Dabbsson 2000L
#1 in LargeFull review
For budget buyers who want 2 kWh of tested, efficient capacity and can tolerate slow recharging.
Amazon $648 Dabbsson $649$648
The Dabbsson 2000L is the better portable power station overall, rated 4.3 to 4.1. The Dabbsson 2000L leads on portability. The OUPES Mega 2 Pro wins on AC output, features and solar input. The Dabbsson 2000L costs $51 less ($648 vs $699).
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
Prices were last checked October 20, 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 2000L for portability (110 Wh per kg (41 lb (18.6 kg)) vs 93 Wh per kg (48.8 lb (22.1 kg))).
- Choose the OUPES Mega 2 Pro for AC output (2,500 W continuous AC vs 2,200 W continuous AC), features (UPS (20 ms), expandable, 140 W USB-C, app vs UPS (15 ms), 100 W USB-C, app) and solar input (1,000 W max solar input vs 800 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 | Dabbsson 2000L | OUPES Mega 2 Pro |
|---|---|---|
| Overall rating | 4.3/5 | 4.1/5 |
| Value 25% | 97 $0.32 per rated Wh | 94 $0.34 per rated Wh |
| Tested capacity 15% | 97 91% of rated capacity delivered (1 test) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 100 Semi-solid-state LiFePO4, 4,000 cycles, 5-year warranty | 100 LiFePO4, 4,000 cycles, 5-year warranty |
| AC output 15% | 44 2,200 W continuous AC | 58 2,500 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% | 100 110 Wh per kg (41 lb (18.6 kg)) | 87 93 Wh per kg (48.8 lb (22.1 kg)) |
| Solar input 5% | 28 800 W max solar input | 40 1,000 W max solar input |
| Features 5% | 75 UPS (15 ms), 100 W USB-C, app | 100 UPS (20 ms), expandable, 140 W USB-C, app |
Independent capacity tests
Dabbsson 2000L
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| CNET | 1,870 Wh | 91.3% | 480W load logged with HOBOware; round-trip efficiency 79.01%; recharge 3 h 28 min; ran a test fridge about 21 h |
OUPES Mega 2 Pro
No independent test published yet.
Specifications
| Dabbsson 2000L | OUPES Mega 2 Pro | |
|---|---|---|
| Battery | ||
| Rated capacity | 2,048 Wh | 2,048 Wh |
| Tested usable capacity | 1,870 Wh (91%) | - |
| Chemistry | Semi-solid-state LiFePO4 | LiFePO4 |
| Cycle life | 4,000 to 80% | 4,000 4000+ cycles to 80% |
| Expandable | No | Yes, up to 10,240 Wh |
| Output | ||
| AC output | 2,200 W (4,400 W surge) | 2,500 W |
| Boost mode (resistive loads) | 3,300 W | 3,600 W |
| AC outlets | 6 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 3 | 4 |
| 120V 2-prong outlets (NEMA 1-15R) | 3 | - |
| RV 30A outlet (TT-30R) | - | 1 |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 140 W each) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 1 | 0 |
| UPS / pass-through | Yes (15 ms switchover) | Yes (20 ms switchover) |
| Charging | ||
| AC charging | 1,500 W | 1,800 W |
| Max solar input | 800 W | 1,000 W |
| Solar input voltage | 12-60V, 20A | 12-80V (MPPT 18-80V, 30A) |
| Build | ||
| Weight | 41 lb (18.6 kg) | 48.8 lb (22.1 kg) |
| Dimensions | 18.3 x 11.2 x 8.8 in | 18.8 x 11.6 x 11.6 in |
| App | Wi-Fi + Bluetooth | OUPES app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |