EcoFlow DELTA Pro Ultra
#13 in Home backupFull review
A modular 6kWh home-backup system for buyers who need 240V output and plan to expand. Overkill for camping or short outages.
Amazon $4,199 EcoFlow $4,199$4,199
The EcoFlow DELTA Pro Ultra is the better portable power station overall, rated 3.8 to 3.2. The EcoFlow DELTA Pro Ultra leads on value, AC output and battery life. The Zendure SuperBase V4600 wins on portability. The EcoFlow DELTA Pro Ultra costs $100 less ($4,199 vs $4,299).
Zendure SuperBase V4600
#27 in Home backupFull review
For home backup buyers who want 240V output and room to grow past 20 kWh from one wheeled unit.
Zendure $5,998 HVACDirect $4,299$4,299
Prices were last checked October 20, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EcoFlow DELTA Pro Ultra for value ($0.68 per rated Wh vs $0.93 per rated Wh), AC output (7,200 W continuous AC vs 3,800 W continuous AC) and battery life (LiFePO4, 3,500 cycles, 5-year warranty vs LiFePO4, 6,000 cycles).
- Choose the Zendure SuperBase V4600 for portability (84 Wh per kg (121 lb (55 kg)) vs 75 Wh per kg (181.8 lb (82.4 kg))).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every home backup portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow DELTA Pro Ultra | Zendure SuperBase V4600 |
|---|---|---|
| Overall rating | 3.8/5 | 3.2/5 |
| Value 25% | 41 $0.68 per rated Wh | 3 $0.93 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 96 LiFePO4, 3,500 cycles, 5-year warranty | 85 LiFePO4, 6,000 cycles |
| AC output 15% | 100 7,200 W continuous AC | 42 3,800 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 63 0-100% on AC in 2 h |
| Portability 10% | 54 75 Wh per kg (181.8 lb (82.4 kg)) | 71 84 Wh per kg (121 lb (55 kg)) |
| Solar input 5% | 90 5,600 W max solar input | 59 3,000 W max solar input |
| Features 5% | 100 UPS (0 ms), expandable, 100 W USB-C, app | 100 UPS (13 ms), expandable, 100 W USB-C, app |
Specifications
| EcoFlow DELTA Pro Ultra | Zendure SuperBase V4600 | |
|---|---|---|
| Battery | ||
| Rated capacity | 6,144 Wh | 4,608 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,500 to 80% | 6,000 6,000+ cycles (manufacturer; end-of-life capacity not stated) |
| Expandable | Yes, up to 30,000 Wh | Yes, up to 23,040 Wh |
| Output | ||
| AC output | 7,200 W (10,800 W surge) | 3,800 W |
| Boost mode (resistive loads) | - | 5,000 W |
| AC outlets | 6 total | 6 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| 120/240V 30A twist-lock (NEMA L14-30R) | 1 | - |
| 240V 20A outlet (NEMA 6-20R) | - | 1 |
| AC waveform | Pure sine wave, 120/240V split phase | - |
| USB-C ports | 2 (up to 100 W each) | 4 (up to 100 W each) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | - | Yes |
| DC5521 ports | - | 2 |
| UPS / pass-through | Yes (0 ms switchover) | Yes (13 ms switchover) |
| Charging | ||
| AC charging | - | 3,600 W |
| Full AC charge time | - | 2 h (About 2 h at 3,600W from a 240V outlet; 1,800W max from a 120V outlet. Up to 4,608W combined with solar) |
| Max solar input | 5,600 W | 3,000 W |
| Solar input voltage | High-voltage 80-450V (4000W) and low-voltage 30-150V (1600W) | 12-150V, 25A (1 MPPT, XT90) |
| Build | ||
| Weight | 181.8 lb (82.4 kg) | 121 lb (55 kg) |
| Dimensions | Inverter 27.2 x 18.9 x 8.4 in; battery 26 x 18 x 8 in | 28.7 x 13.6 x 17.4 in |
| App | EcoFlow app (Bluetooth, Wi-Fi and 4G) | Zendure app (Wi-Fi, Bluetooth) |
| Warranty | 5 years | - |