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EcoFlow DELTA Pro 3
Spec sheet built from EcoFlow's own product page, with runtime estimates from our calculator. We haven't tested this unit; every figure below is the manufacturer's and is linked under Sources.
Check current price (PLACEHOLDER link) Run it in the runtime calculator
Specifications
| Capacity | 4,096 Wh |
|---|---|
| Continuous AC output | 4,000 W |
| Surge / peak | 8,000 W |
| Chemistry | LFP |
| Weight | 113.54 lb |
| Manufacturer price (Nov 9, 2026) | $2,799 (was $3,299) |
| AC output | 120V and 240V (split-phase); 4,000W continuous, 6,000W with X-Boost, 8,000W surge |
| AC charging input | 100-240V, 15A (charge only); bypass 100-120V 15A (3 hours max), 12A continuous |
| Solar input | 2,600W total over 2 ports (high-PV 30-150V 1,600W max; low-PV 11-60V 1,000W max) |
| Expandable capacity | Up to 12kWh per unit with 2 DELTA Pro 3 Extra Batteries; 36kWh across 3 units with Smart Home Panel 2 and 6 extra batteries (EcoFlow quotes up to 48kWh when its Smart Generators are added) |
| UPS switchover | 10 ms |
| Cell chemistry / cycle life | LFP; 4,000 cycles to 80% capacity |
| Battery pack rating | IP65 (battery pack); main unit IP20, so use indoors or in a sheltered, ventilated spot |
| Charging temperature | 32°F to 113°F (0°C to 45°C) |
| Discharging temperature | 14°F to 113°F (-10°C to 45°C) |
| Dimensions | 16.16 x 13.43 x 27.28 in |
| Weight | 113.54 lb (51.5 kg) |
| Warranty | 5 years |
| Home connection options (per EcoFlow) | EcoFlow Smart Home Panel 2, an inlet box via the L14-30 outlet, or a manual transfer switch, all installed by a qualified professional |
Estimated runtimes
These use our planning factor of 0.8 usable energy (for inverter losses and reserve) and the appliance wattages published by Honda and Champion. They assume continuous running, so cycling loads will usually last longer.
- Energy Star refrigerator (192 W running): about 17.1 hours of compressor run time
- CPAP without heated humidifier (60 W): about 55 hours
- 1/3 HP furnace blower (700 W running in Honda's chart): about 4.7 hours of blower run time. Many blowers draw less, so check the nameplate. Furnace guide
Who it's for
The DELTA Pro 3 is a whole-home-adjacent unit rather than a camping battery. It has 240V output, up to 12kWh on one unit with extra batteries, and 2,600W of solar input, and at 113.5 lb it's on wheels and mostly stays put. It fits buyers planning multi-day outages who want to run a furnace blower, well pump or 240V load through a professionally installed transfer switch or EcoFlow's Smart Home Panel 2. If you only need a fridge, router and lights for a night, a 1 to 2 kWh unit costs far less per outage hour you'll actually use.
How it compares on price per Wh
At the manufacturer's price on Nov 9, 2026, the EcoFlow DELTA Pro 3 works out to 1.46 Wh per dollar, #8 of 12 models we track. Similar-capacity alternatives:
- Jackery Explorer 5000 Plus: 5,040 Wh, 7,200 W, $3,499 (1.44 Wh/$)
FAQ
Can the EcoFlow DELTA Pro 3 run 240V appliances?
Yes. EcoFlow lists 120V and 240V output, including a NEMA L14-30R split-phase outlet and a NEMA 6-20R 240V outlet, with up to 4,000W continuous. The 120V and 240V outlet groups can't be switched on at the same time.
How much can the DELTA Pro 3 be expanded?
EcoFlow says a single unit reaches 12kWh with two DELTA Pro 3 Extra Batteries. Three units paired with Smart Home Panel 2 and six extra batteries reach 36kWh, and EcoFlow quotes up to 48kWh when its Smart Generator 4000 units are added.
Can it charge in the cold?
EcoFlow lists a charging range of 0°C to 45°C (32°F to 113°F) and a discharging range of -10°C to 45°C (14°F to 113°F), so keep it somewhere above freezing if you plan to recharge it during a winter outage.