Specifications checked against manufacturer pages on 2026-08-23.
The Anker SOLIX C1000 (1,056 Wh, 1,800 W) and the Bluetti AC180 (1,152 Wh, 1,800 W), compared on the figures their makers publish. On the normalized ratios, the C1000 carries more per pound (37.1 Wh/lb vs 32.6 Wh/lb); the AC180 is rated for more cycles (3,500 vs 3,000).
In short. The C1000 leads on watt-hours per pound (37.1 Wh/lb vs 32.6 Wh/lb) and continuous watts per dollar (4.00 W/$ vs 3.61 W/$). The AC180 leads on rated cycle life (3,500 vs 3,000). 3 of 6 measures tie or are not comparable.
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Specifications, side by side
Numbered notes below the table give the source location or a caveat for figures that need one; check marks mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of its check date listed under Sources. UPS switchover is how long the outlets go dark when grid power drops.
| Specification | Anker SOLIX C1000 | Bluetti AC180 |
|---|---|---|
| Rated capacity | 1,056 Wh1 | 1,152 Wh2 ✓ |
| Usable capacity (calculated)* | 898–950 Wh | 979–1037 Wh |
| Continuous AC output | 1,800 W3 | 1,800 W4 |
| Surge output | No conventional surge stated (2,400 W boost mode)5 | No conventional surge stated (2,700 W boost mode)6 |
| Full recharge from wall | <60 min7 | Manufacturer does not state (0–80% in 45 min)8 |
| Cell chemistry | LiFePO49 | LiFePO410 |
| Rated cycle life | 3,000 cycles to 80%11 | 3,500+ cycles to 80%12 ✓ |
| UPS switchover | <20 ms13 | Manufacturer does not state |
| Expandable | Yes, up to 2,112 Wh14,15 | No16 |
| Max solar input | 600 W17 ✓ | 500 W18 |
| Max AC charging input | 1,300 W19 | 1,440 W20 ✓ |
| AC outlets | 621 ✓ | 422 |
| Highest USB-C port | 100 W23 | 100 W24 |
| App control | Yes25 | Yes26 |
| Stated noise | Manufacturer does not state | Manufacturer does not state |
| Warranty | 5 years27 | 5 years28 |
| Weight | 28.44 lb29 ✓ | 35.3 lb30 |
| Manufacturer list price when checked | $449.9931 ✓ | $49932 |
* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.
Notes on the figures
- C1000, rated capacity: 1056Wh
- AC180, rated capacity: 1,152Wh (AC180) / 1,440Wh (AC180P)
- C1000, continuous output: 1800W Pure Sine Wave
- AC180, continuous output: 4 x 120V/15A 1800W In Total
- C1000, surge: Anker labels 2,400 W as ‘SurgePad’, a mode that raises output for resistive loads such as heaters. It is not a conventional motor-start surge rating and should not be read as one.
- AC180, surge: The spec table labels this “Surge Power”, but the same 2,700 W figure is Bluetti’s Power Lifting Mode for resistive heating loads (FAQ Q1: “AC180 can run high-power heating devices up to 2,700W … Do NOT use this unit to run an air conditioner or washing machine.”). Treat as a boost mode for resistive loads; it is not a conventional motor-start surge rating and should not be read as one.
- C1000, full recharge: Stated as ‘a full charge in under an hour’; 60 minutes is the upper bound, not a precise figure.
- AC180, recharge: Bluetti publishes a 0–80% time (45 minutes), not a full-charge time.
- C1000, cell chemistry: LiFePO4 (Lithium Iron Phosphate)
- AC180, cell chemistry: LiFePO₄ (Lithium Iron Phosphate)
- C1000, cycle life: 3,000 (80% Capacity)
- AC180, cycle life: 3,500+ Cycles to 80% Original Capacity
- C1000, UPS switchover: Stated as under 20 ms; the manufacturer gives an upper bound, not a measured figure.
- C1000, expandable: Up to Max. 2112Wh Capacity with Expansion Battery (Coming soon.)
- C1000, expandable: The expansion battery was marked ‘coming soon’ on the product page when checked; confirm it is actually on sale before counting on it.
- AC180, expandable: Bluetti’s B-series batteries can charge the AC180 but do not extend its capacity as a single system.
- C1000, solar input: Solar Input Recharge: 600W Max, 11-60V MPPT
- AC180, solar input: Solar Input: 500W Max., VOC 12-60VDC, 10A
- C1000, AC input: AC Input Recharge: 1,300W Max
- AC180, AC input: Turbo Mode figure from SPECS > INPUT.
- C1000, AC outlets: AC Outlets: 6×
- AC180, AC outlets: From SPECS > OUTPUT.
- C1000, USB-C: Two USB-C ports; highest single port is 100W.
- AC180, USB-C: From SPECS > OUTPUT.
- C1000, app: Wireless Connection for App: Wi-Fi and Bluetooth
- AC180, app: Bluetooth only; the page does not claim Wi-Fi.
- C1000, warranty: Warranty: 5-Year Warranty
- AC180, warranty: From SPECS > GENERAL.
