Goal Zero Yeti 700 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 $550 less. Whether that gap is worth closing depends on what you need to run.
- Goal Zero Yeti 700 holds 164% more energy (677Wh vs 256Wh), so it runs the same load proportionally longer.
- Goal Zero Yeti 700 has 700W more surge headroom (1000W vs 300W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 521 PowerHouse is 12.1 lb lighter (8.2 lb vs 20.3 lb).
- Goal Zero Yeti 700 is rated for 4,000 cycles vs 3,000 — 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 largest of the rugged compacts. Still not an appliance unit — 600W of output caps what it can drive — but a durable mid-size companion.
Best for: Rugged off-grid use where durability outranks running heavy loads.
Where it falls short:
- 600W output rules out compressors and heaters
- 20.3 lb is heavy for 677Wh
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 | Goal Zero Yeti 700 | Anker 521 PowerHouse |
|---|---|---|
| Price | $799 | $249 |
| Capacity | 677 Wh | 256 Wh |
| Continuous output | 600 W | 200 W |
| Surge output | 1000 W | 300 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 20.3 lb | 8.2 lb |
| Max solar | 300 W | 100 W |
| Recharge time (faster wins) | 2h | 2h 30m |
Runtime head-to-head
| Appliance | Goal Zero Yeti 700 | Anker 521 PowerHouse |
|---|---|---|
| Refrigerator | 9.6 hrs | ❌ |
| Mini fridge | 18.3 hrs | ❌ |
| Chest freezer | 7.2 hrs | ❌ |
| CPAP machine | 14.4 hrs | 5.4 hrs |
| Sump pump | ❌ | ❌ |