Bluetti AC70 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 AC70 costs $1500 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti AC500 holds 300% more energy (3072Wh vs 768Wh), so it runs the same load proportionally longer.
- Bluetti AC500 has 8000W more surge headroom (10000W vs 2000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC70 is 44.1 lb lighter (22 lb vs 66.1 lb).
- Bluetti AC500 is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
Bluetti AC70
768Wh with 1000W output at $499 — it does what the EcoFlow River 2 Pro does, with more output and more weight.
Best for: Campers who need to run a small fridge, not just charge devices.
Where it falls short:
- 22 lb — 5 lb heavier than the River 2 Pro
- 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 AC70 | Bluetti AC500 |
|---|---|---|
| Price | $499 | $1999 |
| Capacity | 768 Wh | 3072 Wh |
| Continuous output | 1000 W | 5000 W |
| Surge output | 2000 W | 10000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,500 |
| Weight (lighter wins) | 22 lb | 66.1 lb |
| Max solar | 500 W | 3000 W |
| Recharge time (faster wins) | 1h 15m | 1h 45m |
Runtime head-to-head
| Appliance | Bluetti AC70 | Bluetti AC500 |
|---|---|---|
| Refrigerator | 10.9 hrs | 43.5 hrs |
| Mini fridge | 20.7 hrs | 82.9 hrs |
| Chest freezer | 8.2 hrs | 32.6 hrs |
| CPAP machine | 16.3 hrs | 65.3 hrs |
| Sump pump | ❌ | 3.3 hrs |