Anker SOLIX C1000 Gen 2 vs C2000 Gen 2: which should you buy?

The verdict up front

The C1000 Gen 2 is the home-backup sweet spot: 1.02 kWh, 2,000W across 9 sockets, full recharge in 49 minutes. Enough for a fridge, lights and router through a typical outage.

The C2000 Gen 2 is the bigger, more versatile box: 2.05 kWh, 2,400W, a campervan socket, engine charging, and an add-on battery taking it to 4 kWh. It is heavier (18.9 kg vs 11.3 kg).

Only pay for the C2000 if you will use the extra capacity, the campervan socket, or the expansion path. Otherwise the C1000 does the same home job with less weight.

Capacity and output: double the storage, more headroom

The C2000 holds exactly twice the usable energy (2.05 vs 1.02 kWh) and can double again to 4 kWh with the BP2000 add-on, while the C1000's size is fixed. In practice: the C1000 covers an evening of essentials, the C2000 covers that plus power-hungry jobs.

Output tells the same story: 2,000W steady (3,000W peaks) against 2,400W steady (4,000W peaks). Both run kettles and microwaves; the C2000 has more headroom for tools and overlapping loads.

Charging: wall, solar, car and cheap overnight power

Both charge fast from a wall socket. The C1000 refills in 49 minutes, the quickest in its size class. The C2000 adds more ways in: solar panels (800W max), a 12V car socket, a generator, and an 800W alternator charger that tops it up while you drive a campervan.

The C2000's standout is its cheap-tariff mode: charge overnight on cheap electricity and run things by day. It is the closest a portable box gets to battery economics, though it still cannot feed your home wiring.

Backup behaviour: both switch in 10 milliseconds

Both keep plugged-in gear running in a power cut with a 10-millisecond switchover, so routers and computers stay up. The C2000 adds storm mode, which pre-charges the box when bad weather is forecast.

Neither box is weatherproof for a permanent outdoor install, and neither is a fixed home battery: no fuse-box wiring, no grid feed. For the full boundary, see our portable-vs-plug-in guide.

Price and the cheaper third option

See the individual product pages for dated retailer prices and the current manufacturer prices we could verify. Amazon blocked fresh price and stock verification on 17 October 2026, so earlier Amazon figures are labelled as historical. Compare the same base unit, excluding solar-panel bundles.

And if even the C1000 is more than you need, the C300 DC handles phones, laptops and lights in a box a third of the weight. Match the box to the job, not the spec sheet.

Price verification: 17 October 2026

Product prices are dated snapshots for the stated base unit. See each linked product page for the retailer, price-check date and stock notes. Installation, extra batteries and panels may cost more. A price update does not mean all technical specifications or connection rules have been rechecked.