Anker SOLIX C300 vs EcoFlow RIVER 3 Plus: Which Bet Fits?
Two ~286 Wh stations, two very different bets: the C300 charges a premium for Anker's build, while the RIVER 3 Plus doubles the AC output for a third of the price. Here's how to pick when your budget is capped.
Updated
At a glance
Two ~286 Wh stations, two very different bets: the C300 charges a premium for Anker's build, while the RIVER 3 Plus doubles the AC output for a third of the price. Here's how to pick when your budget is capped.
Same money, different bets
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If you're shopping the ~286 Wh class, these two stations ask you to bet on different things. The Anker SOLIX C300 bets on brand polish and a lower list price — but at $799 list ($599 current), it costs roughly triple the EcoFlow RIVER 3 Plus's $299 list ($299 current). The RIVER 3 Plus bets on raw AC output: 600 W continuous versus the C300's 300 W, from nearly identical capacity.
That price gap is the whole story. You're not paying for more watt-hours; you're paying for Anker's name and whatever build quality comes with it. The EcoFlow gives you double the continuous output for less than half the money. This comparison is for buyers who've already decided 286 Wh is enough — it is not for whole-home backup or running a fridge for days. If you need 1,000 Wh or more, skip both.
Anker C300 Portable Power Station, 288Wh Solar Generator
Highlights
- 288Wh rated capacity
- 300W continuous AC
- 600W surge
- LiFePO4 chemistry
- 9.1 lb (~4.1 kg)
- About $329.99 list
Best for
- SOLIX C300: phones, cameras and a laptop on short trips
- Travel kits when you need quiet pack power, not appliance runtime
- Brief desk backup for router and lights — not a fridge for days
Strengths
- SOLIX C300: 288Wh pack with 300W continuous / 600W surge — size loads to both numbers
- 9.1 lb (~4.1 kg) is the lightest-class carry in this band — easier stairs and car packing
- SOLIX C300 uses LiFePO4 — cycle-life claims usually beat older NMC marketing lines
- Owners on file: Theme: Customers find the power station performs well as an uninterruptible power supply and appreciate its f…
Watch-outs · not ideal when
- SOLIX C300's small Wh class empties fast with a kettle, hair dryer or space heater
- 300W continuous will not hold heating elements or many compressor surges for long
- Solar input unpublished for SOLIX C300 — do not assume a same-day off-grid refill
- Airline and pack limits may still block SOLIX C300 even when the weight looks friendly
Owner voices
Short takes from public retail reviews — paraphrased or translated when long or non-English; meaning kept close to the original.
“Theme: Customers find the power station performs well as an uninterruptible power supply and appreciate its fast charging capability, reaching 80% in about 50-55 minutes. They praise its power delivery, with one custo…”
“Theme: Charging Devices (64)”
“Theme: Outdoor Electronics (25)”
EcoFlow RIVER 3 Plus
Highlights
- 286Wh rated capacity
- 600W continuous AC
- 1200W surge
- LiFePO4 chemistry
- Up to 220W solar input
- 10.4 lb (~4.7 kg)
Best for
- RIVER 3 Plus: phones, cameras and a laptop on short trips
- Travel kits when you need quiet pack power, not appliance runtime
- Brief desk backup for router and lights — not a fridge for days
Strengths
- RIVER 3 Plus: 286Wh pack with 600W continuous / 1200W surge — size loads to both numbers
- 10.4 lb (~4.7 kg) is the lightest-class carry in this band — easier stairs and car packing
- 10ms-class UPS switchover on the listing — useful when a router restart would hurt
- Owners on file: Theme: Customers find the power station functions well as a UPS and appreciate its compact size and lightweig…
Watch-outs · not ideal when
- RIVER 3 Plus's small Wh class empties fast with a kettle, hair dryer or space heater
- Usable energy on RIVER 3 Plus is below the 286Wh label once the inverter is working
- Rated 220W solar on RIVER 3 Plus is optimistic; shade and cables cut real watts
- Airline and pack limits may still block RIVER 3 Plus even when the weight looks friendly
Owner voices
Short takes from public retail reviews — paraphrased or translated when long or non-English; meaning kept close to the original.
“Theme: Customers find the power station functions well as a UPS and appreciate its compact size and lightweight design. They consider it a great option for camping, with one customer noting it can power their entire c…”
“Theme: Power Outages (13)”
“Theme: Multiple Devices (4)”
How we compared
This is a listing-and-owner-theme comparison, I weighted output-per-dollar at 40%, capacity at 25%, portability (weight) at 20%, and warranty/cycle life at 15%. The RIVER 3 Plus wins on output-per-dollar and published warranty; the C300 wins on weight and brand rating. No independent measurement was performed. I'm Avery Nolan, WattPicks founding editor — I cover portable power capacity and output trade-offs across the catalogue, and I don't claim bench tests.
