Anker SOLIX S5000: a home energy reserve on wheels

What it is

The power cuts out, and the light stays on. The Anker SOLIX S5000 is a portable power station designed to double as a home backup battery. In an outage it switches over in 10 ms, much like an uninterruptible power supply, and keeps running whatever is plugged into it.

It connects in three ways: through a transfer switch, through an inlet box or directly to appliances. It can therefore back up part of the house, or more simply power a fridge, a computer and a lamp.

According to the brand, its battery stores 5,024 Wh. This capacity can be expanded from 5 to 30 kWh with up to 5 extra batteries. It is aimed at a household that wants to keep electricity during an outage, or that already generates its own power with solar panels and is looking for somewhere to store it.

Despite its 44 kg (97 lb), it can be moved: the brand lists wheels, a telescopic handle and a pedal. Anker SOLIX announced the S5000 in October 2026 as an upcoming model, with registration open before launch.

Why it exists

A power cut means a fridge that warms up, a freezer that thaws and a mobile phone that can’t be recharged. The S5000 is meant to cover those hours. Anker claims it can power a house for 48 hours and that it runs 99% of household appliances.

The mobile app shows how the brand sees this use. It lets you monitor the station remotely, recharge it ahead of a storm and schedule outages. You prepare the reserve before the grid fails.

The second issue is bulk. A reserve of several kilowatt-hours is heavy and takes up space. Anker presents the S5000 as the smallest and lightest 5 kWh station.

What matters

High output power. The S5000 delivers 4,500 W continuously and peaks at 8,000 W. The peak is for starting motor-driven appliances, such as a fridge compressor or a pump, which need a brief surge. Continuous power sets how many appliances can run together. According to the brand, those 4,500 W remain available with the expansion batteries.

Two output voltages. The station outputs 120 V and 240 V. On the front you will find NEMA 5-20R, L14-30R and TT-30R sockets. The brand lists four NEMA 5-20 sockets, a 3,600 W TT-30 and a 4,500 W L14-30 at 240 V. On the USB side, the USB-C2 output provides up to 100 W, enough to power a laptop. The USB-A (12 W) and USB-C1 (15 W) outputs serve small devices, with 18 W in total between the two.

Lithium iron phosphate cells. The battery uses 314 Ah LFP cells. It keeps 80% of its capacity after 6,000 cycles and 60% after 10,000 cycles. A station that is recharged every day, from the sun for example, racks up cycles quickly. These two figures determine how many years it keeps most of its reserve.

Fast, varied recharging. The S5000 offers 6 charging modes. A full recharge, from 0 to 100%, takes 99 minutes. According to the brand, with a 4,500 W source at 240 V it takes 64 minutes to reach 80%. At 240 V, the mains input accepts up to 4,500 W. At 120 V, it is limited to 1,800 W. In practice, a weather warning in the morning leaves plenty of time to fill the battery before evening.

A real solar input. The station has two solar inputs. The first, low-voltage, runs from 11 to 60 V and accepts up to 1,000 W. The second, high-voltage, runs from 16 to 165 V and goes up to 2,000 W. The brand states up to 3,000 W of solar in total. A solar installation of that size can power the house by day and fill the reserve for the night.

Low idle consumption. A station that is switched on draws power even when nothing is plugged in. For the S5000, that draw is 8.8 W at 120 V and 13.7 W at 240 V. According to the brand, the battery therefore lasts up to 21 days on standby at 120 V and 14 days at 240 V. Efficiency reaches 96% at a 1,000 W load, and 90.5% at full load according to the brand. For a backup reserve that sometimes waits weeks before it is needed, this is what counts.

Day to day

The S5000 measures 27 × 56 × 39 cm (10.6 × 22.0 × 15.2 in), for a volume of 58 litres according to the brand. At 44 kg, it cannot be carried at arm’s length. You pull it along on its wheels by the telescopic handle, and the pedal helps tip it.

