Home Power Facts EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000
The EcoFlow DELTA Pro 3 delivers more usable capacity than the Goal Zero Yeti PRO 4000 (about 3,650 Wh vs 3,195 Wh). The EcoFlow DELTA Pro 3 has the stronger inverter (4,000 W vs 3,600 W continuous). A typical refrigerator runs about 2.3 days on the EcoFlow DELTA Pro 3 and 47.9 h on the Goal Zero Yeti PRO 4000.
Specs verified 2026-10-19. Every value below links to its source.
Where they differ
Better on 6 of 7
EcoFlow DELTA Pro 3
- EcoFlow DELTA Pro 3: more usable capacity (3,650 Wh vs 3,195 Wh, Goal Zero Yeti PRO 4000).
- EcoFlow DELTA Pro 3: higher continuous AC output (4,000 W vs 3,600 W, Goal Zero Yeti PRO 4000).
- EcoFlow DELTA Pro 3: higher surge rating (8,000 W vs 7,200 W, Goal Zero Yeti PRO 4000).
- EcoFlow DELTA Pro 3: lighter (113.5 lb vs 115.7 lb, Goal Zero Yeti PRO 4000).
- EcoFlow DELTA Pro 3: lower list price (3,299 USD vs 3,999.95 USD, Goal Zero Yeti PRO 4000).
- EcoFlow DELTA Pro 3: lower price per usable Wh ($0.90 vs $1.25, Goal Zero Yeti PRO 4000), the fairest value measure across sizes.
Better on 1 of 7
Goal Zero Yeti PRO 4000
- Goal Zero Yeti PRO 4000: more solar input (3,000 W vs 2,600 W, EcoFlow DELTA Pro 3).
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Specs side by side
| Spec | EcoFlow DELTA Pro 3 | Goal Zero Yeti PRO 4000 |
|---|---|---|
| Rated capacity | 4,096 Wh[source]Manual: 'Rated Capacity | 4096Wh 51.2V⎓ 80Ah'. | 3,994 Wh[source]'Battery Capacity 3994 Wh(51.2 V, 78 Ah)'. Elsewhere on the page: 'Battery Pack Capacity: 3993.6 Wh'. |
| Usable capacity (measured) | 3,650 Wh[source]The Solar Lab: ran a 3,650 W load for '60 minutes at this near-maximum load, translating to about 89% efficiency' (~3,650 Wh, calculated from their load and runtime; 89% of 4096 = 3,645 Wh). Voltage (120/240 V) not stated. Other result: OutdoorGearLab measured 3,790 Wh AC (93%) (outdoorgearlab.com best power station roundup). WhatPowerFor lists 3,950 Wh but its method is unclear and it was not used. | Not publishedNo independent measured usable capacity found (searched 2026-10-19). Checked The Solar Lab, CleanTechnica, TechRadar and Outdoor Life; none publishes a discharge figure. |
| AC continuous output | 4,000 W[source]Manual (US): 'Discharge Only: 120V~60Hz 4000W total (surge 8000W); 120/240V~60Hz 4000W total (surge 8000W)'. Product page: '4000W, 6000W with X-boost'. | 3,600 W[source]'AC (Inverter)(pure sine wave): 3600 W Continuous, 7200 W Surge, 120 V AC, 60 Hz, 30 A'. A single 20 A outlet is limited to 2400 W. |
| AC surge output | 8,000 W[source]Manual: '4000W total (surge 8000W)'. Product page: 'AC Surge Output 8000W'. | 7,200 W[source]'7200 W Surge'. |
| 240 V output | Yes[source]Manual (US): 'High-voltage / Split phase: 1× NEMA L14-30R, 120V/240V~16.7A'. Product FAQ: 'it can perform split-phase output as a standalone unit', but not at the same time as the 120 V outlets. | No[source]One unit outputs 120 V only. The guide's display icons include 'Yetis Chained in Series (240V)', so 240 V needs two linked units. Its AC input accepts '240V AC up to 13A (3000W max)' in, not out. |
| Battery chemistry | LiFePO4[source]Manual: 'Cell Chemistry | LFP (LiFePO4)'. | LiFePO4[source]'Cell chemistry LiFePO4 (Lithium Iron Phosphate)'. |
| Cycle life | 4000 cycles to 80%[source]Manual: 'The battery maintains 80%+ SoH (State of Health) after 4000 cycles at 0.5C/0.5C at 25°C (77°F)'. | 4,000 cycles to 80%[source]Product page: '4000+ (1C discharge 80% ODC)'. User guide: '4000 (0.5C discharge, climate controlled, 80% original capacity.)'. |
