EcoFlow DELTA Pro Ultra vs OUPES Guardian 6000 V2
The EcoFlow DELTA Pro Ultra holds 6,144 Wh against 4,608 Wh for the OUPES Guardian 6000 V2, and gives 7,200 W against 6,000 W of continuous output. In October 2026 the DELTA Pro Ultra cost $0.94 per Wh of rated capacity and the Guardian 6000 V2 $0.59. Neither is ranked above the other here: each row below shows where one leads, so the right pick depends on what you need to run.
Updated
The two in numbers
6,144 / 4,608Wh
Capacity
7,200 / 6,000W
Output
$0.94 / $0.59
Price per Wh
1.5 h / 1.7 h
Solar refill, peak sun
Figures read DELTA Pro Ultra first, Guardian 6000 V2 second.
Which one suits what
One line per criterion, each with the numbers behind it. There is no overall winner: weigh the lines that matter for your list.
- Longer runtime on the same load: the EcoFlow DELTA Pro Ultra, with 6,144 Wh against 4,608 Wh for the Guardian 6000 V2. Runtime follows usable watt hours.
- Bigger loads at once: the EcoFlow DELTA Pro Ultra, with 7,200 W against 6,000 W for the Guardian 6000 V2. Continuous output caps what runs at the same moment.
- Motor and compressor starts: the EcoFlow DELTA Pro Ultra, with 10,800 W against 9,000 W for the Guardian 6000 V2. The surge rating covers the start of a fridge, pump or tool.
- Carrying it: the OUPES Guardian 6000 V2, with 111.8 lb (50.7 kg) against 181.7 lb (82.4 kg) for the DELTA Pro Ultra. Lighter is easier to move.
- Price per watt hour: the OUPES Guardian 6000 V2, with $0.59 against $0.94 for the DELTA Pro Ultra. Prices as stored for October 2026; sale prices change often.
- Solar refill: the EcoFlow DELTA Pro Ultra, with 1.5 h of peak sun against 1.7 h of peak sun for the Guardian 6000 V2. From empty at each station's own solar limit.
Running time, side by side
Each appliance on its own on a full charge, at 85% efficiency. Loads used for minutes a day show minutes of use.
| Appliance | Watts | DELTA Pro Ultra | Guardian 6000 V2 |
|---|---|---|---|
| Phone charging | 20 W | 10.9 days | 8.2 days |
| Laptop (while charging) | 65 W | 3.3 days | 2.5 days |
| Wi-Fi router and modemestimate | 28 W | 7.8 days | 5.8 days |
| LED bulb, 60 W equivalent (800 lumens) | 8.5 W | 25.6 days | 19.2 days |
| TV, 55 inch LED (LCD) | 82 W | 2.7 days | 47.8 h |
| CPAP machine (no humidifier) | 11 W | 19.8 days | 14.8 days |
| CPAP machine with heated humidifier | 56 W | 3.9 days | 2.9 days |
| Oxygen concentrator (home, stationary) | 290 W | 18.0 h | 13.5 h |
| Box fan (20 inch) | 125 W | 41.8 h | 31.3 h |
| Refrigerator (modern, full size) | 275 W | 4.0 days | 3.0 days |
| Chest freezer | 300 W | 6.5 days | 4.9 days |
| Sump pump (1/2 HP) | 925 W | 5.6 h | 4.2 h |
| Drip coffee maker | 900 W | 5.8 h of use | 4.4 h of use |
| Microwave oven (1,000 W cooking power) | 1,530 W | 3.4 h of use | 2.6 h of use |
| Electric kettle | 1,500 W | 3.5 h of use | 2.6 h of use |
| Window air conditioner (5,000 BTU) | 525 W | 9.9 h | 7.5 h |
| Electric space heater (1,500 W) | 1,500 W | 3.5 h | 2.6 h |
Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
Specifications
| Specification | DELTA Pro Ultra | Guardian 6000 V2 |
|---|---|---|
| Rated capacity | 6,144 Wh | 4,608 Wh |
| Battery chemistry | LiFePO4 (lithium iron phosphate) | LiFePO4 (lithium iron phosphate) |
| Cycle life | 3,500 cycles to 80% capacity | 4,000 cycles to 80% capacity |
| Continuous AC output | 7,200 W | 6,000 W |
| Surge rating | 10,800 W | 9,000 W |
| AC outlets | 6 | Not published |
| AC voltage | 120 V and 240 V | 120 V and 240 V |
| 240 V | 240 V split phase on its own | 240 V split phase on its own |
| TT-30 RV outlet | yes | yes |
| L14-30 outlet | yes | yes |
| USB-C | 2 ports, up to 100 W | 1 port, up to 140 W |
| USB-A | 2 ports | 2 ports |
| Wall charging input | up to 3,000 W | up to 3,600 W |
| Solar input | up to 5,600 W | up to 3,600 W |
| Expansion batteries | yes, up to 30,000 Wh in total (DELTA Pro Ultra Series Smart Extra Battery) | yes, up to 41,400 Wh in total (G5 Extra Battery) |
| Backup (UPS) switchover | pass through | 20 ms or faster |
| Weight | 181.7 lb (82.4 kg) in total, sold as separate pieces | 111.8 lb (50.7 kg) |
| Charges down to | -4 °F (-20 °C) | Not published |
| Runs down to | -4 °F (-20 °C) | Not published |
| Ingress rating | IP54 | Not published |
| Noise | 30 dB | Not published |
| App connection | Wi-Fi, Bluetooth, cellular | Bluetooth, Wi-Fi |
| Warranty | 5 years | 5 years |
| Boost mode | Not published | Boost Mode, up to 7,200 W for resistive loads |
| Size (box) | Not published | 25 × 16.8 × 16.3 in |
Solar refill counts 75% of each station's own solar limit reaching the battery; at 4 peak sun hours a day, divide by 4 for days.
The two stations
EcoFlow's page for the DELTA Pro Ultra (opens in a new tab) OUPES's page for the Guardian 6000 V2 (opens in a new tab)
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