The Growatt INFINITY 2000 PRO is the better portable power station overall, rated 4.2 to 3.7. The Growatt INFINITY 2000 PRO leads on value, battery life and solar input. The EcoFlow DELTA 3 Max Plus wins on AC output. The Growatt INFINITY 2000 PRO costs $551 less ($648 vs $1,199).
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 $799A 2kWh home-backup station with enough output for most household circuits and room to expand to 10 kWh. A good fit for buyers who want to start mid-size and grow later.
Amazon $1,199 EcoFlow $1,199Prices 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 Plus |
|---|---|---|
| Overall rating | 4.2/5 | 3.7/5 |
| Value 25% | 97 $0.32 per rated Wh | 56 $0.59 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 46 80% of rated capacity delivered (1 test) |
| 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 | 79 3,000 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)) | 87 93 Wh per kg (48.7 lb (22.1 kg)) |
| Solar input 5% | 51 1,200 W max solar input | 40 1,000 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 100 W USB-C, app | 100 UPS (10 ms), expandable, 140 W USB-C, app |
No independent test published yet.
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 1,640 Wh | 80% | Full 100%-to-0% AC discharge; load not specified. Recharge took 2.33 kWh from the wall. Measured UPS switchover: 8 ms. |
| Growatt INFINITY 2000 PRO | EcoFlow DELTA 3 Max Plus | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,048 Wh |
| Tested usable capacity | - | 1,640 Wh (80%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80% | - |
| Expandable | Yes, up to 6,144 Wh | Yes, up to 10,000 Wh |
| Output | ||
| AC output | 2,400 W (4,800 W surge) | 3,000 W (6,000 W surge) |
| Boost mode (resistive loads) | 3,400 W | 3,800 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 140 W each) |
| USB-A ports | 4 | 1 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 0 |
| 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 | 1,000 W |
| Solar input voltage | 12-60V | 11-60V, 18A max (2 XT60i inputs) |
| Build | ||
| Weight | 51 lb (23 kg) | 48.7 lb (22.1 kg) |
| Dimensions | 17.99 x 9.72 x 12.20 in | 19.4 x 9.5 x 12.0 in |
| App | MyGro app (Wi-Fi and Bluetooth) | EcoFlow app (Wi-Fi and Bluetooth) |
| Warranty | 5 years | 5 years |
