ALLPOWERS P1800
#17 in Mid-sizeFull review
For buyers who want a 1 kWh LiFePO4 station for camping or short outages at a low price, and can accept a less established brand with no independent testing yet.
Amazon $419 ALLPOWERS $439$419
The ALLPOWERS P1800 and the ALLPOWERS R1500 are evenly matched, rated 4.1 and 4.1. The ALLPOWERS P1800 leads on portability and solar input. The ALLPOWERS R1500 wins on features. The ALLPOWERS P1800 costs $120 less ($419 vs $539).
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 P1800 for portability (79 Wh per kg (28.7 lb (13 kg)) vs 69 Wh per kg (36.8 lb (16.7 kg))) and solar input (650 W max solar input vs 650 W max solar input).
- Choose the ALLPOWERS R1500 for features (UPS (15 ms), expandable, 100 W USB-C, app vs UPS (10 ms), 140 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 P1800 | ALLPOWERS R1500 |
|---|---|---|
| Overall rating | 4.1/5 | 4.1/5 |
| Value 25% | 92 $0.41 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% | 91 LiFePO4, 3,000 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 82 1,800 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% | 61 79 Wh per kg (28.7 lb (13 kg)) | 44 69 Wh per kg (36.8 lb (16.7 kg)) |
| Solar input 5% | 57 650 W max solar input | 49 650 W max solar input |
| Features 5% | 75 UPS (10 ms), 140 W USB-C, app | 100 UPS (15 ms), expandable, 100 W USB-C, app |
Independent capacity tests
ALLPOWERS P1800
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 P1800 | ALLPOWERS R1500 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,024 Wh | 1,152 Wh |
| Tested usable capacity | - | 956 Wh (83%) |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 70% (manufacturer spec table; the Amazon listing says 4,000+) | 3,500 3,500+ cycles (manufacturer; end-of-life capacity not stated) |
| Expandable | No | Yes, up to 4,608 Wh |
| Output | ||
| AC output | 1,800 W (3,600 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 |
| USB-C ports | 2 (up to 140 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| UPS / pass-through | Yes (10 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,200 W | 1,500 W |
| Max solar input | 650 W | 650 W |
| Solar input voltage | 11-60V, 13A (XT60) | 12-60V, 13A |
| Build | ||
| Weight | 28.7 lb (13 kg) | 36.8 lb (16.7 kg) |
| Dimensions | 14.7 x 8.2 x 11.7 in | 16.25 x 12.28 x 10.43 in |
| App | ALLPOWERS app (Wi-Fi/Bluetooth) | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |