Anker SOLIX C300
62BatteryRank score · Balanced
$299.99as of
High price← CompareCheck price on Amazon 
Check price on Amazon
Anker SOLIX C300 vs EnginStar R300
Decision readout
Better station
Compare the sourced facts — a complete score is not available for both stations.
Better buy today
No price tie-breaker today — choose based on fit and the sourced details.
EnginStar R300
N/ABatteryRank score
$129.98as of
Insufficient price historyWhat changes the decision
- Home backup: Anker SOLIX C300 — more AC-delivered capacity
- Camping & RV: EnginStar R300 — lighter and easier to carry
01 · Score evidence
Score breakdown
62
Anker SOLIX C300
Overall
N/A
EnginStar R300
51
POWER
Anker SOLIX C300 +7
44
Battery-side usable capacity and how much you can run at once.
77
TRUST
Incomplete data
N/A
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
N/A
Wall and solar recharge speed.
58
LIVABILITY
EnginStar R300 +14
72
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
EnginStar R300
Rated (on the box)
296 Wh. Show source
claimed sourcem.media-amazon.com ↗2026-07-27The marketing number — total cell capacity.
AC delivered (est.)
226 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 | EnginStar R300 | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 3.7 nights | about 3.1 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 3.6 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 15 hours | about 13 hours | 18 W · |
| Laptop (65W charger) | about 8.3 hours | about 7.0 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 13 full charges | about 11 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 | EnginStar R300 |
|---|---|---|
| AC-delivered capacity | 269 Whverified. Show sourceverified source~269 Wh usable via USB at 60W (Trusted Reviews)2026-07-04 | 226 Whest.. Show sourceestimated sourcem.media-amazon.com ↗2026-07-27 |
| Continuous power output | 300 W. Show sourceclaimed sourceankersolix.com ↗ | 300 W. Show sourceclaimed sourcem.media-amazon.com ↗ |
| Surge power output | 600 W. Show sourceclaimed sourceankersolix.com ↗ | 500 W. Show sourceclaimed sourcem.media-amazon.com ↗ |
| Max solar input | 100 W. Show sourceclaimed sourceankersolix.com ↗ | — |
| Weight | 4.1 kg. Show sourceclaimed sourceankersolix.com ↗ | 2.95 kg. Show sourceclaimed sourcem.media-amazon.com ↗ |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗ | — |
Only show differences
- AC-delivered capacity269 Wh226 Wh
- Surge power output600 W500 W
- Max solar input100 W—
- Weight4.1 kg2.95 kg
- Rated cycle life3,000 cycles—
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
EnginStar R300
$129.98as of Insufficient price history
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- Anker SOLIX C300 #4 of 8 in Quietest Power Stations · #4 of 10 in Best 300 Wh Stations
Quick answers
- Is the Anker SOLIX C300 better than the EnginStar R300?
- Compare the sourced facts — a complete score is not available for both stations. No price tie-breaker today — choose based on fit and the sourced details.
- Which has more usable capacity, the Anker SOLIX C300 or EnginStar R300?
- The Anker SOLIX C300, by 43 Wh — 269 Wh versus 226 Wh, a 19% advantage. At a 60 W load that is roughly 0.7 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 EnginStar R300?
- Neither — both are rated 300 W continuous, so any load one can run, the other can too. Surge headroom follows the same order: 600 W against 500 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the Anker SOLIX C300 and EnginStar R300?
- On the same sourced load — a refrigerator (full-size) — the Anker SOLIX C300 runs longer: 4.3 hours against 3.6. 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 EnginStar R300?
- The EnginStar R300, by 1.1 kg (3 kg versus 4.1 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 Anker SOLIX C300 for home backup; the EnginStar R300 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 EnginStar R300 →
- See more alternatives to Anker SOLIX C300 →
- See more alternatives to EnginStar R300 →
- 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 →