Jackery
Jackery Explorer 300 Plus
$299.99 · lifetime cost n/a — cycle life not rated to the 80% standardPrice not independently confirmed — check the retailer before buying.
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What it actually runs
Usable energy ≈ 245 Wh after our standard 85% inverter-efficiency assumption. Methodology
| CPAP overnightCPAP, humidifier off (40 W × 8 h) | ~6.1 h continuous · 0.8 days at typical daily use |
|---|---|
| EssentialsFridge + wifi + 3 lights (~190 W continuous) | ~1.3 h continuous · 0.1 days at typical daily use |
| Storm kitFridge + sump pump + lights + phones (~1,000 W) | ~0.2 h continuous · 0.1 days at typical daily use |
| Quick equivalents | ≈ 0 CPAP nights · 2 h of fridge · 12 phone charges |
How long will it run YOUR appliance?
Solar recharge
The Explorer 300 Plus accepts up to 100 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, which exceeds this unit’s input cap — it can stretch runtime but not run essentials indefinitely.
Compatible kits: Jackery SolarSaga 100 (100 W) · Jackery SolarSaga 200 (200 W) — proprietary connector; third-party MC4 panels need an adapter.
Specifications
| Capacity | 288 Wh |
|---|---|
| Usable (85%) | 245 Wh |
| AC output | 300 W |
| Surge output | 600 W |
| Max solar input | 100 W |
| Outage switchover | No passthrough switchover |
| Output waveform | Pure sine wave |
| Battery chemistry | LiFePO4 (LFP) |
| Expandable battery | No |
| Rated cycles | Not published to the 80% standard |
| Third-party solar | Own-brand panels only |
| Lifetime cost | n/a |
Alternatives to consider
- Anker SOLIX C300 — 288 Wh / 300 W at $230 · compare head-to-head →
- EcoFlow RIVER 3 Plus — 286 Wh / 600 W at $299 · compare head-to-head →
Common questions
How long will the Jackery Explorer 300 Plus run a refrigerator?
About 2 hours of compressor running time — which at a realistic duty cycle covers roughly 0.2 days of normal fridge use. Estimates use usable capacity (85% of rated) and carry ±15%.
Can the Explorer 300 Plus run a CPAP?
Yes — a 40 W CPAP runs about 0 full nights per charge without humidification. A heated humidifier roughly triples the draw and cuts nights to ~0.
Can it run a space heater?
No — a typical 1,500 W space heater exceeds this unit's 300 W output. An electric blanket (100 W) runs ~2 hours and warms a person, not a room.
How fast does the Explorer 300 Plus recharge from solar?
At its 100 W input cap, roughly 3.6 hours of good sun for a full refill (real-world 80% derate applied). Cloud cover stretches that substantially.