The Jackery Explorer 300 Plus is the better choice when its extra stored energy solves the trip’s measured load. It has 288Wh of nameplate capacity versus 245Wh for the EcoFlow RIVER 3—a 43Wh or roughly 17.6% advantage before losses.

The EcoFlow RIVER 3 is the better choice when fast wall charging, slightly lower weight, and the IP54-rated battery pack matter more. EcoFlow claims a one-hour AC recharge; Jackery’s current U.S. support table says around two hours.

Neither is a blanket winner. Both are 300W-class portable stations. Connector compatibility, device peaks, energy consumption, recharge access, and protected placement decide the purchase.

Decision Jackery Explorer 300 Plus EcoFlow RIVER 3
Exact identity JE-300B; verify the model in search results RIVER 3, 245Wh; verify the capacity in search results
Nameplate capacity 288Wh 245Wh
Rated AC output 300W 300W
Short/high-load claim 600W surge peak X-Boost up to 600W for supported loads
Weight About 8.27 lb. About 7.8 lb.
Wall recharge claim Around 2 hours About 1 hour
Solar input maximum 100W 110W
Weather statement No IP claim relied on here IP54-rated battery pack, not permission to leave unit exposed

Capacity: 43Wh matters only after the load audit

Nameplate watt-hours do not equal delivered watt-hours. Inverter conversion, DC conversion, temperature, cables, standby use, battery management, and device charging losses reduce output.

For a planning comparison, choose a conservative efficiency assumption and keep it visibly separate from manufacturer specifications. At an illustrative 85% delivery assumption:

Constant device load Jackery estimate EcoFlow estimate
20W 288 × 0.85 ÷ 20 = 12.2 hr 245 × 0.85 ÷ 20 = 10.4 hr
40W 6.1 hr 5.2 hr
100W 2.4 hr 2.1 hr

These are arithmetic scenarios, not measured runtimes or guarantees. A compressor cooler cycles instead of drawing constant power; a laptop changes draw with workload and state of charge. Measure the actual setup and leave reserve.

Output: 300W is the shared hard starting point

Jackery lists 300W AC output and a 600W instantaneous peak. EcoFlow lists 300W rated output and X-Boost up to 600W. X-Boost can alter voltage to keep some compatible resistive devices operating; it is not a universal 600W supply and can be unsuitable for sensitive equipment.

For every device, record:

  • plug or connector;
  • continuous watts;
  • startup or surge watts;
  • hours or duty cycle;
  • whether reduced-voltage modes are allowed by the device maker.

If a critical appliance exceeds 300W continuous input, choose a larger correctly rated station rather than building the trip around a marketing mode.

Ports and the one-outlet issue

Jackery’s U.S. support page lists one AC outlet, a 12V/10A car port, a 100W USB-C input/output, another USB-C output, and USB-A. One AC receptacle can be limiting even when total watts are adequate. A household power strip does not increase the inverter rating and may create a poor campsite cable arrangement.

EcoFlow lists capacity for up to six simultaneous devices across its outputs. Count the exact connectors on the current U.S. model and map them to the equipment. Do not assume a port merely because another RIVER variant has it.

Campers whose entire kit is USB-C and 12V should also read the Anker SOLIX C300 DC review . Removing the AC inverter changes compatibility and weight; the DC suffix is a different product decision.

Recharging: EcoFlow is faster at the wall

EcoFlow’s one-hour AC charging claim is useful during a short stop with power. Jackery’s current U.S. table gives around two hours for AC, about 4.6 hours with a SolarSaga 100 panel, and around 5.5 hours from a car source under its stated setup.

Those are maker figures, not promises. Solar nameplate wattage is rarely sustained all day. Panel voltage, current, connector, polarity, shade, angle, temperature, cable loss, and the station’s input curve all matter. Confirm the exact panel and adapter combination in the manual.

Weather: IP54 needs careful wording

EcoFlow describes the RIVER 3’s battery pack as IP54 rated. That does not authorize unattended rain exposure, submerged connectors, or operation outside the manual. Jackery does not provide an equivalent claim used in this comparison.

Keep either station dry, ventilated, shaded from excessive heat, and away from bedding. Never place it where rainwater can run into active ports. A solar panel’s outdoor rating does not transfer to the power station.

Size, sound, and campsite use

Jackery publishes 9.1 by 6.1 by 6.6 inches and around 8.27 pounds. EcoFlow is slightly lighter at about 7.8 pounds. Both remain vehicle or short-carry items once cables and a panel are added.

Noise claims are measured under selected conditions. Fan behavior changes with charging, load, and temperature. If quiet sleeping is essential, test the exact load at home and keep the station positioned according to ventilation rules rather than burying it under gear.

Which should you buy?

Choose Jackery Explorer 300 Plus when:

  • 288Wh versus 245Wh meaningfully covers the measured energy budget;
  • one AC outlet is enough;
  • around two-hour wall charging fits the itinerary;
  • the JE-300B connector layout matches every essential device.

Choose EcoFlow RIVER 3 when:

  • one-hour wall recharge matters;
  • lower weight is valuable;
  • the 245Wh plan still has reserve;
  • the exact RIVER 3 ports and X-Boost limitations suit the load.

Choose neither when an essential device requires more than 300W continuous AC, the energy worksheet consumes nearly all nameplate capacity, or the station cannot be protected from conditions.

Sources

Specifications and retail identities were checked September 9, 2026. This is researched compatibility analysis, not a hands-on capacity test. Prices and stock change.

FAQ

Which has more capacity?

Jackery: 288Wh versus EcoFlow’s 245Wh. Delivered energy is lower than either nameplate figure.

Can either run a 600W appliance continuously?

No. Both list 300W rated AC output. Jackery’s surge and EcoFlow’s X-Boost are distinct limited modes, not 600W continuous ratings.

Which charges faster from a wall outlet?

EcoFlow claims about one hour; Jackery’s current U.S. support page says around two hours.