The Growatt HELIOS 3600 is the better portable power station overall, rated 3.9 to 3.8. The Growatt HELIOS 3600 leads on AC output and features. The Mango Power E wins on charging speed. The Growatt HELIOS 3600 costs $100.02 less ($1,198.98 vs $1,299).
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 home backup buyers who want a large 3.5 kWh LFP battery at a low price per watt-hour and can live with its weight.
Mango Power $1,299Prices 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 | Mango Power E |
|---|---|---|
| Overall rating | 3.9/5 | 3.8/5 |
| Value 25% | 96 $0.33 per rated Wh | 90 $0.37 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 32 77% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 100 LiFePO4, 6,000 cycles, 5-year warranty |
| AC output 15% | 37 3,600 W continuous AC | 20 3,000 W continuous AC |
| Charging speed 10% | 32 0-100% on AC in 3 h | 79 0-100% on AC in 1 h 30 min |
| Portability 10% | 67 82 Wh per kg (99 lb (45 kg)) | 60 78 Wh per kg (100.1 lb (45.4 kg)) |
| Solar input 5% | 46 2,000 W max solar input | 49 2,000 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 100 W USB-C, app | 65 expandable, 100 W USB-C, app |
No independent test published yet.
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 2,720 Wh | 77% | Full discharge at a 350W load delivered 2.72 kWh of 3.53 kWh rated; recharge from empty drew 3.64 kWh |
| Growatt HELIOS 3600 | Mango Power E | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,686 Wh | 3,533 Wh |
| Tested usable capacity | - | 2,720 Wh (77%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 4000+ cycles; end-of-life capacity not stated | 6,000 to 70% (CATL LFP cells, at 25°C, 0.5C) |
| Expandable | Yes | Yes, up to 7,066 Wh |
| Output | ||
| AC output | 3,600 W | 3,000 W |
| 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 | - |
| USB-C ports | 4 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 6 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | 2 |
| UPS / pass-through | Yes (20 ms switchover) | - |
| Charging | ||
| AC charging | 1,800 W | 3,000 W |
| Full AC charge time | 3 h (About 3 h from 120V at 1800W, or 1.5 h from 240V at 3600W (manufacturer)) | 1 h 30 min (80% in 1 h, full in 1.5 h at 3,000W with the 30A fast-charging cable (sold separately); the included 15A cable charges at up to 1,800W) |
| Max solar input | 2,000 W | 2,000 W |
| Solar input voltage | 12-60V | 60-150V (1 MPPT) |
| Car charging | 96 W | - |
| Build | ||
| Weight | 99 lb (45 kg) | 100.1 lb (45.4 kg) |
| Dimensions | 20.4 x 12.3 x 16.5 in | 17.8 x 13.6 x 19.4 in |
| App | myGro app (Wi-Fi and Bluetooth) | Mango Power app (Wi-Fi, Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2024-09 | 2023-01 |
