter.
- Best for
- Van and RV trips with limited storage space and several low-to-moderate loads.
Facts we checked
- 2400W US AC output from a 3014.4Wh battery.
- Dimensions of 14.41 by 12.01 by 11.71 inches, at about 57.98 lb.
- Solar input of 1200W across 12V to 60V, up to 22A.
- A 100W USB-C port and a 140W USB-C port.
- TT-30 RV outlet and a 12V 30A DC connection.
- 1800W US AC bypass limit and 10ms transfer.
Spec by spec
Where they really differ
| Spec | EcoFlow DELTA 2 Max | BLUETTI Elite 300 | In practice |
|---|---|---|---|
| Nominal battery energy | 2048 Wh | 3014.4 Wh | The starting runtime budget comes from stored energy. |
| Continuous AC output | 2400 W | 2400 W | Load screening uses this sustained rating, which is separate from surge and boost modes. |
| Lifting weight | 50 lb | 57.98 lb | Flat ground is where wheels help. A trunk, step or shelf still takes a lift. |
| Maximum solar input | 1000 W | 1200 W | Panel voltage, current and per-port limits have to fit as well. |
| Dedicated battery expansion | Supported with compatible equipment | Fixed base capacity | Integrated battery expansion is not the same as charging from an external source. |
| Published transfer limit | 30 ms | 10 ms | Check the exact device being connected. Even a short transfer specification can’t guarantee that every load runs without interruption. |
Trade-offs
What each pick costs you
With EcoFlow DELTA 2 Max
- Its older transfer specification is slower than that of the DELTA 3 Plus. If you plan a future upgrade, confirm that expansion batteries are still available before you buy.
With BLUETTI Elite 300
- In battery mode it outputs 2400W, but US AC bypass is capped at 1800W.
Decision guide
How to decide
Pick the Elite 300 if you want more energy inside one box. Pick the DELTA 2 Max for a lighter starting unit that you extend later with compatible batteries.
The extra weight pays for a real runtime gain
For 7.98 pounds more, the Elite 300 brings 966.4Wh more. At a constant 300W with the same planning loss factor, that adds about 2.6 hours of runtime.
A 12V requirement can settle the matter
The Elite 300 documents a 30A 12V connection for a suitable DC installation. Confirm connector, fusing and cable requirements instead of judging by how many AC outlets it has.
The long-term answer depends on expansion
Compatible add-on batteries work with the DELTA 2 Max. The Elite 300 has fixed capacity, so think about your final energy requirement before you buy for a multi-day plan.
What this page can’t tell you
- These runtime figures are planning estimates from published capacity. None come from hands-on discharge tests.
- Don’t connect a station to home wiring without approved transfer equipment and qualified installation. A battery station is no medical continuity guarantee.
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
Only 6 of the 50 models checked meet every need here: “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”.
6 models fit, out of 50 checkedThe gap in numbers
BLUETTI Elite 300 lists 3,014.4 Wh for battery capacity, 47% more than the 2,048 Wh on EcoFlow DELTA 2 Max.
- EcoFlow DELTA 2 Max
- 2,048 Wh
- BLUETTI Elite 300
- 3,014.4 Wh
- Models with this figure
- 50 of 50
Show the facts and the math
How we countedThe count uses each product's current fit ratings for “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”. A need with no documented match is not counted.
How we calculatedThese are nominal watt-hour ratings. How much energy you get out depends on inverter losses, temperature and load. For context, 50 of 50 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| EcoFlow DELTA 2 Max |
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| BLUETTI Elite 300 |
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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 2 Max
A lighter base unit to start from
See price & reviews on AmazonBLUETTI Elite 300
One cabinet should supply a longer reserve
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