The Jackery Explorer 300D and the EcoFlow RIVER 3 land in the same compact, carry-on class — but they answer the “what do I plug in?” question very differently. One is built around USB-C; the other around a wall outlet. Here’s how they line up and which one fits your kit.
Two philosophies
The 300D is DC/USB-first. It has no AC inverter; instead it pushes 300W of total USB output through dual 140W USB-C ports, plus USB-A and 12V DC. That keeps it light and silent, and it fast-charges laptops and cameras directly.
The RIVER 3 is inverter-first. It includes a standard AC outlet, so it can run small wall-plug appliances — at the cost of more weight and a cooling fan.
Side by side
| Jackery Explorer 300D | EcoFlow RIVER 3 | |
|---|---|---|
| Capacity | 288 Wh (LiFePO₄) | ~245 Wh (LiFePO₄) |
| AC outlet | None (DC/USB only) | Yes (~300W) |
| Max USB-C | 140W × 2 | ~100W |
| Total USB output | 300 W | — |
| Cycle life | 4,000 to 70% | ~3,000 |
| Weight | ~5.5 lbs | ~7.7 lbs |
| Fan | Fan-free, 0 dB | Active cooling |
| Charge to 80% | ~1 hour | ~1 hour |
RIVER 3 figures are approximate and may vary by region and revision — confirm against EcoFlow’s current spec sheet before relying on them.
Where each one wins
Choose the 300D if…
- Your essentials run on USB-C — laptop, phone, camera, drone, tablet, Starlink Mini.
- You want the lightest, quietest option and you’ll carry it often.
- You value the longer 4,000-cycle LFP lifespan and dual 140W fast charging.
Choose the RIVER 3 if…
- You need a real AC outlet for a small wall-plug device.
- You’ll accept extra weight and a fan for that flexibility.
Bottom line
If your packing list is USB-C and you care about weight, silence, and long-term cycle life, the 300D is the sharper tool — more capacity, faster USB-C, lighter body. If you must run an AC appliance off-grid, the inverter in the RIVER 3 earns its weight. Match the unit to what you actually plug in, and the choice gets easy.
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