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 $640The ALLPOWERS R2500 V2 rates 4.0 among large portable power stations; the ALLPOWERS R4000 rates 3.6 among home backup ones. The ALLPOWERS R2500 V2 costs $1,259 less ($640 vs $1,899).

A wheeled 3.5 kWh LiFePO4 station for RVs, food trucks and home backup at a lower price than the big brands. It is 120V only.
ALLPOWERS $1,899Prices 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.
Scores side by side
These two sit in different size classes (large and home backup), 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 R2500 V2 | ALLPOWERS R4000 |
|---|---|---|
| Overall rating | 4.0/5 | 3.6/5 |
| Value 25% | 95 $0.33 per rated Wh | 62 $0.55 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% | 96 LiFePO4, 3,500 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 58 2,500 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 79 0-100% on AC in 1 h 30 min | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 39 66 Wh per kg (63.9 lb (29 kg)) | 58 77 Wh per kg (99.2 lb (45 kg)) |
| Solar input 5% | 44 1,000 W max solar input | 50 2,000 W max solar input |
| Features 5% | 75 UPS (15 ms), 100 W USB-C, app | 75 UPS (15 ms), 100 W USB-C, app |
Specifications
| ALLPOWERS R2500 V2 | ALLPOWERS R4000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,920 Wh | 3,456 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,500 to 80% (Amazon listing) | 3,500 to 80% |
| Expandable | No | - |
| Output | ||
| AC output | 2,500 W (4,000 W surge) | 3,600 W (6,000 W surge) |
| AC outlets | 5 total | 5 total |
| 120V 20A outlets (NEMA 5-20R) | 4 | 4 |
| RV 30A outlet (TT-30R) | 1 | 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 | 0 |
| UPS / pass-through | Yes (15 ms switchover) | 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 | 2,000 W |
| Solar input voltage | 12-150V, 20A | 12-150V MPPT, 40A |
| Build | ||
| Weight | 63.9 lb (29 kg) | 99.2 lb (45 kg) |
| Dimensions | 17.95 x 14.17 x 13.62 in | 21.25 x 19.29 x 11.81 in |
| App | ALLPOWERS app (Wi-Fi/Bluetooth) | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |
| Released | 2026-10 | 2022-12 |