Quick answer: The Jackery Explorer 300 v2 has 2Wh more nominal capacity (288Wh vs. 286Wh); the EcoFlow RIVER 3 Plus lists more continuous AC output (600W vs. 300W); the Jackery Explorer 300 v2 is lighter (8.16 lb vs. 10.4 lb). At a steady 60W load our model estimates 3.3 h for the Jackery 300 v2 and 3.3 h for the EcoFlow RIVER 3 Plus. There is no universal winner: your loads, charging plan and the price of equivalent bundles decide.
Where they differ
Choose the Jackery Explorer 300 v2 if…
- you will carry it often (2.2 lb lighter)
- energy per kilogram matters to you
- you start motors or compressors (surge 600W published)
Choose the EcoFlow RIVER 3 Plus if…
- you need to run heavier loads at once (600W continuous)
- you want more AC outlets (3)
- you prefer a cycle rating to a higher end point (80% remaining)
Read the cycle ratings carefully
The two manufacturers do not rate battery life to the same end point: Jackery Explorer 300 v2 states 4,000 to 70%, EcoFlow RIVER 3 Plus states 3,000 to 80%. A rating to 70% remaining capacity is not directly comparable with one to 80%.
Notes from the manufacturer pages
- EcoFlow RIVER 3 Plus: X-Boost up to 1,200W for suitable loads; no separate surge figure listed.
Check your own loads
Capacity decides how long; continuous output decides what can run at once; surge decides whether motors and compressors start. Put your appliances into the tools below with either model preselected, and compare delivered prices for equivalent bundles before you buy.
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Frequently asked questions
Which has more capacity, Jackery Explorer 300 v2 or EcoFlow RIVER 3 Plus?
The Jackery Explorer 300 v2 lists 288Wh, 2Wh more than the EcoFlow RIVER 3 Plus (286Wh).
Which is lighter?
The Jackery Explorer 300 v2 at 8.16 lb (3.7 kg), versus 10.4 lb for the EcoFlow RIVER 3 Plus. Per kilogram, the Jackery Explorer 300 v2 stores more energy (77.8 Wh/kg).
How long will they run a 60W load?
With 85% efficiency, a 10% reserve and 8W idle draw, our model estimates 3.3 hours for the Jackery Explorer 300 v2 and 3.3 hours for the EcoFlow RIVER 3 Plus. These are calculated examples, not test results.