The Anker SOLIX S2000 might not be ideal for camping, but if you’re after a midweight home backup solution it could be just the job. It stores plenty to back up lower-power essentials like a fridge or a home office, and can put out enough power to handle anything up to middling kitchen devices. With high efficiency and schedulable charge/discharge behaviour it’s also able to help you maximise off-peak power – its only real weakness is a comparative lack of USB ports.

• Exceptional value, especially if you’ll use it lots
• Excellent configurability
• Strong efficiency

• Just three USB ports

• 

• A midweight battery power station Anker’s SOLIX S2000 is aimed at backing up middling devices in the home; it’s ideal for IT equipment or even a fridge. It’s got loads of storage, but it doesn’t have the output to cope with very demanding appliances like kettles or washing machines.

• Very configurable You can set this up as a straightforward uninterruptible power supply (UPS), or use its smart scheduling features to make the most of cheap off-peak power.

A lot of battery power supplies are sold on the basis of portability, but the Anker SOLIX S2000 isn’t really chasing that market. It’s primarily designed as a home backup device – and one best-matched to mains-powered devices at that. It’s certainly got loads of features that make it suited to that role, from plenty of storage, through to the four mains output sockets divided between its front and back panels.

There are some other interesting things about the Anker SOLIX S2000. This is the first device I’ve tested to claim a 10,000-cycle battery life, which means in theory it’s capable of handling at least one full recharge/discharge cycle every day for 27 years. It also supports a range of charging modes and sources, helping you make the most of off-peak electricity or solar panels if you have them.

There are a few limitations it pays to understand from the outset, though. The S2000 stores 2000 watt hours (Wh) of power. That’s two kilowatt hours, roughly equivalent to running a two-slot toaster for a couple of hours. However, it’s limited to a 1500W output. As such, it’s got the oomph for fridges, IT equipment and even some midweight devices like that two-slot toaster, but it’s not up to the demands of running a kettle, dishwasher or washing machine.

Design and features

• Compact, but not overly portable
• Useful display and app
• Not the most generous selection of ports

You’d be forgiven for thinking the Anker SOLIX S2000 was a midi tower PC that had been bulking up in the gym. That impression’s helped by its upright stance, and a comparatively minimal front panel with a light smattering of sockets.

It has only three USB ports, the most powerful of which is a 100W USB-C connector: the other USB-C is rated only for 15W, while the USB-A is just 12W. Unusually, there’s no cigarette-style car charger output available, though you do get an XT-60 solar input rated for a fair 400W.

That’s a contrast with the AC ports, which are quite generous. Cleverly, given this device’s likely role, these are divided equally between front and back panels, offering a combination of rear-facing tidiness and front-facing convenience. Note, though, that the available 1500W AC output is split across all four, rather than available per socket.

As I mentioned, although the Anker SOLIX S2000 is relatively compact and light for a 2kWh power supply, it isn’t really designed for road trips. While you can lift it around the home using indented handles just under the front and rear of the top panel, these aren’t as practical as the chunky ones moulded into go-anywhere power supplies. There’s also no built-in light, although by no means all power stations have one.

Press the power button to wake the S2000 up and you’ll see it has a decent built-in display. This shows the batteries’ state of charge at a glance, along with how much power is flowing in and out of the station. Depending on the balance, it’ll also give you an estimation of how long remains before the batteries are full or empty.

This covers all the essentials, but most users are likely to want to connect the S2000 via Bluetooth or Wi-Fi to Anker’s app. This replicates all the information you see on the device’s screen, but adds extra details such as battery temperature, and an individual breakdown of the ports’ status. More importantly, it also gives you far greater control over the power station’s settings and charging behaviour, which I’ll cover in more detail below.

It’s important to understand a bit more about the S2000’s batteries. Almost all portable power stations rely on lithium iron phosphate (LFP) cells, which offer greater durability and better safety than earlier lithium-ion chemistries. What’s unusual here is that Anker brands the S2000’s LFP cells as ‘next-gen’, and says they’ll be capable of storing at least 60% of their rated capacity (1.2kWh, compared to 2kWh) after 10,000 charge cycles. That’s extraordinary, suggesting you could fully discharge and recharge the S2000 three times a day for nine years and still have life left in the batteries. Anker claims this power station is designed for a 15-year lifespan, and backs that up with its usual five-year warranty.

This long battery life means that, used to its fullest extent over many years, the Anker SOLIX S2000 will be exceptionally good value. We calculate a cost of ownership figure by dividing a power station’s price by the amount of energy you might expect it to store over its working lifetime – here that’s an incredible 18 megawatt hours. Buy the S2000 at the £849 launch price, use it to the maximum and it could cost you as little as 5p per kWh stored. That’s less than half of the lowest figure I’ve previously seen, though bear in mind you won’t benefit from it unless you use this supply beyond the 3000 or 6000 cycle life more commonly quoted for competing products.

• Charge from the mains, with optional vehicle and solar charging
• Full recharge in less than two hours

The Anker SOLIX S2000 doesn’t come with the necessary cables to connect solar panels or charge from a car, but both are available options. It’ll accept up to 400W of solar input, which means in ideal conditions it’ll need just over five hours to recharge. Connected to a car, you’d need more than 16 hours of driving to fully replenish it – standard 120W car power outlets aren’t particularly practical for supplies that store this much power.

