ALLPOWERS S2000 Pro
#15 in Mid-sizeFull review
For buyers who want the most output for the money and will use it occasionally. Anyone planning daily cycling or full-power home backup should choose a LiFePO4 unit.
Amazon $559 ALLPOWERS $664$559
The ALLPOWERS S2000 Pro and the ALLPOWERS R1500 are evenly matched, rated 4.1 and 4.1. The ALLPOWERS S2000 Pro leads on portability, value and AC output. The ALLPOWERS R1500 wins on battery life and features. The ALLPOWERS R1500 costs $20 less ($539 vs $559).
ALLPOWERS R1500
#18 in Mid-sizeFull review
A low-cost expandable LiFePO4 station for home backup at moderate loads. Testing suggests it struggles near its rated 1,800W, so keep heavy loads well below that.
ALLPOWERS $539$539
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 ALLPOWERS S2000 Pro for portability (112 Wh per kg (28.7 lb (13 kg)) vs 69 Wh per kg (36.8 lb (16.7 kg))), value ($0.39 per rated Wh vs $0.47 per rated Wh) and AC output (2,400 W continuous AC vs 1,800 W continuous AC).
- Choose the ALLPOWERS R1500 for battery life (LiFePO4, 3,500 cycles, 5-year warranty vs NMC (ternary lithium), 2,500 cycles, 5-year warranty) and features (UPS (15 ms), expandable, 100 W USB-C, app vs UPS, 100 W USB-C, app).
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 | ALLPOWERS S2000 Pro | ALLPOWERS R1500 |
|---|---|---|
| Overall rating | 4.1/5 | 4.1/5 |
| Value 25% | 95 $0.39 per rated Wh | 84 $0.47 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 59 83% of rated capacity delivered (1 test) |
| Battery life 15% | 47 NMC (ternary lithium), 2,500 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 100 2,400 W continuous AC | 82 1,800 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% | 100 112 Wh per kg (28.7 lb (13 kg)) | 44 69 Wh per kg (36.8 lb (16.7 kg)) |
| Solar input 5% | 63 1,000 W max solar input | 49 650 W max solar input |
| Features 5% | 75 UPS, 100 W USB-C, app | 100 UPS (15 ms), expandable, 100 W USB-C, app |
Independent capacity tests
ALLPOWERS S2000 Pro
No independent test published yet.
ALLPOWERS R1500
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| The Solar Lab | - | 83% | Re-test at a 1,326W AC load ran 43.5 minutes, about 83% of rated capacity. A first run at 1,560W overheated and shut down after 25 minutes. |
Specifications
| ALLPOWERS S2000 Pro | ALLPOWERS R1500 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,451 Wh | 1,152 Wh |
| Tested usable capacity | - | 956 Wh (83%) |
| Chemistry | NMC (ternary lithium) | LiFePO4 |
| Cycle life | 2,500 to 80% | 3,500 3,500+ cycles (manufacturer; end-of-life capacity not stated) |
| Expandable | No | Yes, up to 4,608 Wh |
| Output | ||
| AC output | 2,400 W (4,000 W surge) | 1,800 W (3,000 W surge) |
| AC outlets | 4 total | 4 total |
| 120V 15A outlets (NEMA 5-15R) | 4 | - |
| 120V 20A outlets (NEMA 5-20R) | - | 4 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 4 | 2 |
| 12 V car outlet | Yes | Yes |
| UPS / pass-through | Yes | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,500 W | 1,500 W |
| Max solar input | 1,000 W | 650 W |
| Solar input voltage | 12-150V, 13A | 12-60V, 13A |
| Build | ||
| Weight | 28.7 lb (13 kg) | 36.8 lb (16.7 kg) |
| Dimensions | 14.76 x 9.64 x 9.84 in | 16.25 x 12.28 x 10.43 in |
| App | ALLPOWERS app (Bluetooth) | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |