Dabbsson 1000L
#2 in Mid-sizeFull review
For budget buyers who want 1 kWh of LiFePO4 storage for camping or short outages at a low price per watt-hour. The two AC outlets limit how many appliances it can run directly.
Amazon $386 Dabbsson $386$386
The Dabbsson 1000L is the better portable power station overall, rated 4.4 to 4.3. The Dabbsson 1000L leads on tested capacity and portability. The OUPES Mega 1 wins on AC output, features and solar input. The Dabbsson 1000L costs $60.49 less ($386 vs $446.49).
OUPES Mega 1
#9 in Mid-sizeFull review
A strong 1kWh home-backup station with a big inverter and room to expand, often sold well below list price on Amazon.
Amazon $446.49$446.49
Prices were last checked October 27, 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 Dabbsson 1000L for tested capacity (87% of rated capacity delivered (1 test) vs 79% of rated capacity delivered (1 test)) and portability (93 Wh per kg (24 lb (10.9 kg)) vs 81 Wh per kg (27.8 lb (12.6 kg))).
- Choose the OUPES Mega 1 for AC output (2,000 W continuous AC vs 1,200 W continuous AC), features (UPS (20 ms), expandable, 100 W USB-C, app vs UPS (15 ms), 100 W USB-C, app) and solar input (800 W max solar input vs 600 W max solar input).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every mid-size portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dabbsson 1000L | OUPES Mega 1 |
|---|---|---|
| Overall rating | 4.4/5 | 4.3/5 |
| Value 25% | 96 $0.38 per rated Wh | 89 $0.44 per rated Wh |
| Tested capacity 15% | 79 87% of rated capacity delivered (1 test) | 41 79% of rated capacity delivered (1 test) |
| Battery life 15% | 100 Semi-solid-state LiFePO4, 4,000 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 56 1,200 W continuous AC | 88 2,000 W continuous AC |
| Charging speed 10% | 88 0-100% on AC in 1 h 12 min | 96 0-100% on AC in 58 min |
| Portability 10% | 86 93 Wh per kg (24 lb (10.9 kg)) | 66 81 Wh per kg (27.8 lb (12.6 kg)) |
| Solar input 5% | 52 600 W max solar input | 74 800 W max solar input |
| Features 5% | 75 UPS (15 ms), 100 W USB-C, app | 100 UPS (20 ms), expandable, 100 W USB-C, app |
Independent capacity tests
Dabbsson 1000L
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| mybest | 880 Wh | 87.3% | Japanese-market 1000L (same 1,008 Wh rating) run on a halogen heater from full until 0%; mybest reports 87.3% conversion efficiency and 880 Wh real capacity. |
OUPES Mega 1
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 79% | 1,779W appliance load ran for 27 minutes. |
Specifications
| Dabbsson 1000L | OUPES Mega 1 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,008 Wh | 1,024 Wh |
| Tested usable capacity | 880 Wh (87%) | 809 Wh (79%) |
| Chemistry | Semi-solid-state LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80% | 3,500 to 80% |
| Expandable | No | Yes, up to 5,120 Wh |
| Output | ||
| AC output | 1,200 W (2,400 W surge) | 2,000 W (4,500 W surge) |
| Boost mode (resistive loads) | 1,800 W | - |
| AC outlets | 2 total | 4 total |
| 120V 15A outlets (NEMA 5-15R) | 2 | - |
| 120V 20A outlets (NEMA 5-20R) | - | 4 |
| AC waveform | Pure sine wave | - |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 4 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 1 | 2 |
| UPS / pass-through | Yes (15 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,000 W | 1,400 W |
| Full AC charge time | 1 h 12 min (manufacturer: 0-80% in 50 min; full-charge time not published) | 58 min (OUPES: full in 36 min with AC plus solar (2200W). The Amazon listing says 36 min to 80%. AC-only time not published) |
| Max solar input | 600 W | 800 W |
| Solar input voltage | 12-60V, 21A max (AC + solar combined up to 1400W) | 12-78V (MPPT 18-75V, 14A) |
| Car charging | 200 W | 96 W |
| Build | ||
| Weight | 24 lb (10.9 kg) | 27.8 lb (12.6 kg) |
| Dimensions | 15.3 x 7.4 x 9.4 in | 15.1 x 9.1 x 11.6 in |
| App | Dabbsson app | OUPES app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2025-06 | 2025-07 |