That leaves mains recharging, and here you’re spoiled for choice. Anker’s supplies tend to offer a wide range of charging speeds: here it ranges from a healthy 1100W all the way down to a 100W trickle – I can’t particularly imagine where you might need that. If speed is everything, there’s an in-app slider to enable UltraFast Charging, which unlocks charging at 1500W.

In theory that could see you refilled in about an hour and 20 minutes, but it took nearer an hour and three quarters in my test – still plenty quick enough to fit within the shortest off-peak window. In contrast, charging at 100W would take nearly a whole day.

Battery power stations are usually at their most efficient towards the middle of their operating window, and that was certainly the case here. I measured the amount of energy it took to fully recharge the Anker SOLIX S2000 from empty at 200W, 500W, 1,100W, and at 1500W in UltraFast mode. At the latter, it consumed 2,407Wh, while at 500W it used a low of just 2,307Wh. Assuming that took the 2,000Wh batteries from empty to completely full, it equates to an efficiency of about 87%, which isn’t bad.

The Anker SOLIX S2000 defaults to standard UPS behaviour. When mains power is available it’ll recharge its own batteries and provide power to connected appliances. If the mains is lost, it’ll switch to battery power in less than 10 milliseconds. That’s great for straightforward backup, but if you’ve got an off-peak tariff you can configure Time of Use mode, in which the S2000 will recharge when it’s cheap, and provide power from its batteries during peak rate.

There’s also a custom mode allowing you to set charge and discharge times down to five-minute blocks – handy given that Anker’s app still doesn’t support time-of-use tariffs that start or finish on the half hour. In this mode you can also create periods where the battery neither charges nor discharges. That could be useful if you have rooftop solar and want to charge during off-peak, rely on battery power to get through dingy mornings and evenings, but fall back to bypass power to use up spare solar during the brightest part of the day.

You can combine the S2000’s charging modes with its ability to set a backup charge range for the battery, for example a maximum 80% and minimum 30%. In practice that lets you store cheap-rate power to use during the day, while holding back a portion (in this case 30%) of the battery to see you through a power cut. When the batteries are empty, or they reach the minimum you’ve configured, the station will seamlessly switch over to providing bypass power directly from the mains.

• Stable at maximum power
• Gently noisy on higher loads
• Good efficiency

We test every battery power station by connecting it up to the same constant loads, where supported: 200W, 500W, 1000W, 2000W and the maximum available output. With the Anker SOLIX S2000, I could test the first three plus its 1500W maximum. It behaved impeccably from 100% to empty on them all. It didn’t generate much noise at lower power levels, but there’s a slight wobble to the speed of its fans, making them difficult to tune out once they do begin to work harder.

As with my charging tests, when I measured how much energy the S2000 actually delivered at these fixed loads its efficiency peaked towards the middle, with an impressive high of 1899Wh (95% efficiency) at 500W. In fact, it delivered more than 1800Wh when discharged at any load up to 1,000W, falling to a low of 1,737Wh (87%) at maximum power. Calculated using the most efficient charging and discharging performance, the Anker SOLIX S2000 managed a round-trip efficiency of 82.3%, which is strong, if not the best I’ve seen.

I usually test power stations’ DC output efficiency by connecting up a constant 60W load to one of their USB-C ports. The S2000 powered this comfortably for hours with no significant heat buildup or fan activity. Unfortunately, the small power station that this test relies on died when I was emptying its battery mid-test, so I can’t put a figure on the S2000’s DC efficiency.

Should you buy it?

The Anker SOLIX S2000 is something of an oddball: it looks different, has an unusual blend of ports, and a similarly unusual pairing of plentiful storage with a middling power output. It’s efficient and compact, though, and gives you great control over exactly when, how, and how much it charges. That makes it perfect for its role as a midweight home backup device – just remember to turn off the Smart AC Output Mode if you’re intending to use it for a CPAP machine, as it might otherwise shut off the supply during periods of low power demand.

I used the S2000’s Time-of-Use mode to back up my essential tech devices: two network-attached storage drives, a modem, a router and a network switch. Together these consume from 40-200W, depending on how busy they are. With the S2000 set to charge to 80% overnight, discharge during peak hours and hold back 20% of the battery capacity as insurance against a power cut, I soon forgot it was there. All the time, though, it was banking cheap power at night for me to use during the day, while making sure the house would keep working for at least three or four hours if the mains power went down.

All of that makes this power station a great choice. However, if you like its value, but need a higher output, consider the VTOMAN FlashSpeed 2400. And if you need something with even more performance all-round, consider budgeting extra for the Bluetti Elite 400. Our guide to the best power stations has more choice, still.

We test every power station we review thoroughly over an extended period of time. We use standard tests to compare features properly. We’ll always tell you what we find. We never, ever, accept money to review a product.

Find out more about how we test in our ethics policy.

• We test with a variety of devices to see how long the battery will last.
• We test different charging methods to see how quickly the battery can be topped up.

	Anker SOLIX S2000 Review
Manufacturer	Anker
Quiet Mark Accredited	No
Battery	2000 Whr
Size (Dimensions)	208 x 282 x 323 MM
Weight	16.2 KG
ASIN	B0GY4TQ2P8
Release Date	2026
First Reviewed Date	25/09/2026
Battery type	Rechargeable
Battery technology	Lithium-ion
Battery size	AA
UK RRP	£849
USA RRP	$700
EU RRP	TBC
CA RRP	CA$849
AUD RRP	TBC