The Growatt INFINITY 2000 PRO is the better portable power station overall, rated 4.2 to 3.8. The Growatt INFINITY 2000 PRO leads on value, battery life and solar input. The EcoFlow DELTA 3 Max wins on portability. The Growatt INFINITY 2000 PRO costs $251 less ($648 vs $899).
A low-cost 2 kWh LiFePO4 station for RV owners and home backup buyers who want a TT-30 outlet and room to expand. Buy it for the price per watt-hour rather than portability.
Amazon $648 Growatt $799For buyers who want 2 kWh of fast-charging backup at a mid-range price and do not need heavy solar input.
Amazon $899 EcoFlow $899Prices 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.
Each factor is scored 0-100 against the same fixed reference points for every large portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | Growatt INFINITY 2000 PRO | EcoFlow DELTA 3 Max |
|---|---|---|
| Overall rating | 4.2/5 | 3.8/5 |
| Value 25% | 97 $0.32 per rated Wh | 79 $0.44 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% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 70 LiFePO4, 5-year warranty |
| AC output 15% | 54 2,400 W continuous AC | 54 2,400 W continuous AC |
| Charging speed 10% | 76 0-100% on AC in 1 h 36 min | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 80 89 Wh per kg (51 lb (23 kg)) | 100 101 Wh per kg (44.8 lb (20.3 kg)) |
| Solar input 5% | 51 1,200 W max solar input | 11 500 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 100 W USB-C, app | 75 UPS (10 ms), 100 W USB-C, app |
| Growatt INFINITY 2000 PRO | EcoFlow DELTA 3 Max | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,048 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80% | - |
| Expandable | Yes, up to 6,144 Wh | - |
| Output | ||
| AC output | 2,400 W (4,800 W surge) | 2,400 W (4,800 W surge) |
| Boost mode (resistive loads) | 3,400 W | 3,400 W |
| AC outlets | 5 total | 4 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | - |
| USB-C ports | 2 (up to 100 W each) | 3 (up to 100 W each) |
| USB-A ports | 4 | 1 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | - |
| UPS / pass-through | Yes (20 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | 1 h 36 min (Spec table: 1.6 h to 100%; the feature list says 2 h (manufacturer)) | - |
| Max solar input | 1,200 W | 500 W |
| Solar input voltage | 12-60V | - |
| Build | ||
| Weight | 51 lb (23 kg) | 44.8 lb (20.3 kg) |
| Dimensions | 17.99 x 9.72 x 12.20 in | 494 x 239 x 305 mm |
| App | MyGro app (Wi-Fi and Bluetooth) | Wi-Fi + Bluetooth |
| Warranty | 5 years | 5 years |
