Goal Zero Yeti 1500 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 $1450 less. Whether that gap is worth closing depends on what you need to run.
- Goal Zero Yeti 1500 holds 488% more energy (1505Wh vs 256Wh), so it runs the same load proportionally longer.
- Goal Zero Yeti 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 44.5 lb lighter (8.2 lb vs 52.75 lb).
- Goal Zero Yeti 1500 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
Goal Zero Yeti 1500
The new-for-2026 LiFePO4 Yeti 1500 — a big durability and cycle-life upgrade over the older 1500X it replaces.
Best for: Home backup buyers who want Goal Zero's build with modern battery chemistry.
Where it falls short:
- 52.75 lb — a two-hand lift
- 600W solar input is modest for the capacity
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 | Goal Zero Yeti 1500 | Anker 521 PowerHouse |
|---|---|---|
| Price | $1699 | $249 |
| Capacity | 1505 Wh | 256 Wh |
| Continuous output | 2000 W | 200 W |
| Surge output | 3600 W | 300 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 52.75 lb | 8.2 lb |
| Max solar | 600 W | 100 W |
| Recharge time (faster wins) | 1h 30m | 2h 30m |
Runtime head-to-head
| Appliance | Goal Zero Yeti 1500 | Anker 521 PowerHouse |
|---|---|---|
| Refrigerator | 21.3 hrs | ❌ |
| Mini fridge | 40.6 hrs | ❌ |
| Chest freezer | 16.0 hrs | ❌ |
| CPAP machine | 32.0 hrs | 5.4 hrs |
| Sump pump | 1.6 hrs | ❌ |