EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000
Two of the home backup power stations (3 kwh+) in our best home backup power stations and whole-home batteries comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: 4 kWh with 120/240 V outlets and 2,600 W solar
Check price at AmazonBest for: A 4 kWh Yeti with 3,000 W solar and Tank PRO expansion
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | EcoFlow DELTA Pro 3 | Goal Zero Yeti PRO 4000 | Weight |
|---|---|---|---|
| Battery capacityUsable runtime scales with watt-hours. A 1,000 Wh station runs a 100 W load for roughly 8–9 hours once inverter losses are counted. | 4096 Wh | 3994 Wh | 25% |
| Continuous AC outputThe rated (continuous) inverter output decides which appliances you can plug in. We use the rated figure, not surge or 'boost' modes. | 4000 W | 3600 W | 20% |
| Max solar inputHigher solar input means faster recharging off-grid, if you have enough panels to use it. | 2600 W | 3000 W | 15% |
| WeightLighter is easier to carry to a campsite or between rooms. | 51.5 kg | 52.5 kg | 10% |
| Max AC charging powerMore AC input watts means a faster wall recharge before a trip or storm. | Not listed | 1800 W | 5% |
| 240 V output (listed)240 V output runs well pumps, dryers and other 240 V circuits through a transfer switch or home panel. We mark Yes only when the maker lists 240 V output on the unit itself. | Yes | Not listed | 10% |
| Rated cycle lifeHow many full cycles the maker rates the battery for. Thresholds differ (70% vs 80% remaining capacity), so read the note under each product. | 4000 cycles | 4000 cycles | 10% |
| Surge / peak outputShort bursts for motor start-up (fridges, pumps). Skipped when the maker doesn't publish a surge figure. | 8000 W | 7200 W | 5% |
| Chemistry | LFP | LiFePO4 | info |
| Cycle rating | 4,000 cycles to 80% | 4,000+ (1C discharge, 80%) | info |
| AC output | 4,000 W (6,000 W X-Boost), 8,000 W surge; 120/240 V | 3,600 W continuous, 7,200 W surge; TT-30R | info |
| Outlets | 4 × NEMA 5-20R, TT-30R, 6-20R (240 V), L14-30R (120/240 V) | Not listed | info |
| Solar input | 2,600 W total (High-PV 1,600 W + Low-PV 1,000 W) | HPP high-voltage 3,000 W max (13.3–150 V) | info |
| Expansion | 12 kWh with 2 extra batteries; 48 kWh systems with EcoFlow Smart Home Panel 2 | Up to 4 Tank PRO batteries | info |
| UPS | 10 ms | Not listed | info |
| IP rating | IP65 battery | Not listed | info |
| Weight | 51.5 kg (113.54 lb) | 115.7 lb (52.5 kg); 125.7 lb with cart | info |
| SKU | Not listed | 37500 | info |
| Capacity | Not listed | 3,993.6 Wh (51.2 V, 78 Ah) | info |
| AC input | Not listed | 1,800 W | info |
| Warranty | Not listed | 5 years | info |
| VoltPick score | 4.1/10 | 3.2/10 | 100% |
Where each one comes out ahead
EcoFlow DELTA Pro 3
Better published figure on: Battery capacity, Continuous AC output, Weight, Surge / peak output.
What we like
- 120/240 V on the unit, including L14-30R
- 2,600 W dual solar input
- 4,000 cycles to 80%
- 10 ms UPS
Watch out for
- Over 50 kg
- Not compatible with DELTA Pro or DELTA Pro Ultra accessories (EcoFlow note)
Goal Zero Yeti PRO 4000
Better published figure on: Max solar input.
What we like
- 3,000 W solar input
- TT-30R for RVs
- Expands with up to four Tank PRO batteries
- 4,000 cycles to 80%
Watch out for
- 52.5 kg
- Goal Zero doesn't list 240 V output on the unit
Verdict
Similar capacity. Goal Zero takes more solar (3,000 W); EcoFlow adds 240 V, a higher output and a 10 ms UPS.
- EcoFlow DELTA Pro 3: EcoFlow: DELTA Pro 3 specs
- Goal Zero Yeti PRO 4000: Goal Zero: Yeti PRO 4000 specifications