The Growatt HELIOS 3600 is the better portable power station overall, rated 3.9 to 3.1. The Growatt HELIOS 3600 leads on value and portability. The Goal Zero Yeti PRO 4000 wins on charging speed and solar input. The Growatt HELIOS 3600 costs $2,800.97 less ($1,198.98 vs $3,999.95).
A 3.7 kWh home backup station for buyers who want 240V from one unit and the option to grow toward whole-home backup. At the Amazon price it is one of the cheaper ways to get that much LiFePO4 capacity.
Amazon $1,198.98For RV owners and home-backup buyers who want a rugged 4 kWh station with a 30A RV outlet and room to expand, and who won’t be lifting it often.
Amazon Goal Zero $3,999.95Prices were last checked October 24, 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 home backup portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | Growatt HELIOS 3600 | Goal Zero Yeti PRO 4000 |
|---|---|---|
| Overall rating | 3.9/5 | 3.1/5 |
| Value 25% | 96 $0.33 per rated Wh | 0 $1.00 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 | 100 LiFePO4, 4,000 cycles, 5-year warranty |
| AC output 15% | 37 3,600 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 32 0-100% on AC in 3 h | 44 0-100% on AC in 2 h 36 min |
| Portability 10% | 67 82 Wh per kg (99 lb (45 kg)) | 56 76 Wh per kg (115.7 lb (52.5 kg)) |
| Solar input 5% | 46 2,000 W max solar input | 71 3,000 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 100 W USB-C, app | 100 UPS (15 ms), expandable, 100 W USB-C, app |
| Growatt HELIOS 3600 | Goal Zero Yeti PRO 4000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,686 Wh | 3,993.6 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 4000+ cycles; end-of-life capacity not stated | 4,000 to 80% |
| Expandable | Yes | Yes, up to 19,968 Wh |
| Output | ||
| AC output | 3,600 W | 3,600 W (7,200 W surge) |
| Boost mode (resistive loads) | 4,500 W | - |
| AC outlets | 6 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| 240V 20A outlet (NEMA 6-20R) | 1 | - |
| AC waveform | - | Pure sine wave |
| USB-C ports | 4 (up to 100 W each) | 3 (up to 100 W each) |
| USB-A ports | 2 | 3 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 0 |
| UPS / pass-through | Yes (20 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Full AC charge time | 3 h (About 3 h from 120V at 1800W, or 1.5 h from 240V at 3600W (manufacturer)) | 2 h 36 min (2.6 h full per Goal Zero comparison chart (user guide says about 3 h); 0-80% in 2 h) |
| Max solar input | 2,000 W | 3,000 W |
| Solar input voltage | 12-60V | HPP 13.3-150V (3000W) + 8mm 12.3-28V (275W) |
| Car charging | 96 W | - |
| Build | ||
| Weight | 99 lb (45 kg) | 115.7 lb (52.5 kg) |
| Dimensions | 20.4 x 12.3 x 16.5 in | 21.4 x 13.8 x 14.8 in (with removable cart: 18.1 in tall, 125.7 lb) |
| App | myGro app (Wi-Fi and Bluetooth) | Goal Zero Power app |
| Warranty | 5 years | 5 years |
| Released | 2024-09 | 2023-10 |
