Bluetti AC500 vs Bluetti AC180P
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 AC180P costs $1300 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti AC500 holds 113% more energy (3072Wh vs 1440Wh), so it runs the same load proportionally longer.
- Bluetti AC500 has 7300W more surge headroom (10000W vs 2700W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC180P is 29.1 lb lighter (37 lb vs 66.1 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
Bluetti AC180P
A higher-capacity take on the AC180, adding 25% more watt-hours for the same 1,800W output — a useful step up if you catch it near the AC180's price.
Best for: Buyers who want more than 1kWh from a mainstream brand on sale.
Where it falls short:
- 37 lb
- 2,700W surge is mid-pack
- Not expandable
| Spec | Bluetti AC500 | Bluetti AC180P |
|---|---|---|
| Price | $1999 | $699 |
| Capacity | 3072 Wh | 1440 Wh |
| Continuous output | 5000 W | 1800 W |
| Surge output | 10000 W | 2700 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,500 |
| Weight (lighter wins) | 66.1 lb | 37 lb |
| Max solar | 3000 W | 500 W |
| Recharge time (faster wins) | 1h 45m | 1h 30m |
Runtime head-to-head
| Appliance | Bluetti AC500 | Bluetti AC180P |
|---|---|---|
| Refrigerator | 43.5 hrs | 20.4 hrs |
| Mini fridge | 82.9 hrs | 38.9 hrs |
| Chest freezer | 32.6 hrs | 15.3 hrs |
| CPAP machine | 65.3 hrs | 30.6 hrs |
| Sump pump | 3.3 hrs | ❌ |