Bluetti AC500 vs Allpowers R4000
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
Bluetti AC500 costs $300 less. Whether that gap is worth closing depends on what you need to run.
- Allpowers R4000 holds 13% more energy (3456Wh vs 3072Wh), so it runs the same load proportionally longer.
- Bluetti AC500 has 4000W more surge headroom (10000W vs 6000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC500 is 39.9 lb lighter (66.1 lb vs 106 lb).
Bluetti AC500
A modular home-backup system, not a portable unit — the AC500 has no internal battery at all until you add B300K packs.
Best for: Serious home-backup builds where you're designing a system, not buying an appliance.
Where it falls short:
- Requires separate battery packs to function at all — budget accordingly
- Total system cost climbs fast
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
| Spec | Bluetti AC500 | Allpowers R4000 |
|---|---|---|
| Price | $1999 | $2299 |
| Capacity | 3072 Wh | 3456 Wh |
| Continuous output | 5000 W | 4000 W |
| Surge output | 10000 W | 6000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,500 |
| Weight (lighter wins) | 66.1 lb | 106 lb |
| Max solar | 3000 W | 2000 W |
| Recharge time (faster wins) | 1h 45m | 1h 30m |
Runtime head-to-head
| Appliance | Bluetti AC500 | Allpowers R4000 |
|---|---|---|
| Refrigerator | 43.5 hrs | 49.0 hrs |
| Mini fridge | 82.9 hrs | 93.3 hrs |
| Chest freezer | 32.6 hrs | 36.7 hrs |
| CPAP machine | 65.3 hrs | 73.4 hrs |
| Sump pump | 3.3 hrs | 3.7 hrs |