Anker 521 PowerHouse vs Ampace Andes 1500
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 $750 less. Whether that gap is worth closing depends on what you need to run.
- Ampace Andes 1500 holds 471% more energy (1462Wh vs 256Wh), so it runs the same load proportionally longer.
- Ampace Andes 1500 has 3300W more surge headroom (3600W vs 300W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 521 PowerHouse is 28.6 lb lighter (8.2 lb vs 36.8 lb).
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
Ampace Andes 1500
Backed by an Amperex/CATL cell pedigree, the Andes 1500 stands out on charge speed — 0-80% in well under an hour — and a light 36.8 lb for 1.5kWh.
Best for: Buyers who prize fast charging and low weight at 1.5kWh.
Where it falls short:
- Newer brand with a thinner track record
- Not expandable
| Spec | Anker 521 PowerHouse | Ampace Andes 1500 |
|---|---|---|
| Price | $249 | $999 |
| Capacity | 256 Wh | 1462 Wh |
| Continuous output | 200 W | 2000 W |
| Surge output | 300 W | 3600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 8.2 lb | 36.8 lb |
| Max solar | 100 W | 1000 W |
| Recharge time (faster wins) | 2h 30m | 55 min |
Runtime head-to-head
| Appliance | Anker 521 PowerHouse | Ampace Andes 1500 |
|---|---|---|
| Refrigerator | ❌ | 20.7 hrs |
| Mini fridge | ❌ | 39.5 hrs |
| Chest freezer | ❌ | 15.5 hrs |
| CPAP machine | 5.4 hrs | 31.1 hrs |
| Sump pump | ❌ | 1.6 hrs |