Anker SOLIX C300
66BatteryRank score
$249.99as of 2026-07-11
Fair price← CompareCheck price on Amazon 
Check price on Amazon
Anker SOLIX C300 vs EcoFlow RIVER 3
Decision readout
Better station
Too close to call overall — choose by how and where you use it.
Better buy today
No price tie-breaker today — choose based on fit and the sourced details.
EcoFlow RIVER 3
59BatteryRank score
$196.32as of 2026-07-11
Fair priceWhat changes the decision
- Home backup: Anker SOLIX C300 — more usable capacity and AC output
- Camping & RV: EcoFlow RIVER 3 — lighter and easier to carry
01 · Score evidence
Score breakdown
66
Anker SOLIX C300
Overall
59
EcoFlow RIVER 3
59
POWER
Anker SOLIX C300 +25
34
Usable capacity and how much you can run at once.
80
TRUST
Anker SOLIX C300 +3
77
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
79
Wall and solar recharge speed.
53
LIVABILITY
EcoFlow RIVER 3 +8
61
Lightweight, portable, and quiet enough to live with.
Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.
02 · Usable energy
Capacity truth
The watt-hours on the box aren't what reaches your devices. Same scale, both units.
Anker SOLIX C300
Rated (on the box)288 Wh
The marketing number — total cell capacity.
Usable (at the outlet)measured269 Wh
~269 Wh usable via USB at 60W (Trusted Reviews) · 7% below the label
EcoFlow RIVER 3
Rated (on the box)245 Wh
The marketing number — total cell capacity.
Usable (at the outlet, est.)208 Wh
What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Sourced hardware
Key specs, side by side
| Spec | Anker SOLIX C300 | EcoFlow RIVER 3 |
|---|---|---|
| Usable capacity | 288 Wh | 245 Wh |
| Continuous power output | 300 W | 300 W |
| Surge power output | 600 W | 600 W |
| Max solar input | 100 W | 110 W |
| AC charge time (0–100%) | — | 60 min |
| Weight | 4.1 kg | 3.54 kg |
| Rated cycle life | 3,000 cycles | 3,000 cycles |
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Hover any figure for its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
04 · Tracked street price
Price & fair-price verdict
Anker SOLIX C300
$249.99as of 2026-07-11Fair price
EcoFlow RIVER 3
$196.32as of 2026-07-11Fair price
Each verdict compares today's price against that model's own tracked history — never MSRP theater.