Anker SOLIX C800 X
63BatteryRank score · Balanced
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Anker SOLIX C800 X vs Bluetti AC50B
Decision readout
Better station
Anker SOLIX C800 X leads by 23 points overall.
Bluetti AC50B
40BatteryRank score · Limited
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What changes the decision
- Home backup: Anker SOLIX C800 X — more AC-delivered capacity and higher AC output
- Camping & RV: Bluetti AC50B — lighter and easier to carry
By the BatteryRank Engineering Team
01 · Score evidence
Score breakdown
63
Anker SOLIX C800 X
Overall
40
Bluetti AC50B
57
POWER
Anker SOLIX C800 X +36
21
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 +21
58
Wall and solar recharge speed.
17
LIVABILITY
Bluetti AC50B +33
50
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.com2026-07-04https://www.ankersolix.com/products/b1755112The 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
Bluetti AC50B
Rated (on the box)
448 Wh. Show source
claimed sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50bThe marketing number — total cell capacity.
AC delivered (est.)
381 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 | Bluetti AC50B | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 8.1 nights | about 5.3 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.3 nights | about 0.9 nights | 56 W · |
| Refrigerator (full-size) | about 9.2 hours | about 6.0 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 32 hours | about 21 hours | 18 W · |
| Laptop (65W charger) | about 18 hours | about 12 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 29 full charges | about 19 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 | Bluetti AC50B |
|---|---|---|
| AC-delivered capacity | 580 Whverified. Show sourceverified source~580 Wh extracted at 1200W over 29 min (Trusted Reviews)2026-07-04 | 381 Whest.. Show sourceestimated sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50b |
| Continuous power output | 1,200 W. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | 700 W. Show sourceclaimed sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50b |
| Surge power output | 1,600 W. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | — |
| Max solar input | 300 W. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | 200 W. Show sourceclaimed sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50b |
| AC charge time (0–100%) | 58 min. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | — |
| Weight | 10.9 kg. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | 6.7 kg. Show sourceclaimed sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50b |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com2026-07-04https://www.ankersolix.com/products/b1755112 | 3,000 cycles. Show sourceclaimed sourcesupport.bluettipower.com2026-07-27https://support.bluettipower.com/en-us/products/ac50b |
Only show differences
- AC-delivered capacity580 Wh381 Wh
- Continuous power output1,200 W700 W
- Surge power output1,600 W—
- Max solar input300 W200 W
- AC charge time (0–100%)58 min—
- Weight10.9 kg6.7 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 #7 of 10 in Best Power Stations for Photographers & Drones
- Bluetti AC50B #4 of 4 in Best 500 Wh Stations · #9 of 10 in Fastest AC-Charging Power Stations
Quick answers
- Is the Anker SOLIX C800 X better than the Bluetti AC50B?
- Anker SOLIX C800 X leads by 23 points overall.
- Which has more usable capacity, the Anker SOLIX C800 X or Bluetti AC50B?
- The Anker SOLIX C800 X, by 199 Wh — 580 Wh versus 381 Wh, a 52% advantage. At a 60 W load that is roughly 3.3 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 Bluetti AC50B?
- The Anker SOLIX C800 X: 1,200 W versus 700 W continuous. That gap matters only if a load sits between the two numbers — below 700 W both run it, above 1,200 W neither does. Only the Anker SOLIX C800 X publishes a sourced surge figure (1,600 W); the Bluetti AC50B has no sourced surge figure, so startup capability is only half-answered here — check the missing side before planning around a motor or compressor load.
- How does runtime compare between the Anker SOLIX C800 X and Bluetti AC50B?
- On the same sourced load — a refrigerator (full-size) — the Anker SOLIX C800 X runs longer: 9.2 hours against 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 C800 X or Bluetti AC50B?
- The Bluetti AC50B, by 4.2 kg (6.7 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 Bluetti AC50B 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 Bluetti AC50B →
- See more alternatives to Anker SOLIX C800 X →
- See more alternatives to Bluetti AC50B →
- 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 →