Goal Zero
Goal Zero Yeti PRO 4000
3,994 Wh
3,600 W output
7,200 W surge
$3,399 · Lifetime $0.21/kWh over 4,000 rated cycles · MSRP $3,999
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What it actually runs
Usable energy ≈ 3,395 Wh after our standard 85% inverter-efficiency assumption. Methodology
| CPAP overnightCPAP, humidifier off (40 W × 8 h) | ~85 h continuous · 10.6 days at typical daily use |
|---|---|
| EssentialsFridge + wifi + 3 lights (~190 W continuous) | ~18 h continuous · 2.0 days at typical daily use |
| Storm kitFridge + sump pump + lights + phones (~1,000 W) | ~3.4 h continuous · 0.8 days at typical daily use |
| Quick equivalents | ≈ 10 CPAP nights · 23 h of fridge · 170 phone charges |
Solar recharge
The Yeti PRO 4000 accepts up to 3,000 W of solar input — panels beyond that sit idle. To sustain an essentials load (~1,680 Wh/day) off-grid you'd need roughly 470 W of panels, within this unit’s cap — sun permitting, it can run essentials indefinitely.
Compatible kits: Goal Zero Boulder 200 (200 W) · Goal Zero Ranger 300 Briefcase (300 W) — proprietary connector; third-party MC4 panels need an adapter.
Specifications
| Capacity | 3,994 Wh |
|---|---|
| Usable (85%) | 3,395 Wh |
| AC output | 3,600 W |
| Surge output | 7,200 W |
| Max solar input | 3,000 W |
| UPS switchover | No UPS mode |
| Expandable battery | Yes |
| Rated cycles | 4,000 |
| Third-party solar | Own-brand panels only |
| Lifetime cost | $0.21/kWh |
Alternatives to consider
- EcoFlow DELTA Pro 3 — 4,096 Wh / 4,000 W at $2,599 · compare head-to-head →
- Anker SOLIX F3800 Plus — 3,840 Wh / 6,000 W at $2,300 · compare head-to-head →