OUPES Mega 2 Pro
#6 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 4.0. The OUPES Mega 2 Pro leads on portability and features. The ALLPOWERS R2500 V2 costs $49 less ($650 vs $699).
ALLPOWERS R2500 V2
#15 in LargeFull review
A budget 2 kWh LiFePO4 station for home backup and RV use, for buyers who put price first and can lift a 64 lb box.
Amazon $650$650
Prices were last checked October 30, 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 portability (93 Wh per kg (48.8 lb (22.1 kg)) vs 66 Wh per kg (63.9 lb (29 kg))) and features (UPS (20 ms), expandable, 140 W USB-C, app vs UPS (15 ms), 100 W USB-C, app).
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 | ALLPOWERS R2500 V2 |
|---|---|---|
| Overall rating | 4.1/5 | 4.0/5 |
| Value 25% | 94 $0.34 per rated Wh | 94 $0.34 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 | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 58 2,500 W continuous AC | 58 2,500 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 79 0-100% on AC in 1 h 30 min |
| Portability 10% | 87 93 Wh per kg (48.8 lb (22.1 kg)) | 39 66 Wh per kg (63.9 lb (29 kg)) |
| Solar input 5% | 40 1,000 W max solar input | 44 1,000 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 140 W USB-C, app | 75 UPS (15 ms), 100 W USB-C, app |
Specifications
| OUPES Mega 2 Pro | ALLPOWERS R2500 V2 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 1,920 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 4000+ cycles to 80% | 3,500 to 80% (Amazon listing) |
| Expandable | Yes, up to 10,240 Wh | No |
| Output | ||
| AC output | 2,500 W | 2,500 W (4,000 W surge) |
| Boost mode (resistive loads) | 3,600 W | - |
| AC outlets | 5 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 1 |
| AC waveform | - | Pure sine wave |
| USB-C ports | 2 (up to 140 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 4 |
| 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 | 1,500 W |
| Full AC charge time | - | 1 h 30 min (about 1.5 h; manufacturer says about 97 minutes in its own test) |
| Max solar input | 1,000 W | 1,000 W |
| Solar input voltage | 12-80V (MPPT 18-80V, 30A) | 12-150V, 20A |
| Car charging | 96 W | - |
| Build | ||
| Weight | 48.8 lb (22.1 kg) | 63.9 lb (29 kg) |
| Dimensions | 18.8 x 11.6 x 11.6 in | 17.95 x 14.17 x 13.62 in |
| App | OUPES app (Wi-Fi/Bluetooth) | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2026-06 | 2026-10 |