Bluetti Apex 300 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
Anker 521 PowerHouse costs $1350 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti Apex 300 holds 980% more energy (2764Wh vs 256Wh), so it runs the same load proportionally longer.
- Bluetti Apex 300 has 7380W more surge headroom (7680W vs 300W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 521 PowerHouse is 71.2 lb lighter (8.2 lb vs 79.4 lb).
- Bluetti Apex 300 is rated for 6,000 cycles vs 3,000 — meaningful if you cycle it daily.
Bluetti Apex 300
6000 cycles at 2764Wh — the best long-term cost-per-kWh in this list if you cycle daily. Bluetti's answer to the Elite 200 V2 at scale.
Best for: Off-grid solar setups where daily cycling makes lifespan the dominant cost.
Where it falls short:
- 79.4 lb
- Newer product with limited long-term field data
Anker 521 PowerHouse
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 Apex 300 | Anker 521 PowerHouse |
|---|---|---|
| Price | $1599 | $249 |
| Capacity | 2764 Wh | 256 Wh |
| Continuous output | 3840 W | 200 W |
| Surge output | 7680 W | 300 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 6,000 | 3,000 |
| Weight (lighter wins) | 79.4 lb | 8.2 lb |
| Max solar | 2600 W | 100 W |
| Recharge time (faster wins) | 1h 30m | 2h 30m |
Runtime head-to-head
| Appliance | Bluetti Apex 300 | Anker 521 PowerHouse |
|---|---|---|
| Refrigerator | 39.2 hrs | ❌ |
| Mini fridge | 74.6 hrs | ❌ |
| Chest freezer | 29.4 hrs | ❌ |
| CPAP machine | 58.7 hrs | 5.4 hrs |
| Sump pump | 2.9 hrs | ❌ |