Anker SOLIX Anker SOLIX C300X DC

Name: Anker SOLIX C300X DC
Brand: Anker SOLIX
SKU: A1728311
Author: JouleSpecs

Estimated price range

90–200 € ≈ $97–$216

An editorial estimate, not a selling price

JouleSpecs does not sell and does not show shop prices: check the price where you buy.

Where to buy

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Sheet on the Anker SOLIX website →

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Data from official source

Sheet curated by JouleSpecs — We check every spec sheet against the manufacturer's own documentation: each value carries its source and the date we read it. Published Sept. 21, 2026 · Last updated Sept. 21, 2026 · Data verified Sept. 21, 2026

The Anker SOLIX C300X DC is a travel battery with no AC outlets: it delivers power only through USB ports, which rules out plug-in appliances but leaves everything else in play — the laptop, the camera, the phone, a camping lamp.

Two of the USB-C ports work both ways, up to a hundred and forty watts: the same port that powers the laptop also fills the battery, and with a wall charger it's back to nearly full in an hour. From the sun it accepts a portable panel, which is what a week away needs.

It fits in a backpack and gets forgotten until it's needed. It's the choice for anyone traveling light who wants to keep a phone, laptop and accessories charged over several days in a row; anyone counting on plugging in an appliance needs to look elsewhere.

01 · Verified data

Technical specifications

Cost per kWh 763,85 €/kWh

official manufacturer list price — on nominal capacity

Round-trip efficiency Anker SOLIX does not state it.

where we looked

Standby consumption Anker SOLIX does not state it.

where we looked

Parameter	Value	Source
Nominal capacity	0.288 kWh	Declared by the brand
Fastest USB-C	140 W	Declared by the brand
0–80% charge time	60 min	Declared by the brand
Maximum solar input	100 W	Declared by the brand
Warranty	3 anni	Declared by the brand
Mounting	Portable	Declared by the brand
Official list price	219.99 €	Declared by the brand
Usable capacity	—	Not declared
Depth of discharge	—	Not declared
Cell chemistry	—	Not declared
Cell supplier	—	Not declared
Expandable	—	Not declared
Maximum expanded capacity	—	Not declared
Continuous output	—	Not declared
Peak output	—	Not declared
Peak duration	—	Not declared
AC outlets	—	Not declared
Maximum charge power	—	Not declared
Backup power	—	Not declared
Switchover time	—	Not declared
Rated cycles	—	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

Which documents this page rests on

000036560 1 row of the table · file hosted on salesforce-knowledge-download.s3.us-west-2.amazonaws.com

The rest of the data comes from 2 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.

02 · The numbers

What it really costs

Cost per kWh 763.850 €/kWh official manufacturer list price — on nominal capacity

How we worked it out

price: 219.990
nominal capacity: 0.288

Battery life cycles 1095 cycles warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first

How we worked it out

warranty years: 1095

Cost of stored energy 0.698 €/kWh warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first
on nominal capacity: the manufacturer does not state the usable figure, so the real cost is higher
without conversion losses, which the manufacturer does not state: the real cost is higher

How we worked it out

price: 219.990
nominal capacity: 0.288
battery life cycles: 1095
round-trip efficiency: 100
energy delivered over the whole life: 315

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.

03 · Summary

Pros and cons

In favour

Two USB-C ports up to a hundred and forty watts that work both ways: the same port powers the laptop and fills the battery.
With a wall charger it's back to nearly full in an hour.
It accepts a solar panel: for a week away there's no need to look for an outlet.

Worth knowing

It has no AC outlets: it powers only what charges over USB, not a plug-in appliance. source
The shoulder strap for carrying it is sold separately. source

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