Scoreboard on those weights — Anker SOLIX C300 Portable Power Station, 288Wh Solar Generator (list $329.99): High where list price and published capacity match the job, Med on continuous watts; EcoFlow RIVER 3 Plus (list $299): High on continuous watts and ports, Med on price. That is why the pick splits by job rather than one universal winner.
Spec snapshot
Numbers below are from the listings. Weight is in pounds; capacity and output are as published. The C300's 300 W is continuous AC; the RIVER 3 Plus's 600 W is continuous, with a 1200 W X-Boost surge mode that is not the same as steady output.
| Product | Price | Capacity (Wh) | Output (W) | Weight (lb) | Rating |
|---|---|---|---|---|---|
| Anker SOLIX C300 Portable Power Station, 288Wh Solar Generator | $329.99 | 288 Wh | 300 W | 9.1 lb | 4.6 |
| EcoFlow RIVER 3 Plus | $299 | 286 Wh | 600 W | 10.4 lb | 4.4 |
Where the Anker SOLIX C300 wins
The C300's clearest win is weight: 9.1 lb versus 10.4 lb. That 1.3 lb difference matters if you're carrying it up stairs or into a tent. It's also the lighter unit for a backpack or a small shelf.
Anker's rating is higher on paper — 4.6 from 1,919 ratings versus 4.4 from 368 — but I'd treat that as a brand-trust signal, not a performance verdict. The C300 has no owner reviews on file here, so I can't tell you how it behaves with a CPAP or a cooler. What I can say: if you want the lighter box and you're comfortable paying a premium for Anker's ecosystem, this is the one.
Where the EcoFlow RIVER 3 Plus wins
Output per dollar is not close. The RIVER 3 Plus delivers 600 W continuous from 286 Wh for $299 current — that's enough to run a small 12 V cooler, a laptop, and a few USB devices without tripping the inverter. The C300's 300 W ceiling will struggle with anything that has a motor or a heating element.
EcoFlow also publishes a 5-year service term and a 3,000-cycle LiFePO4 battery. The C300's cycle life and warranty aren't in the data I have, so I won't guess. The RIVER 3 Plus adds app control, a built-in light, and expandability via EB300/EB600 extra batteries (sold separately) — useful if you later want to stretch runtime without buying a bigger station.
Pick-one rules + who should skip both
Buy the Anker SOLIX C300 if you want the lighter unit and you're willing to pay for Anker's brand and support — and you only need 300 W for phones, lights, a laptop, and maybe a small fan. Buy the EcoFlow RIVER 3 Plus if your load includes a cooler, a CPAP, or any motor-driven device, and you want the most output for the least money.
Skip both if you need to run a full-size refrigerator, a space heater, or a sump pump for hours. At ~286 Wh, neither is a whole-home backup solution. Also skip the C300 if you're on a tight budget — the RIVER 3 Plus does more for less. And skip the RIVER 3 Plus if you absolutely need the lightest possible pack; the C300 is 1.3 lb lighter.
What owners report
Owner feedback is uneven: the RIVER 3 Plus has a handful of reviews on file, while the C300 has none. Treat the EcoFlow themes as directional, not definitive.
- EcoFlow RIVER 3 Plus: Camping-capable — one owner ran a 12 V cooler overnight at a festival and said it met their goals, though they'd size up or add a battery next time.
- EcoFlow RIVER 3 Plus: Feature-rich but not flawless — praise for the 600 W inverter and fast charging is mixed with a few reports of charging hiccups after a few months.
Frequently asked
Which is better for most buyers, the Anker SOLIX C300 or the EcoFlow RIVER 3 Plus?
Neither sweeps the scoreboard (3–3 on 7 shared metrics). Match the winning rows to your job — Carry / camping usually decide it faster than brand preference.
I care most about carry / camping — which should I buy?
Choose SOLIX C300 when you will move the unit often — it leads on weight and watt-hours per pound.
Method and sources
Model names and list prices come from the WattPicks catalog at build time. WattPicks does not run its own laboratory tests on power stations, and nothing on this page is presented as a measured result — it is catalog-backed buying guidance.
Read our methodology for how the catalog is normalized, and about WattPicks for who publishes it.