Allpowers R4000 vs Allpowers R1500
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Allpowers R1500 costs $1600 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 200% more energy (3456Wh vs 1152Wh), so it runs the same load proportionally longer.
- Allpowers R4000 has 3000W more surge headroom (6000W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Allpowers R1500 is 68.5 lb lighter (37.5 lb vs 106 lb).
Allpowers R4000
A large expandable unit that undercuts the EcoFlow Delta Pro 3 on price while matching its 4,000W output — the trade is a less established support network.
Best for: Whole-home backup buyers prioritising price per watt over brand.
Where it falls short:
- 106 lb
- Brand support and resale trail the big names
Allpowers R1500
A well-priced 1.1kWh with a real 1,800W output and fast charging, a common budget pick for home backup starter kits.
Best for: First-time backup buyers who want 1,800W output cheap.
Where it falls short:
- 37.5 lb for 1.1kWh
- Not expandable
| Spec | Allpowers R4000 | Allpowers R1500 |
|---|---|---|
| Price | $2299 | $699 |
| Capacity | 3456 Wh | 1152 Wh |
| Continuous output | 4000 W | 1800 W |
| Surge output | 6000 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,500 |
| Weight (lighter wins) | 106 lb | 37.5 lb |
| Max solar | 2000 W | 700 W |
| Recharge time (faster wins) | 1h 30m | 1h 20m |
Runtime head-to-head
| Appliance | Allpowers R4000 | Allpowers R1500 |
|---|---|---|
| Refrigerator | 49.0 hrs | 16.3 hrs |
| Mini fridge | 93.3 hrs | 31.1 hrs |
| Chest freezer | 36.7 hrs | 12.2 hrs |
| CPAP machine | 73.4 hrs | 24.5 hrs |
| Sump pump | 3.7 hrs | ❌ |