Guides · Updated 2026-11-02

Anker SOLIX C1000X vs Bluetti AC180 for keeping a fridge cold

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Short answer: Both will keep a typical modern fridge cold for about 15-16 hours on a full charge, and both have enough surge to start it. The Bluetti AC180 stores a little more energy; the Anker SOLIX C1000X is lighter and can add an expansion battery later.

Watts vs. watt-hours, in one minute

Watts (W) is how hard something pulls power right now, like how fast water flows from a tap. Watt-hours (Wh) is how much is stored in the battery, like how much water is in the bucket.

Runtime ≈ battery Wh × 0.85 ÷ watts used. The 0.85 covers energy lost turning battery power into wall-outlet power. Example: a 1,000 Wh battery running a 60 W fridge lasts about 1,000 × 0.85 ÷ 60 ≈ 14 hours.

How long will each run a fridge?

A modern full-size fridge uses about 150 W while its compressor runs, but it cycles on and off, so over a day it averages roughly 60 W. Add a Wi-Fi router, a lamp and a couple of phones and you are near 95 W.

Estimated hours running just the fridge (~60 W average)

Estimated hours running fridge + router + lamp + phones (~95 W average)

Specs side by side

	Anker SOLIX C1000X	BLUETTI AC180
Battery size (Wh)	1,056 Wh	1,152 Wh
Steady output	1,800 W	1,800 W
Surge / peak	2,400 W	2,700 W
Battery type	LiFePO4	LiFePO4
Warranty	5 yr	5 yr
Weight	28.44 lb	35.3 lb
Price on maker site	$499.99	$449
Cost per Wh	$0.47	$0.39

Specs and prices from each maker's product page, checked 2026-11-02. Prices change often.

Starting the fridge: surge

When a fridge compressor kicks on it can need well over 1,000 W for a split second. The C1000X lists 2,400 W of surge and the AC180 lists 2,700 W, so both have room to spare for a normal kitchen fridge.

What each does well

Anker SOLIX C1000X

Lighter at 28.4 lb, easier to carry from the garage.
Can grow to 2,112 Wh with an add-on battery.
Fast wall recharge (0-100% in about 58 minutes, per Anker).
Wi-Fi and Bluetooth app, 5-year warranty.

See it on Anker SOLIX's site

Bluetti AC180

Slightly more stored energy (1,152 Wh), about an extra hour on a fridge.
Highest surge of the two (2,700 W lifting mode).
Lower price per Wh on the maker site today.
LiFePO4 battery rated for 3,500+ cycles, 5-year warranty.

See it on Bluetti's site

Best for overnight fridge backup on a budget: Bluetti AC180, for the most watt-hours per dollar today.
Best for growing your setup later: Anker SOLIX C1000X, since you can add a second battery and it is easier to carry.
Either one is a solid choice for getting a fridge through a night-long outage. For multi-day outages, pair either with a solar panel or look at a 2,000 Wh station.

Common questions

Can a 1,000 Wh power station run a fridge?

Yes. A typical modern fridge averages about 60 W, so a 1,000 Wh station lasts roughly 14 hours, more if you keep the door closed.

Do I need to worry about surge?

A little. Fridges need a short burst when the compressor starts. Both of these stations list well over 2,000 W of surge, which covers a normal fridge.

How do I make it last longer?

Keep the door shut, set the fridge a degree or two warmer, and unplug it for a few hours at a time if food stays cold. A full freezer stays cold longer.

Runtimes are estimates (battery Wh × 0.85 ÷ watts). Real results vary with temperature, the age of your appliance and how often its compressor runs. Try your own mix in the calculator.