OUPES Mega 2 Pro
#8 in LargeFull review
A 2kWh LiFePO4 station with an RV outlet and large expansion for home backup and RV owners on a budget.
OUPES $699$699
The OUPES Mega 2 Pro is the better portable power station overall, rated 4.1 to 4.1. The OUPES Mega 2 Pro leads on AC output and solar input. The OUPES Mega 2 Pro costs $200 less ($699 vs $899).
Dabbsson DBS2300
#13 in LargeFull review
For home-backup buyers who want 2.3 kWh of tested capacity that can grow to 8.3 kWh. The DBS2300 Plus costs the same and adds more solar input and parallel output.
Amazon $1,399 Dabbsson $899$899
Prices 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.
Which should you buy?
- Choose the OUPES Mega 2 Pro for AC output (2,500 W continuous AC vs 2,200 W continuous AC) and solar input (1,000 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 large portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | OUPES Mega 2 Pro | Dabbsson DBS2300 |
|---|---|---|
| Overall rating | 4.1/5 | 4.1/5 |
| Value 25% | 94 $0.34 per rated Wh | 87 $0.39 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 67 85% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 100 Semi-solid-state LiFePO4, 4,500 cycles, 5-year warranty |
| AC output 15% | 58 2,500 W continuous AC | 44 2,200 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 87 93 Wh per kg (48.8 lb (22.1 kg)) | 94 97 Wh per kg (53 lb (24.1 kg)) |
| Solar input 5% | 40 1,000 W max solar input | 13 600 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 140 W USB-C, app | 100 UPS (15 ms), expandable, 100 W USB-C, app |
Independent capacity tests
OUPES Mega 2 Pro
No independent test published yet.
Dabbsson DBS2300
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| nextpit | 1,973 Wh | 84.7% | Full 100%-to-0% discharge (load not stated) of the European 230V model; 2,447 Wh from the wall to recharge, about 81% round trip. 1973/2330 works out to 84.7%. |
Specifications
| OUPES Mega 2 Pro | Dabbsson DBS2300 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,330 Wh |
| Tested usable capacity | - | 1,973 Wh (85%) |
| Chemistry | LiFePO4 | Semi-solid-state LiFePO4 |
| Cycle life | 4,000 4000+ cycles to 80% | 4,500 to 80% |
| Expandable | Yes, up to 10,240 Wh | Yes, up to 8,330 Wh |
| Output | ||
| AC output | 2,500 W | 2,200 W (4,400 W surge) |
| Boost mode (resistive loads) | 3,600 W | 3,000 W |
| AC outlets | 5 total | 4 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | - |
| AC waveform | - | Pure sine wave |
| USB-C ports | 2 (up to 140 W each) | 3 (up to 100 W each) |
| USB-A ports | 2 | 3 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | 2 |
| UPS / pass-through | Yes (20 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,800 W |
| Max solar input | 1,000 W | 600 W |
| Solar input voltage | 12-80V (MPPT 18-80V, 30A) | 12-60V, 12A max (AC + solar combined up to 1800W) |
| Car charging | 96 W | - |
| Build | ||
| Weight | 48.8 lb (22.1 kg) | 53 lb (24.1 kg) |
| Dimensions | 18.8 x 11.6 x 11.6 in | 17 x 10 x 11.9 in |
| App | OUPES app (Wi-Fi/Bluetooth) | Dabbsson app |
| Warranty | 5 years | 5 years |
| Released | 2026-06 | 2023-05 |