To recharge it, the brand lists the mains, solar panels, a vehicle, a generator, or a combination of these sources. It has an input dedicated to the Anker SOLIX Smart Generator. According to the brand, generators from other manufacturers go through a bypass mode: up to 1,800 W from a 120 V generator, and 4,500 W from a 240 V source. The brand also states that the 240 V output stays active while recharging at 120 V.

The station runs at 30 dB. It can therefore stay in a living area without the noise of a fan.

As for temperatures, it discharges from -20 °C to 40 °C (-4 °F to 104 °F). Charging, however, needs at least 0 °C (32 °F) and no more than 40 °C. In an unheated garage in winter, the S5000 can therefore power appliances. To recharge it, you need a frost-free room.

The mobile app lets you monitor the station remotely, start a recharge ahead of a storm and schedule outages.

Technical specifications

Feature	Value
Battery capacity	5,024 Wh (brand claim)
Expandable capacity	5 to 30 kWh with up to 5 extra batteries
Output power	4,500 W rated, 8,000 W peak
Power with expansion batteries	4,500 W rated maintained (brand claim)
Output voltages	120 V / 240 V
Cells	LFP (lithium iron phosphate), 314 Ah
Lifespan to 80% capacity	6,000 cycles
Lifespan to 60% capacity	10,000 cycles
Charging modes	6
Full recharge	0 to 100% in 99 minutes
Recharge with a 4,500 W source at 240 V	64 minutes to 80%, 99 minutes to 100% (brand claim)
Mains input at 240 V	4,500 W max.
Mains input at 120 V	1,800 W max. (under 3 h when the current exceeds 12 A)
Low-voltage solar input	11 to 60 V, 17 A max., 1,000 W max.
High-voltage solar input	16 to 165 V, 17 A max., 2,000 W max.
Total solar power	Up to 3,000 W across two inputs (brand claim)
Generator in bypass mode	Up to 1,800 W from a 120 V generator, 4,500 W from a 240 V source (brand claim)
Output sockets	4 × NEMA 5-20, 1 × TT-30 (3,600 W), 1 × L14-30 at 240 V (4,500 W) (brand claim)
USB-A	5 V, 2.4 A (12 W max.)
USB-C1	5 V, 3 A (15 W max.)
USB-A + USB-C1	5 V, 3.6 A (18 W max.)
USB-C2	Up to 20 V, 5 A (100 W max.)
Idle consumption	8.8 W at 120 V, 13.7 W at 240 V
Switchover in an outage	10 ms
Noise level	30 dB
Efficiency at 1,000 W	96%
Efficiency at full load (4,500 W)	90.5% (brand claim)
Standby autonomy	Up to 21 days at 120 V, 14 days at 240 V (brand claim)
Dimensions (W × D × H)	27 × 56 × 39 cm
Weight	44 kg
Volume	58 litres (brand claim)
Discharge temperature	-20 °C to 40 °C
Charge temperature	0 °C to 40 °C
Safety certifications	UL 9540 and UL 9540A

What the brand says

Anker presents the S5000 as the longest-lasting 5 kWh power station, based on its internal measurements in the 1,000 W range. The brand claims it can power a house for 48 hours and that it runs 99% of household appliances. According to Anker’s measurements, it keeps a 700 L fridge running for up to 86 hours.

On size, Anker presents it as the smallest and lightest 5 kWh station. According to its own comparison, it is 28% lighter and 45% smaller than competing models of the same capacity.

Anker claims the lowest idle consumption in the industry, at 8.8 W. The brand also claims efficiency 10% above the industry average at a 1,000 W load.

On longevity, Anker estimates a lifespan of 15 years, at 1 to 2 cycles a day with more than 60% of capacity remaining. The brand claims its cells are of the same quality as those used in grid-scale energy storage. It adds that the S5000 meets the highest safety standards for energy storage. The station is certified UL 9540 and UL 9540A.