| AC charging | 1,800 W[source]Manual (US) AC input: 'Charge Only: 100-240V~15A 50/60Hz'. 1800 W is 15 A × 120 V (calculated, not stated as watts). At 240 V the same 15 A rating allows more; the EcoFlow FAQ says the US grid port 'only supports AC 120V 2000W charging', and the separate AC POWER IN/OUT port accepts '100/200V-120/240V~20A'. | 1,800 W[source]'AC Fast Charge: 1800W (90V-144V, up to 15A)'. Ships set to a 400 W 'Low' charge speed (user guide). |
| Max solar input | 2,600 W[source]Product page: 'Solar Charging Input 2600W total, 2 ports'. | 3,000 W[source]'HPP High Voltage Input: 3000W Max (13.3-150 V, up to 30A)'. The separate 8 mm input adds at most 275 W. |
| Expandable | Yes[source]Manual: 'This power station supports connecting up to 2 extra batteries to expand capacity.' | Yes[source]'Chainable Yes (Up to 4 tank Pros per Yeti Pro)'. |
| UPS / EPS switchover | 10 ms[source]Manual: 'The power station acts as a standby UPS with a transfer time of 10 ms.' | 15 ms[source]User guide, Automatic Power Switching: 'switches from grid to battery in under 15ms, but it does not support 0ms switching.' |
| Weight | 113.5 lb[source]Manual: 'Net. Weight | Approx. 51.5 kg (113.54 lb)'. | 115.7 lb[source]'Weight 115.7 lbs (52kg)'. With the roll cart: '125.7 lbs. (57.0 kg)'. |
| Warranty | 5 years[source]US warranty policy: 'DELTA Pro 3 | 5 years'. Product page: '3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration'. | 5 years[source]'Warranty: 5 years'. |
| List price | $3,299[source]Regular (compare-at) price $3,299 for the bare 'DELTA Pro 3' variant, sale price $2,799, seen 2026-10-19. | $3,999.95[source]Regular price seen 2026-10-19, no sale (compare-at also $3,999.95). In stock. |
| Usable capacity used for runtimes | 3,650 Wh | 3,195 Wh (est. 80%) |
Runtime on one charge
| Appliance | EcoFlow DELTA Pro 3 | Goal Zero Yeti PRO 4000 |
|---|---|---|
| Refrigerator | 2.3 days | 47.9 h |
| Chest freezer | 6.2 days | 5.4 days |
| CPAP (no humidifier) | 3.4 days | 3 days |
| CPAP with heated humidifier | 40.6 h | 35.5 h |
| Sump pump (1/3 hp) | 5.6 h | 4.9 h |
| Sump pump (1/2 hp) | 3.9 h | 3.5 h |
| Gas furnace blower (1/2 hp) | 6.6 h | 5.8 h |
| Window AC (5,000 BTU) | 10.5 h | 9.2 h |
| Microwave | 4.1 h | 3.6 h |
| Coffee maker | 3 h | 2.7 h |
| Laptop charger | 2.5 days | 2.2 days |
| Phone charger | 7.6 days | 6.7 days |
| Wi-Fi router / modem | 10.1 days | 8.9 days |
| TV (LED, 32-55 inch) | 2.2 days | 47 h |
| LED light bulb (each) | 16.9 days | 14.8 days |
| Space heater | 2.4 h | 2.1 h |
| Well pump (1/2 hp, 240 V) | 4.2 h | No |
| Oxygen concentrator (home, 5 L/min) | 10.4 h | 9.1 h |
| Starlink (Standard kit) | 41.5 h | 36.3 h |
| Desktop PC + monitor | 40.6 h | 35.5 h |
| Electric blanket (queen) | 14 h | 12.3 h |
| Box fan (20 inch) | 44 h | 38.5 h |
| Dehumidifier (35-50 pint) | 7.5 h | 6.6 h |
| Portable air conditioner (8,000-10,000 BTU) | 3 h | 2.6 h |
| Electric kettle | 2.4 h | 2.1 h |
| Portable induction cooktop (single burner) | 2 h | 1.8 h |
| Air fryer | 2.4 h | 2.1 h |
| Mini fridge (compact, ~3 cu ft) | 6.1 days | 5.3 days |
| Garage door opener | 5.1 h | 4.4 h |
Runtime = usable capacity ÷ average draw, the same formula for both models (no idle draw added to either), after checking continuous output and startup surge. Usable capacity is an independent test's measured figure, or 80% of rated where none exists. See the methodology.