- C1000, weight: Net Weight: 28.44 lb / 12.9 kg
- AC180, weight: Bluetti’s page gives 35.3 lb in the spec table and 37 lb in the description; we use the spec table.
- C1000, price: Manufacturer list price when checked; a $20 code brought it to $429.99 that day.
- AC180, price: Manufacturer price when checked; no separate list price was shown.
The same specs, normalized
Ratios, so the bigger unit does not win by default.
| Measure | C1000 | AC180 |
|---|---|---|
| Cost per watt-hour | $0.43/Wh | $0.43/Wh |
| Watt-hours per pound | 37.1 Wh/lb ✓ | 32.6 Wh/lb |
| Surge headroom | Not comparable — the C1000 figure is a boost-mode rating, not a motor-start surge. | |
| Recharge rate | Not comparable — Bluetti does not state a full-recharge time for the AC180. | |
| Rated cycle life | 3,000 | 3,500 ✓ |
| Continuous watts per dollar | 4.00 W/$ ✓ | 3.61 W/$ |
Definitions and direction of each ratio: How we verify. A recharge rate marked ≥ is computed from an upper-bound recharge time, so the true rate is at least that figure; no check mark on that row.
What each one runs, for how long
| Appliance | C1000 | AC180 |
|---|---|---|
| Full-size refrigerator 150 W, 900 W start, 35% duty · eff. 80%–87% |
16–17 hr | 18–19 hr |
| Mini fridge 70 W, 400 W start, 30% duty · eff. 70%–82% |
35–41 hr | 38–45 hr |
| CPAP without humidifier 40 W · eff. 70%–82% |
18–22 hr | 20–24 hr |
| CPAP with heated humidifier 95 W · eff. 80%–87% |
8.9–9.7 hr | 9.7–10.5 hr |
| Gas furnace blower 400 W, 1600 W start, 40% duty · eff. 85%–90% |
5.6–5.9 hr | 6.1–6.5 hr |
| 1/3 hp sump pump 500 W, 1800 W start, 15% duty · eff. 85%–90% |
12–13 hr (start-up not assessed) | 13–14 hr (start-up not assessed) |
| Router and modem 20 W · eff. 70%–82% |
37–43 hr | 40–47 hr |
| Laptop 60 W · eff. 70%–82% |
12–14 hr | 13–16 hr |
| 1500W space heater 1500 W · eff. 82%–88% |
about 0.6 hr | 0.6–0.7 hr |
Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating. “Start-up not assessed” appears where the start-up draw meets or exceeds the unit’s continuous rating and the unit states no conventional motor-start surge to check it against (AC180 and C1000); the hours assume the motor starts.
What the differences mean
Weight for the capacity. The C1000 carries 37.1 Wh/lb against 32.6 Wh/lb for the AC180. Both are two-hands-and-a-flat-surface units; the difference matters if the unit moves between car, porch and basement.
Cycle rating. The AC180 is rated for 3,500 cycles against 3,000 for the C1000, both to the same remaining-capacity threshold — otherwise we would not compare them. At one full cycle a week the difference is measured in years, not months; at occasional outage use neither limit is reached.
Output for the money. 4.00 W/$ on the C1000 against 3.61 W/$ on the AC180: if what you need is to run a high-draw appliance rather than to run a small one for days, this ratio is the one to read.
Which one, and for whom
On normalized measures the C1000 leads on watt-hours per pound (37.1 Wh/lb vs 32.6 Wh/lb) and continuous watts per dollar (4.00 W/$ vs 3.61 W/$). The AC180 answers on rated cycle life (3,500 vs 3,000). What decides it is the figure your outage actually tests:
- CPAP overnight. Switchover: C1000 under 20 ms, AC180 no UPS figure stated. A 40 W CPAP runs roughly 18–22 hr on the C1000 and 20–24 hr on the AC180. Both run the night; the AC180 states no UPS figure, which matters more overnight than the hour difference.
- Keeping a refrigerator cold. Start-up comes first. The C1000 states a boost figure rather than a motor-start surge rating; the AC180 states a boost figure rather than a motor-start surge rating. A full-size refrigerator needs about 900 W to start.
- A multi-day outage with a generator or solar to recharge from. Full recharge: C1000 under 60 min, AC180 0–80% in 45 min (no full-charge time stated). These are not comparable: Bluetti states no full-charge time for the AC180.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
Related reading
A 1,056–1,152 Wh battery cannot do what a gasoline generator does — the runtime table shows a 1,500 W space heater emptying either unit in 0.6–0.7 hr — but it also cannot poison a household. Our CPSC revision matrix tracks how the official count of generator carbon-monoxide deaths has changed across report editions, and this page puts every verified unit on the same refrigerator scenario.
Other comparisons with these models
Ordering before a storm? Check the arrival date at checkout — a unit that ships tomorrow can beat a better one that ships next week. Amazon Prime includes fast delivery on eligible items and starts with a free trial; we earn a commission if you join.
Sources and method
- Anker SOLIX C1000: manufacturer product page, checked 2026-08-23.
- Bluetti AC180: manufacturer product page, checked 2026-08-23.
Published specifications only; no bench tests. Method: How we verify. More: Comparisons.