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 $664The ALLPOWERS S2000 Pro rates 4.1 among mid-size portable power stations; the ALLPOWERS R2500 V2 rates 4.0 among large ones. The ALLPOWERS S2000 Pro costs $81 less ($559 vs $640).

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 $640Prices 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.
Scores side by side
These two sit in different size classes (mid-size and large), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | ALLPOWERS S2000 Pro | ALLPOWERS R2500 V2 |
|---|---|---|
| Overall rating | 4.1/5 | 4.0/5 |
| Value 25% | 95 $0.39 per rated Wh | 95 $0.33 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% | 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 | 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% | 100 112 Wh per kg (28.7 lb (13 kg)) | 39 66 Wh per kg (63.9 lb (29 kg)) |
| Solar input 5% | 63 1,000 W max solar input | 44 1,000 W max solar input |
| Features 5% | 75 UPS, 100 W USB-C, app | 75 UPS (15 ms), 100 W USB-C, app |
Specifications
| ALLPOWERS S2000 Pro | ALLPOWERS R2500 V2 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,451 Wh | 1,920 Wh |
| Chemistry | NMC (ternary lithium) | LiFePO4 |
| Cycle life | 2,500 to 80% | 3,500 to 80% (Amazon listing) |
| Expandable | No | No |
| Output | ||
| AC output | 2,400 W (4,000 W surge) | 2,500 W (4,000 W surge) |
| AC outlets | 4 total | 5 total |
| 120V 15A outlets (NEMA 5-15R) | 4 | - |
| 120V 20A outlets (NEMA 5-20R) | - | 4 |
| RV 30A outlet (TT-30R) | - | 1 |
| 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 | 4 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | - | 2 |
| UPS / pass-through | Yes | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 1,500 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 | 12-150V, 13A | 12-150V, 20A |
| Build | ||
| Weight | 28.7 lb (13 kg) | 63.9 lb (29 kg) |
| Dimensions | 14.76 x 9.64 x 9.84 in | 17.95 x 14.17 x 13.62 in |
| App | ALLPOWERS app (Bluetooth) | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |