Bluetti AC500 vs Bluetti AC2A
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 AC2A costs $1800 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti AC500 holds 1406% more energy (3072Wh vs 204Wh), so it runs the same load proportionally longer.
- Bluetti AC500 has 9400W more surge headroom (10000W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC2A is 58.2 lb lighter (7.9 lb vs 66.1 lb).
- Bluetti AC500 is rated for 3,500 cycles vs 3,000 — meaningful if you cycle it daily.
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 AC2A
One of the cheapest LiFePO4 stations on the market. 204Wh is tiny, but a 200W solar input that outpaces the capacity makes it a surprisingly capable little off-grid trickle unit.
Best for: Ultralight campers who recharge from a panel daily.
Where it falls short:
- 204Wh is genuinely small
- 300W output is device-only
| Spec | Bluetti AC500 | Bluetti AC2A |
|---|---|---|
| Price | $1999 | $199 |
| Capacity | 3072 Wh | 204 Wh |
| Continuous output | 5000 W | 300 W |
| Surge output | 10000 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 | 3,000 |
| Weight (lighter wins) | 66.1 lb | 7.9 lb |
| Max solar | 3000 W | 200 W |
| Recharge time (faster wins) | 1h 45m | 1h 30m |
Runtime head-to-head
| Appliance | Bluetti AC500 | Bluetti AC2A |
|---|---|---|
| Refrigerator | 43.5 hrs | ❌ |
| Mini fridge | 82.9 hrs | 5.5 hrs |
| Chest freezer | 32.6 hrs | ❌ |
| CPAP machine | 65.3 hrs | 4.3 hrs |
| Sump pump | 3.3 hrs | ❌ |