The Anker SOLIX S2000 keeps your fridge running for 35 hours, and there's a big Prime Day discount

Power stations are becoming a staple of any smart home setup, since you’ll need to keep all the essential tech running when the grid goes down. If you’re looking for a reliable home backup solution, Anker SOLIX, the go-to favorite for charging, power, and device accessories, has something that fits the bill.

The Anker SOLIX S2000 is the debut model in the new S-Series, built on a foundation of long-lasting power and living up to its slogan, ‘Long-lasting Power Redefined,’ to serve as more than just a standard home backup solution. It can keep a full-size refrigerator running for up to 35 hours on a single charge, and that’s just one of its many highlights. Even though the S2000 launched very recently, Anker is already offering a massive discount on one of the longest-lasting 2 kWh home backup options around. Here’s what you need to know.

The new S-Series is made for long-lasting home backup

Anker SOLIX is one of the biggest names in battery storage and power delivery, and the S-Series takes that expertise to the next level. While a lot of power stations try to do too much, from being a camping battery to a job-site tool, the S-Series is designed exclusively for long-lasting home backup.

The key selling point here is the runtime, since losing power at home usually involves an emergency that can take hours, or even days, to fix. Anker calls it “True Runtime” and focuses less on the spec sheet and more on what it can deliver.

While all batteries lose energy to idle drain and conversion losses before it reaches your gadgets, the Anker SOLIX S2000 is built to deliver more of what it stores. This translates into about 20% more usable runtime than competing 2kWh units, and the S2000 carries TÜV SÜD A+ Runtime certification, the highest rating available.

The number Anker showcases is 35 hours of continuous refrigerator backup on a single charge. That is a long time, long enough to ride out most outages without losing a freezer full of food.

The technology that makes that runtime possible is OptiSave™. It is a system-level approach to reducing wasted energy, specifically targeting two often-overlooked areas: idle power consumption and light-load efficiency.

Even when a power station sits idle, it still draws power just to keep itself running. On a typical unit, idle draw is between 10W and 20W, which can add up to a significant loss over time. OptiSave™ reduces the S2000’s idle consumption to just 6W, while boosting efficiency at light loads by 10% (maintaining over 90% efficiency).

By minimizing energy waste during both idle and low-power states, the S2000 delivers up to 20% longer runtime than other 2kWh power stations, keeping your essentials running longer when outages hit.

Built to last and small enough to fit anywhere

Of course, another important feature of a home backup system is longevity. The S2000 uses 314Ah LiFePO4 battery cells rated for 10,000 charge cycles to 60% capacity, which works out to a 15-year service life under typical use. That is almost double the industry average, and is perfect for anyone who would rather invest once in something that lasts than replace a cheaper unit every few years.

There is also integrated UPS functionality, with switchover happening in under 10 milliseconds when an outage hits. That speed matters, especially if you’re running sensitive devices like CPAP machines, home networking gear, and security systems, with a fast switchover keeping them running as if nothing happened.

One of the more surprising things about the Anker SOLIX S2000 is also how small it is. It measures 8.19 by 11.1 by 12.7 inches, which is about 30% smaller than similar products, and more akin to the size of a 1kWh unit. And at 35.7 pounds, it is light enough to carry on your own and move where you need it.

But it’s not lacking in outlets. The S2000 has rear-facing AC outlets for larger electronics and front ports for charging phones and other small devices. You get a generous spread of outputs, with multiple AC outlets plus USB-C and USB-A ports, so it can handle several appliances at once.

Solar-ready and quick to refill

When you do need to top it back up, the S2000 accepts up to 400W of solar input, enough for a full recharge over a typical day of sunlight. That makes it an excellent option for extended outages, where you can keep the battery charged by the sun rather than waiting for the grid to come back. If you are charging from a wall outlet, it reaches 80% in about 1.2 hours, so it is ready to go again quickly after an outage passes.

Get the Anker SOLIX S2000 now!

If you are the kind of homeowner who worries about what will happen to your fridge, your medical devices, or your security setup the next time a storm knocks out power, the S2000 is built for exactly that scenario. It is a well-engineered home backup unit that’s designed to last, has plenty of output options, and slots neatly into any smart home.

The S2000 launched on June 2, and its first major sale is already underway. For Prime Day, from June 23 to 26, you will enjoy a massive discount on the Anker SOLIX S2000, bringing its price down to just $599.