EcoFlow DELTA 3 Ultra Plus vs. BLUETTI Elite 300

For most buyers choosing between the EcoFlow DELTA 3 Ultra Plus and the BLUETTI Elite 300, the DELTA 3 Ultra Plus is the better pick. The Elite 300 is the better pick only for a buyer who needs a TT-30 RV outlet built in and a lighter station.

The makers’ published specs, current in November 2026, are what this comparison is based on. PowerPicked Editorial did not test either station.

How do their specs compare?

Wh is short for watt-hour and counts stored energy. W stands for watt and counts power. AC output is the power plug-in devices draw. Solar input is the greatest power a station can draw from panels.

The DELTA 3 Ultra Plus holds 58 Wh more than the Elite 300. It gives 1,200 W more AC output than the Elite 300. It lists 400 W more solar input than the Elite 300. The Elite 300 is the lighter station, at 58 lb against 74.3 lb, a gap of 16.3 lb.

Which station suits you?

This station gives home backup buyers about 3 kWh and 3,600 W, with room to grow to 11 kWh. The Elite 300 fits RV owners and home backup buyers after about 3 kWh with a TT-30 outlet, with no plans to add batteries.

What does the DELTA 3 Ultra Plus give you?

Output is 3,600 W, with surge to 7,200 W. It lists 1,600 W of solar input. Noise stays at 25 dB or less under a 600 W load. Its weight of about 74.3 lb makes it heavy. App registration unlocks the full 5-year warranty.

Best for more output and expansion

EcoFlow DELTA 3 Ultra Plus

Capacity

3,072 Wh

AC output

3,600 W

Solar input

1,600 W

Weight

74.3 lb

Who it's for: Home backup buyers who want about 3 kWh and 3,600 W in one unit that can grow to 11 kWh.

Strengths

• 3,600 W output with a 7,200 W surge rating
• 1,600 W solar input
• Listed at 25 dB or less at 600 W

Weaknesses

• Heavy at about 74.3 lb
• Full 5-year warranty needs app registration

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LFP, or LiFePO4, is the battery type, at 51.2 V and 60 Ah for 3,072 Wh. At 120 V, AC output totals 3,600 W, with surge to 7,200 W. With X-Boost, resistive appliances reach 4,600 W. It accepts up to 1,600 W of solar input. Solar plus generator dual charging fills it to 80% in about 48 minutes. Its UPS switchover is under 10 ms. Extra batteries grow it to 11 kWh from 3 kWh.

For the runtime numbers, take 85% of the listed capacity. That gives about 2,611.2 Wh, which is 3,072 Wh times 0.85. A 100 W load would run for about 26.1 hours on that energy. Each pound carries about 41.3 Wh, with 3,072 Wh over 74.3 lb.

For a full review of the DELTA 3 Ultra Plus on its own, see the EcoFlow DELTA 3 Ultra Plus review.

What does the BLUETTI Elite 300 give you?

It carries a TT-30 RV outlet built in, plus a 12 V, 30 A DC port. It lists 1,200 W of solar input. It is rated for 6,000 or more cycles. Expansion batteries cannot be added. Its weight of about 58 lb makes it heavy to carry.

Best for RV TT-30 outlet

BLUETTI Elite 300

Capacity

3,014 Wh

AC output

2,400 W

Solar input

1,200 W

Weight

58 lb

Who it's for: RV owners and home backup buyers who want about 3 kWh with a TT-30 outlet, without adding batteries.

Strengths

• Built-in TT-30 RV outlet and 12V/30 A DC port
• 1,200 W solar input
• Rated for 6,000+ cycles to 80%

Weaknesses

• Can't add expansion batteries
• Heavy to carry at about 58 lb

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The battery uses LiFePO4, at 3,014.4 Wh and 314 Ah. Its cycle rating runs to 80% capacity after 6,000 or more cycles. It gives 2,400 W of AC output at 120 V. Power Lifting mode lifts resistive loads to 4,800 W. A full AC charge takes about 2 hours at 1,800 W. Solar charging tops out at 1,200 W and fills it in about 4.1 hours. With AC and solar at 2,400 W, it hits 80% in 78 minutes. UPS switchover is 10 ms or less. Pass-through charging works on it. Expansion is none, as BLUETTI says it can’t link with its expansion batteries.

For this section, take 85% of the listed capacity. That gives about 2,561.9 Wh, which is 3,014 Wh times 0.85. A 100 W load would run for about 25.6 hours on that energy. Each pound carries about 52.0 Wh, with 3,014 Wh over 58 lb.

For a full review of the Elite 300 on its own, see the BLUETTI Elite 300 review.

How to choose

First, weigh AC output: 3,600 W for the DELTA 3 Ultra Plus against 2,400 W for the Elite 300. Pick the DELTA 3 Ultra Plus when a device needs more than 2,400 W.

Second, weigh expansion. The DELTA 3 Ultra Plus takes extra batteries to grow from 3 to 11 kWh. The Elite 300 takes no extra batteries. Pick the DELTA 3 Ultra Plus when you plan to add batteries later.

Third, weigh the TT-30 outlet. A built-in TT-30 RV outlet is on the Elite 300. Pick the Elite 300 when an RV needs a TT-30 outlet.

FAQ

Which station has more AC output?

The EcoFlow DELTA 3 Ultra Plus has more AC output: 3,600 W, while the BLUETTI Elite 300 has 2,400 W. The gap is 1,200 W.

Which station lists the most solar input?

The EcoFlow DELTA 3 Ultra Plus lists the most solar input, at 1,600 W. The BLUETTI Elite 300 lists 1,200 W. The gap is 400 W.

Which station can add batteries?

The EcoFlow DELTA 3 Ultra Plus can add batteries, growing from 3 to 11 kWh. The BLUETTI Elite 300 cannot add batteries.

Which station is the lighter one?

The BLUETTI Elite 300 is the lighter one, at 58 lb. The EcoFlow DELTA 3 Ultra Plus is 74.3 lb. The gap is 16.3 lb.