Anker SOLIX C1000 vs C1000 Gen 2: what changed, and which to buy

Anker sells two 1 kWh stations with almost the same name. The C1000 Gen 2 is the newer one. The original C1000 is still on Anker's site and in stores, and it is the one most older comparisons are about. Here is what changed, from Anker's own pages.

We compared these from Anker's published specs; we haven't tested them. Figures were checked on October 30, 2026. Anker changes bundles and specs often, so confirm on the listing before you buy.

Anker SOLIX C1000 vs C1000 Gen 2: spec table

Spec	C1000 (original)	C1000 Gen 2
Battery	1,056 Wh	1,024 Wh
AC output (continuous)	1,800 W	2,000 W
Surge / peak	2,400 W (SurgePad)	3,000 W peak
Battery type	LiFePO4	LiFePO4
Cycle rating	3,000 cycles to 80%+	4,000 cycles to 80%+
AC charging	1,300 W max, about 58 min to 100%	1,200 W standard; 1,600 W with UltraFast Charging, 100% in 49 min
Max solar input	600 W (11-60 V)	600 W (60 V max), full in about 1.8 h with 600 W
UPS switchover	Listed as 20 ms in Anker's Gen 2 comparison table	10 ms
Expandable	Yes, up to 2,112 Wh	No
Screen	No LCD (per Anker's comparison table)	LCD screen
Size	14.8 x 8.07 x 10.5 in	15.12 x 8.19 x 9.61 in
Weight	28.44 lb	24.9 lb
Warranty	5 years	Not shown on the page we checked; see the listing

Two notes on the numbers. First, Anker's own Gen 2 comparison table lists the original C1000's output as "3,000 W peak", while the original's spec sheet says 2,400 W surge. We use the spec sheet figure. Second, UltraFast Charging only reaches full speed when the battery is above about 68 F (20 C), according to Anker's FAQ. In a cold garage, expect slower charging.

What it means in practice

• Run time: about the same. The difference is 32 Wh. Hours = Wh x 0.85 / watts, so a 52 W fridge runs roughly 17 hours on either (see can a power station run a refrigerator).
• Starting motors: Gen 2's 3,000 W peak and 2,000 W continuous give more room for a fridge compressor, a pump or a power tool than the original's 1,800 W and 2,400 W. Both are 120 V only.
• Charging: if you will recharge from the wall during an outage window or between trips, Gen 2's 49-minute figure is the fastest of the two. Solar input is the same 600 W cap. See how long a power station takes to charge.
• Computers and CPAP: Gen 2 lists a 10 ms switchover. See our CPAP all night guide for sizing.
• Carrying: about 3.5 lb lighter. Not a big change, but noticeable on stairs.

The one reason to buy the original C1000

Expansion. Anker's Gen 2 page says it does not expand, and for people who need more capacity it recommends the original C1000. The original's page lists an expansion battery to reach 2,112 Wh. If you might want 2 kWh later without replacing the station, the original is the one that can do that. If you only ever want 1 kWh, Gen 2 is the better buy on most numbers.

Which should you buy?

Choose the C1000 Gen 2 if the two listings are close in price and you want a single 1 kWh station: more output, faster charging, longer cycle rating, a lower UPS switchover time and less weight.

Choose the original C1000 if you want to add a battery later, or if you find it clearly cheaper and your loads fit inside 1,800 W.

Compare both to other 1 kWh stations in Jackery 1000 v2 vs Anker C1000 vs BLUETTI Elite 100 V2. Shopping around Black Friday (November 27)? See the no-price Black Friday power station guide.

Quick buying checklist

1. Read the title. "C1000", "C1000X" and "C1000 Gen 2" are not the same product. Check capacity (1,056 Wh vs 1,024 Wh) and output (1,800 W vs 2,000 W) in the listing.
2. Check what is in the box. Many listings bundle panels, an alternator charger or an extra battery.
3. Add up your watts and check them against output and peak.
4. Check the warranty and whether registration is needed.

Where to buy

• Anker SOLIX C1000 Gen 2 on Amazon
• Anker SOLIX C1000 on Amazon

Frequently asked questions

Is the Anker SOLIX C1000 Gen 2 better than the C1000?

On Anker's numbers, yes on most: higher output, longer cycle rating, faster charging, 10 ms UPS and lighter. The exception is expansion, which only the original has.

What is the Anker SOLIX C1000X?

Anker's current product page for the original C1000 is titled "C1000X". It lists 1,056 Wh and 1,800 W. Google and Amazon searches use C1000X for it, so treat C1000X and the original C1000 as the same 1,056 Wh model unless the listing says otherwise.

Can the C1000 Gen 2 be expanded?

No. Anker's FAQ says it has no expansion feature, in exchange for lower weight and size.

How long does the C1000 Gen 2 take to charge?

Anker lists 100% in 49 minutes on AC with UltraFast Charging enabled in the app, and says it slows when the battery is cold. Standard AC input is 1,200 W.

Can it run a fridge or a space heater?

A fridge, yes (check surge). A 1,500 W space heater would empty 1,024 Wh in well under an hour, so use small heated blankets instead.

If you recharge from a gas generator, run it outdoors only, 20+ feet from the house, away from windows and doors. Read our carbon monoxide guide.