Anker SOLIX C800 X
63BatteryRank score · Balanced
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Anker SOLIX C800 X vs EcoFlow RIVER 2 Max 500
Decision readout
Better station
Anker SOLIX C800 X leads by 15 points overall.
EcoFlow RIVER 2 Max 500
48BatteryRank score · Limited
What changes the decision
- Home backup: Anker SOLIX C800 X — more AC-delivered capacity and higher AC output
- Camping & RV: EcoFlow RIVER 2 Max 500 — lighter and easier to carry
01 · Score evidence
Score breakdown
63
Anker SOLIX C800 X
Overall
48
EcoFlow RIVER 2 Max 500
57
POWER
Anker SOLIX C800 X +24
33
Battery-side usable capacity and how much you can run at once.
72
TRUST
Anker SOLIX C800 X +8
64
Owner reputation, safety record, warranty, and build durability.
79
CHARGING
Anker SOLIX C800 X +19
60
Wall and solar recharge speed.
17
LIVABILITY
EcoFlow RIVER 2 Max 500 +47
64
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 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
EcoFlow RIVER 2 Max 500
Rated (on the box)
512 Wh. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗2026-07-27The marketing number — total cell capacity.
AC delivered (est.)
435 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 C800 X | EcoFlow RIVER 2 Max 500 | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 8.1 nights | about 6.0 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.3 nights | about 1.0 nights | 56 W · |
| Refrigerator (full-size) | about 9.2 hours | about 6.9 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 32 hours | about 24 hours | 18 W · |
| Laptop (65W charger) | about 18 hours | about 13 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 29 full charges | about 21 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 C800 X | EcoFlow RIVER 2 Max 500 |
|---|---|---|
| AC-delivered capacity | 580 Whverified. Show sourceverified source~580 Wh extracted at 1200W over 29 min (Trusted Reviews)2026-07-04 | 435 Whest.. Show sourceestimated sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗2026-07-27 |
| Continuous power output | 1,200 W. Show sourceclaimed sourceankersolix.com ↗ | 500 W. Show sourceclaimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗ |
| Surge power output | 1,600 W. Show sourceclaimed sourceankersolix.com ↗ | 1,000 W. Show sourceclaimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗ |
| Max solar input | 300 W. Show sourceclaimed sourceankersolix.com ↗ | 220 W. Show sourceclaimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗ |
| AC charge time (0–100%) | 58 min. Show sourceclaimed sourceankersolix.com ↗ | — |
| Weight | 10.9 kg. Show sourceclaimed sourceankersolix.com ↗ | 6.1 kg. Show sourceclaimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗ |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗ | 3,000 cycles. Show sourceclaimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗ |
Only show differences
- AC-delivered capacity580 Wh435 Wh
- Continuous power output1,200 W500 W
- Surge power output1,600 W1,000 W
- Max solar input300 W220 W
- AC charge time (0–100%)58 min—
- Weight10.9 kg6.1 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 C800 X #8 of 10 in Best Power Stations for Photographers & Drones
- EcoFlow RIVER 2 Max 500 #2 of 4 in Best 500 Wh Stations · #10 of 10 in Fastest AC-Charging Power Stations
Quick answers
- Is the Anker SOLIX C800 X better than the EcoFlow RIVER 2 Max 500?
- Anker SOLIX C800 X leads by 15 points overall.
- Which has more usable capacity, the Anker SOLIX C800 X or EcoFlow RIVER 2 Max 500?
- The Anker SOLIX C800 X, by 145 Wh — 580 Wh versus 435 Wh, a 33% advantage. At a 60 W load that is roughly 2.4 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 C800 X or EcoFlow RIVER 2 Max 500?
- The Anker SOLIX C800 X: 1,200 W versus 500 W continuous. That gap matters only if a load sits between the two numbers — below 500 W both run it, above 1,200 W neither does. Surge headroom follows the same order: 1,600 W against 1,000 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the Anker SOLIX C800 X and EcoFlow RIVER 2 Max 500?
- On the same sourced load — a refrigerator (full-size) — the Anker SOLIX C800 X runs longer: 9.2 hours against 6.9. 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 C800 X or EcoFlow RIVER 2 Max 500?
- The EcoFlow RIVER 2 Max 500, by 4.8 kg (6.1 kg versus 10.9 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 C800 X for home backup; the EcoFlow RIVER 2 Max 500 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 C800 X →
- Full scorecard, specs & price for EcoFlow RIVER 2 Max 500 →
- See more alternatives to Anker SOLIX C800 X →
- See more alternatives to EcoFlow RIVER 2 Max 500 →
- 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 →