Photo from the manufacturer
JouleSpecs does not sell and does not show shop prices: check the price where you buy.
Where to buy
Check the price on AmazonPaid link: the price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
The Anker SOLIX C300X is a lithium iron phosphate power station with a built-in inverter: alongside its DC outputs it adds two AC outlets, so plug-in devices find a place too. It charges from the sun, from the car or from a home outlet, and the central USB-C port works both ways, as input and output.
The outlets hold a margin beyond continuous power, which is what appliances need when they draw more at startup than they do afterward. Not every portable panel works with it, though: ones with a five-volt USB-C output don't connect, and a panel with the right connector is needed.
It carries over the shoulder with the included strap or slips into a backpack: it's for anyone who goes camping, fishing or shooting photos and wants to be able to power a small plug-in appliance too, not for anyone looking for a home reserve for power outages.
official manufacturer list price — on nominal capacity
| Parameter | Value | Source |
|---|---|---|
| Nominal capacity | 0.288 kWh | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Continuous output | 300 W | Declared by the brand |
| Peak output | 600 W | Declared by the brand |
| AC outlets | 2 | Declared by the brand |
| Fastest USB-C | 140 W | Declared by the brand |
| 0–80% charge time | 50 min | Declared by the brand |
| Maximum solar input | 100 W | Declared by the brand |
| Rated cycles | 3000 cicli | Declared by the brand |
| Warranty | 5 anni | Declared by the brand |
| Mounting | Portable | Declared by the brand |
| Official list price | 279.99 € | Declared by the brand |
| Usable capacity | — | Not declared |
| Depth of discharge | — | Not declared |
| Cell supplier | — | Not declared |
| Expandable | — | Not declared |
| Maximum expanded capacity | — | Not declared |
| Peak duration | — | Not declared |
| Maximum charge power | — | Not declared |
| Backup power | — | Not declared |
| Switchover time | — | Not declared |
| Capacity at end of cycle life | — | Not declared |
| Guaranteed throughput | — | Not declared |
| Guaranteed remaining capacity | — | Not declared |
| Round-trip efficiency | — | Not declared |
| Standby consumption | — | Not declared |
| Ingress protection | — | Not declared |
| Minimum temperature | — | Not declared |
| Maximum temperature | — | Not declared |
| Cell heating | — | Not declared |
| Noise level | — | Not declared |
| Wheels and handle | — | Not declared |
| Works without internet | — | Not declared |
| Local control | — | Not declared |
| Open protocols | — | Not declared |
| Home Assistant integration | — | Not declared |
| Where the data is hosted | — | Not declared |
| Remote updates | — | Not declared |
| App required for setup | — | Not declared |
| Declared standards | — | Not declared |
The rest of the data comes from 5 pages on the manufacturer's site, cited row by row in the table above.
A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.
These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.
Chosen by the declared use tier and footprint, not by price: we don't publish prices.
Same tier, different manufacturer
