Anker SOLIX C300
62BatteryRank score · Balanced
← CompareCheck price on Amazon 
Check price on Amazon
Anker SOLIX C300 vs EcoFlow RIVER 3 Plus
Decision readout
Better station
EcoFlow RIVER 3 Plus takes capacity and output, Anker SOLIX C300 takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to EcoFlow RIVER 3 Plus by 3 points — a hair, not a mandate.
- powerEcoFlow RIVER 3 Plus+16600 W vs 300 W continuous
- trustAnker SOLIX C300+7
- livabilityAnker SOLIX C300+444.1 kg vs 4.7 kg
EcoFlow RIVER 3 Plus
65BatteryRank score · Balanced
What changes the decision
- Home backup: EcoFlow RIVER 3 Plus — higher AC output
- Camping & RV: Anker SOLIX C300 — lighter and easier to carry
By the BatteryRank Engineering Team
01 · Score evidence
Score breakdown
62
Anker SOLIX C300
Overall
65
EcoFlow RIVER 3 Plus
51
POWER
EcoFlow RIVER 3 Plus +16
67
Battery-side usable capacity and how much you can run at once.
77
TRUST
Anker SOLIX C300 +7
70
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
77
Wall and solar recharge speed.
58
LIVABILITY
Anker SOLIX C300 +44
14
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. Show source
claimed sourceankersolix.com ↗2026-07-04The marketing number — total cell capacity.
AC deliveredmeasured
269 Wh. Show source
verified source~269 Wh usable via USB at 60W (Trusted Reviews)2026-07-04~269 Wh usable via USB at 60W (Trusted Reviews) · 7% below the label
EcoFlow RIVER 3 Plus
Rated (on the box)
286 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
243 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Same assumptions
Same-device runtime
| Device | Anker SOLIX C300 | EcoFlow RIVER 3 Plus | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 3.7 nights | about 3.4 nights | 9 W · |
| CPAP (heated humidifier on) | about 0.6 nights | about 0.5 nights | 56 W · |
| Refrigerator (full-size) | about 4.3 hours | about 3.9 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 15 hours | about 14 hours | 18 W · |
| Laptop (65W charger) | about 8.3 hours | about 7.5 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 13 full charges | about 12 full charges | 20 W · |
One device at a time; estimates use each station's usable AC energy. Build your own load →
04 · Sourced hardware
Key specs, side by side
| Spec | Anker SOLIX C300 | EcoFlow RIVER 3 Plus |
|---|---|---|
| AC-delivered capacity | 269 Whverified. Show sourceverified source~269 Wh usable via USB at 60W (Trusted Reviews)2026-07-04 | 243 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-04 |
| Continuous power output | 300 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 600 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Surge power output | 600 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 1,200 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Max solar input | 100 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 220 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| AC charge time (0–100%) | — | 60 min. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Weight | 4.1 kg. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 4.72 kg. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 3,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
Only show differences
- AC-delivered capacity269 Wh243 Wh
- Continuous power output300 W600 W
- Surge power output600 W1,200 W
- Max solar input100 W220 W
- AC charge time (0–100%)—60 min
- Weight4.1 kg4.72 kg
Manufacturer figures unless marked verified or est. Tap or focus a figure to view its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
Where these rank
- Anker SOLIX C300 #4 of 8 in Quietest Power Stations · #4 of 10 in Best 300 Wh Stations
- EcoFlow RIVER 3 Plus #2 of 10 in Best 300 Wh Stations · #3 Small / carry in Best Portable Power Stations
Where to buy
Affiliate links: we may earn a commission if you buy, at no extra cost to you. Commission never affects our rankings.
Anker SOLIX C300
EcoFlow RIVER 3 Plus
Quick answers
- Is the Anker SOLIX C300 better than the EcoFlow RIVER 3 Plus?
- EcoFlow RIVER 3 Plus takes capacity and output, Anker SOLIX C300 takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to EcoFlow RIVER 3 Plus by 3 points — a hair, not a mandate.
- Which has more usable capacity, the Anker SOLIX C300 or EcoFlow RIVER 3 Plus?
- The Anker SOLIX C300, by 26 Wh — 269 Wh versus 243 Wh, a 11% advantage. At a 60 W load that is roughly 0.4 extra hours before the battery is empty. Both figures are estimated AC-delivered energy, not the nameplate battery rating — the watt-hours that actually reach your devices, which is always less than the number on the box.
- Which has more AC output, the Anker SOLIX C300 or EcoFlow RIVER 3 Plus?
- The EcoFlow RIVER 3 Plus: 300 W versus 600 W continuous. That gap matters only if a load sits between the two numbers — below 300 W both run it, above 600 W neither does. Surge headroom follows the same order: 600 W against 1,200 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the Anker SOLIX C300 and EcoFlow RIVER 3 Plus?
- On the same sourced load — a refrigerator (full-size) — the Anker SOLIX C300 runs longer: 4.3 hours against 3.9. These are planning estimates from each model's AC-delivered capacity, not stopwatch tests; real duty cycle and temperature move them.
- Which is lighter, the Anker SOLIX C300 or EcoFlow RIVER 3 Plus?
- The Anker SOLIX C300, by 0.6 kg (4.1 kg versus 4.7 kg). Both weights are manufacturer figures for the bare unit; cables and a solar panel add to whatever you actually carry.
- Which model should I buy for my use case?
- On the sub-scores that describe each use case: the EcoFlow RIVER 3 Plus for home backup; the Anker SOLIX C300 for camping & rv. They split, so the honest answer depends on which of those you are actually buying for.
Keep deciding
- Full scorecard, specs & price for Anker SOLIX C300 →
- Full scorecard, specs & price for EcoFlow RIVER 3 Plus →
- See more alternatives to Anker SOLIX C300 →
- See more alternatives to EcoFlow RIVER 3 Plus →
- What size do you need? →
- Browse all rankings →
- Check device runtime evidence →
- Compare outage and trip load plans →
- Browse complete power kits →
- Capacity vs output explained →
- Battery cycle-life thresholds →
- UPS behavior explained →