Bluetti EB3A vs Anker 521 PowerHouse
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 EB3A costs $10 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti EB3A holds 5% more energy (268Wh vs 256Wh), so it runs the same load proportionally longer.
- Bluetti EB3A has 900W more surge headroom (1200W vs 300W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 521 PowerHouse is 1.9 lb lighter (8.2 lb vs 10.1 lb).
- Anker 521 PowerHouse is rated for 3,000 cycles vs 2,500 — meaningful if you cycle it daily.
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
The budget veteran. 268Wh at $239 with a 30-minute recharge — still one of the fastest-charging small units you can buy.
Best for: Budget campers who value fast top-ups between trips.
Where it falls short:
- 2500 cycles is the lowest here
- 268Wh empties fast under real load
A pocket-scale LiFePO4 unit for keeping devices alive. 200W of output means it's a charger, not an appliance station.
Best for: Travelers and campers topping up phones, cameras and a laptop.
Where it falls short:
- 200W output runs devices only
- 256Wh is small
| Spec | Bluetti EB3A | Anker 521 PowerHouse |
|---|---|---|
| Price | $239 | $249 |
| Capacity | 268 Wh | 256 Wh |
| Continuous output | 600 W | 200 W |
| Surge output | 1200 W | 300 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 2,500 | 3,000 |
| Weight (lighter wins) | 10.1 lb | 8.2 lb |
| Max solar | 200 W | 100 W |
| Recharge time (faster wins) | 30 min | 2h 30m |
Runtime head-to-head
| Appliance | Bluetti EB3A | Anker 521 PowerHouse |
|---|---|---|
| Refrigerator | 3.8 hrs | ❌ |
| Mini fridge | 7.2 hrs | ❌ |
| Chest freezer | 2.8 hrs | ❌ |
| CPAP machine | 5.7 hrs | 5.4 hrs |
| Sump pump | ❌ | ❌ |