Bluetti AC180 vs Bluetti AC500
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 AC180 costs $1200 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti AC500 holds 167% more energy (3072Wh vs 1152Wh), 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 AC180 is 28.7 lb lighter (37.4 lb vs 66.1 lb).
Bluetti AC180
A solid mid-size unit that competes on price rather than any standout spec. 1152Wh is a useful step above the 1kWh crowd.
Best for: Buyers who catch it on sale and want slightly more than 1kWh.
Where it falls short:
- 37.4 lb is heavy for its capacity
- 2700W surge is mid-pack
- Not expandable
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
| Spec | Bluetti AC180 | Bluetti AC500 |
|---|---|---|
| Price | $799 | $1999 |
| Capacity | 1152 Wh | 3072 Wh |
| Continuous output | 1800 W | 5000 W |
| Surge output | 2700 W | 10000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,500 |
| Weight (lighter wins) | 37.4 lb | 66.1 lb |
| Max solar | 500 W | 3000 W |
| Recharge time (faster wins) | 1h 30m | 1h 45m |
Runtime head-to-head
| Appliance | Bluetti AC180 | Bluetti AC500 |
|---|---|---|
| Refrigerator | 16.3 hrs | 43.5 hrs |
| Mini fridge | 31.1 hrs | 82.9 hrs |
| Chest freezer | 12.2 hrs | 32.6 hrs |
| CPAP machine | 24.5 hrs | 65.3 hrs |
| Sump pump | ❌ | 3.3 hrs |