Dabbsson DBS3500
#14 in Home backupFull review
For homeowners building a whole-circuit backup system who want 3.4 kWh now, fast solar charging and a path to 240V. It is too heavy to treat as a camping unit.
Amazon $2,537.88 Dabbsson $1,599$1,599
The Dabbsson DBS3500 is the better portable power station overall, rated 3.8 to 3.6. The Dabbsson DBS3500 leads on value, features and portability. The Dabbsson DBS3500 costs $300 less ($1,599 vs $1,899).
ALLPOWERS R4000
#24 in Home backupFull review
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 $1,899$1,899
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 DBS3500 for value ($0.47 per rated Wh vs $0.55 per rated Wh), features (UPS (15 ms), expandable, 100 W USB-C, app vs UPS, 100 W USB-C, app) and portability (84 Wh per kg (90.5 lb (41 kg)) vs 77 Wh per kg (99.2 lb (45 kg))).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every home backup portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dabbsson DBS3500 | ALLPOWERS R4000 |
|---|---|---|
| Overall rating | 3.8/5 | 3.6/5 |
| Value 25% | 74 $0.47 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% | 100 Semi-solid-state LiFePO4, 4,500 cycles, 5-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 37 3,600 W continuous AC | 37 3,600 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 63 0-100% on AC in 2 h |
| Portability 10% | 70 84 Wh per kg (90.5 lb (41 kg)) | 58 77 Wh per kg (99.2 lb (45 kg)) |
| Solar input 5% | 65 2,400 W max solar input | 50 2,000 W max solar input |
| Features 5% | 100 UPS (15 ms), expandable, 100 W USB-C, app | 75 UPS, 100 W USB-C, app |
Specifications
| Dabbsson DBS3500 | ALLPOWERS R4000 | |
|---|---|---|
| Battery | ||
| Rated capacity | 3,430 Wh | 3,456 Wh |
| Chemistry | Semi-solid-state LiFePO4 | LiFePO4 |
| Cycle life | 4,500 to 80% | 3,500 to 80% |
| Expandable | Yes, up to 14,070 Wh | - |
| Output | ||
| AC output | 3,600 W (7,200 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 | 3 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 3 | 4 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | - |
| UPS / pass-through | Yes (15 ms switchover) | Yes |
| Charging | ||
| AC charging | 1,800 W | 2,000 W |
| Full AC charge time | - | 2 h (single high-voltage AC input; up to 3,000W combined AC and solar) |
| Max solar input | 2,400 W | 2,000 W |
| Solar input voltage | 12-150V, 25A max (AC + solar combined up to 3400W) | 12-150V MPPT, 40A |
| Build | ||
| Weight | 90.5 lb (41 kg) | 99.2 lb (45 kg) |
| Dimensions | 20.9 x 12 x 15.4 in | 21.25 x 19.29 x 11.81 in |
| App | Dabbsson app | ALLPOWERS app (Wi-Fi/Bluetooth) |
| Warranty | 5 years | 5 years |