Anker SOLIX C300
65BatteryRank score · Balanced
$299.99as of
High price← CompareCheck price on Amazon 
Anker SOLIX C300 vs Anker SOLIX C800 X
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.
Anker SOLIX C800 X
61BatteryRank score · Balanced
No street price observed yet.
What changes the decision
- Home backup: Anker SOLIX C300 — stronger combined capacity and AC-output score
- Camping & RV: Anker SOLIX C300 — lighter and easier to carry
01 · Score evidence
Score breakdown
65
Anker SOLIX C300
Overall
61
Anker SOLIX C800 X
56
POWER
Anker SOLIX C300 +1
55
Battery-side usable capacity and how much you can run at once.
80
TRUST
Anker SOLIX C300 +8
72
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
76
Wall and solar recharge speed.
53
LIVABILITY
Anker SOLIX C300 +32
21
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
Anker SOLIX C800 X
Rated (on the box)
768 Wh. Show source
claimed sourceankersolix.com ↗2026-07-04The marketing number — total cell capacity.
AC deliveredmeasured
580 Wh. Show source
verified source~580 Wh extracted at 1200W over 29 min (Trusted Reviews)2026-07-04~580 Wh extracted at 1200W over 29 min (Trusted Reviews) · 24% below the label
03 · Same assumptions
Same-device runtime
| Device | Anker SOLIX C300 | Anker SOLIX C800 X | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 3.7 nights | about 8.1 nights | 9 W · |
| CPAP (heated humidifier on) | about 0.6 nights | about 1.3 nights | 56 W · |
| Refrigerator (full-size) | about 4.3 hours | about 9.2 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 15 hours | about 32 hours | 18 W · |
| Laptop (65W charger) | about 8.3 hours | about 18 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 13 full charges | about 29 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 | Anker SOLIX C800 X |
|---|---|---|
| AC-delivered capacity | 269 Whverified. Show sourceverified source~269 Wh usable via USB at 60W (Trusted Reviews)2026-07-04 | 580 Whverified. Show sourceverified source~580 Wh extracted at 1200W over 29 min (Trusted Reviews)2026-07-04 |
| Continuous power output | 300 W. Show sourceclaimed sourceankersolix.com ↗ | 1,200 W. Show sourceclaimed sourceankersolix.com ↗ |
| Surge power output | 600 W. Show sourceclaimed sourceankersolix.com ↗ | 1,600 W. Show sourceclaimed sourceankersolix.com ↗ |
| Max solar input | 100 W. Show sourceclaimed sourceankersolix.com ↗ | 300 W. Show sourceclaimed sourceankersolix.com ↗ |
| AC charge time (0–100%) | — | 58 min. Show sourceclaimed sourceankersolix.com ↗ |
| Weight | 4.1 kg. Show sourceclaimed sourceankersolix.com ↗ | 10.9 kg. Show sourceclaimed sourceankersolix.com ↗ |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗ | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗ |
Only show differences
- AC-delivered capacity269 Wh580 Wh
- Continuous power output300 W1,200 W
- Surge power output600 W1,600 W
- Max solar input100 W300 W
- AC charge time (0–100%)—58 min
- Weight4.1 kg10.9 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.
05 · Tracked street price
Price & fair-price verdict
Anker SOLIX C800 X
No street price observed yet.
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- Anker SOLIX C300 #2 of 8 in Best Under $300 · #2 of 6 in Best 300 Wh Stations
- Anker SOLIX C800 X #9 of 10 in Best Power Stations Under $500 · #9 of 10 in Fastest AC-Charging Power Stations
Quick answers
- Is the Anker SOLIX C300 better than the Anker SOLIX C800 X?
- Too close to call overall — choose by how and where you use it. No price tie-breaker today — choose based on fit and the sourced details.
- How are these two power stations compared?
- Both are scored by the BatteryRank formula across four pillars — power, trust, charging, and livability — over sourced specs, owner reputation, and durability. Capacity scoring uses battery-side usable watt-hours; this page separately shows estimated or measured AC-delivered capacity. Price is shown against each model's own history, and the score is price-independent.
- Which has more usable capacity, the Anker SOLIX C300 or Anker SOLIX C800 X?
- Use the capacity-truth section for the model-specific comparison. It separates rated battery energy from estimated or independently measured AC-delivered energy, so nameplate watt-hours are not mistaken for outlet runtime.
- Which has more AC output, the Anker SOLIX C300 or Anker SOLIX C800 X?
- The key-differences table compares continuous inverter output and surge output when both sourced readings exist. A missing input stays N/A and never creates a winner.
- Which is lighter, the Anker SOLIX C300 or Anker SOLIX C800 X?
- The key-differences table marks the lighter station only when both manufacturer-sourced weight readings are present. Open each model dossier for dimensions and the full portability context.
- Which is the better price today, the Anker SOLIX C300 or Anker SOLIX C800 X?
- The decision dashboard evaluates each timestamped street price against that model's own tracked history. Price is separate from the quality score, and no deal claim appears without sufficient history.
- How does runtime compare between the Anker SOLIX C300 and Anker SOLIX C800 X?
- The runtime table uses the same sourced device loads and each model's AC-delivered capacity. Results are planning estimates, not hands-on tests, and appear only when both models have enough data.
- Which model should I buy for my use case?
- Use the persona-fit section as a starting point, then confirm required output, runtime, charging, portability, and today's price. BatteryRank declares a use-case winner only when both sides have the needed inputs.
Keep deciding
- Full scorecard, specs & price for Anker SOLIX C300 →
- Full scorecard, specs & price for Anker SOLIX C800 X →
- See more alternatives to Anker SOLIX C300 →
- See more alternatives to Anker SOLIX C800 X →
- 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 →