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 and the Anker SOLIX S2000 are evenly matched, rated 4.1 and 4.1. The OUPES Mega 2 Pro leads on AC output, solar input and features. The Anker SOLIX S2000 wins on portability.
Anker SOLIX S2000
#12 in LargeFull review
For home backup of a fridge, router and small appliances where a compact, long-lived battery matters more than high output or solar charging speed.
Amazon $699.99 Anker SOLIX $699.99$699.99
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 1,500 W continuous AC), solar input (1,000 W max solar input vs 400 W max solar input) and features (UPS (20 ms), expandable, 140 W USB-C, app vs UPS (10 ms), 100 W USB-C, app).
- Choose the Anker SOLIX S2000 for portability (124 Wh per kg (35.7 lb (16.2 kg)) vs 93 Wh per kg (48.8 lb (22.1 kg))).
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 | Anker SOLIX S2000 |
|---|---|---|
| Overall rating | 4.1/5 | 4.1/5 |
| Value 25% | 94 $0.34 per rated Wh | 93 $0.35 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 95 91% 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% | 58 2,500 W continuous AC | 0 1,500 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 70 0-100% on AC in 1 h 47 min |
| Portability 10% | 87 93 Wh per kg (48.8 lb (22.1 kg)) | 100 124 Wh per kg (35.7 lb (16.2 kg)) |
| Solar input 5% | 40 1,000 W max solar input | 6 400 W max solar input |
| Features 5% | 100 UPS (20 ms), expandable, 140 W USB-C, app | 75 UPS (10 ms), 100 W USB-C, app |
Independent capacity tests
OUPES Mega 2 Pro
No independent test published yet.
Anker SOLIX S2000
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 91% | Efficiency test; load not specified in the review. Measured AC recharge 1 h 47 min. |
Specifications
| OUPES Mega 2 Pro | Anker SOLIX S2000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,010 Wh |
| Tested usable capacity | - | 1,829 Wh (91%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 4,000 4000+ cycles to 80% | 6,000 to 80% (10,000 to 60%) |
| Expandable | Yes, up to 10,240 Wh | No |
| Output | ||
| AC output | 2,500 W | 1,500 W (3,000 W surge) |
| Boost mode (resistive loads) | 3,600 W | - |
| AC outlets | 5 total | 5 total |
| 120V 15A outlets (NEMA 5-15R) | - | 5 |
| 120V 20A outlets (NEMA 5-20R) | 4 | - |
| RV 30A outlet (TT-30R) | 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 | 1 |
| 12 V car outlet | Yes | No |
| DC5521 ports | 0 | 0 |
| UPS / pass-through | Yes (20 ms switchover) | Yes (10 ms switchover) |
| Charging | ||
| AC charging | 1,800 W | 1,600 W |
| Full AC charge time | - | 1 h 47 min (measured by The Solar Lab; Anker states 2.3 h at the default 1,150W, UltraFast (1,600W) is enabled in the app) |
| Max solar input | 1,000 W | 400 W |
| Solar input voltage | 12-80V (MPPT 18-80V, 30A) | 11-60V |
| Car charging | 96 W | - |
| Build | ||
| Weight | 48.8 lb (22.1 kg) | 35.7 lb (16.2 kg) |
| Dimensions | 18.8 x 11.6 x 11.6 in | 8.2 x 11.1 x 12.7 in |
| App | OUPES app (Wi-Fi/Bluetooth) | Anker app |
| Warranty | 5 years | 5 years |
| Released | 2026-06 | 2026-05 |