288Wh against 286Wh. On capacity these two compacts are the same product, so the decision comes down to what each one can actually power, and how heavy it is in your hand.
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The two products compared
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Product A
Anker
Anker SOLIX C300 Portable Power Station
Budget ($)
Best for: the lightest possible unit for devices, cameras and lighting
A carry-anywhere LiFePO4 unit built around a 288Wh pack and 300W of AC output, with a folding handle, a bright integrated light and enough USB-C wattage to run a laptop and phones off one small box.
Product B
EcoFlow
EcoFlow RIVER 3 Plus Portable Power Station
Budget ($)
Best for: compact buyers who want 600W of AC output and room to expand
EcoFlow's compact LiFePO4 unit pairs a 286Wh pack with 600W of AC output and X-Boost handling for higher-rated resistive loads, plus an add-on battery port that lets the same small chassis grow later.
Comparison at a glance
| Category | Anker SOLIX C300 | EcoFlow RIVER 3 Plus | Edge |
|---|---|---|---|
| Capacity | 288Wh | 286Wh | Tie |
| AC output | 300W continuous | 600W continuous | EcoFlow |
| Weight | About 7.7 lb | About 10 lb | Anker |
| Expansion | Not expandable | Add-on battery supported | EcoFlow |
| Chemistry | LiFePO4 | LiFePO4 | Tie |
| Check price | Check Price on Amazon | Check Price on Amazon |
300W vs 600W changes what you can plug in
The RIVER 3 Plus doubles the AC ceiling, and X-Boost extends it further for higher-rated resistive appliances. That is the difference between device charging and small-appliance use.
The C300's 300W limit is fine for laptops, cameras, lights, a router and most CPAP machines — which is what compacts are usually bought for.
Weight is the Anker's argument
About 7.7 lb against about 10 lb. On a shelf that is nothing; in a pack it is the whole point of buying a compact.
If the unit is going in a bag rather than a boot, the C300 wins before the spec sheet gets involved.
Expandability
The RIVER 3 Plus accepts an add-on battery, which is unusual at this size and turns a weekend compact into something closer to a mid-size unit.
Do the arithmetic before committing: base unit plus battery often approaches the cost of a 700Wh–1kWh station bought outright.
Keep reading
Frequently asked questions
Final verdict
Take the C300 when weight decides the purchase and the loads are devices. Take the RIVER 3 Plus when you want a compact that can still start a small appliance — and might grow later.
Best for the lightest possible unit for devices, cameras and lighting
Anker SOLIX C300 Portable Power Station
The most usable amount of power you can still throw in a backpack.
Best for compact buyers who want 600W of AC output and room to expand
EcoFlow RIVER 3 Plus Portable Power Station
Double the AC ceiling of most compacts, with an expansion path the segment usually lacks.
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