Anker Solix C300 – the baby-sized 300W/288Wh portable power station (review) – CyberShack
Summary
The Anker Solix C300 is a compact 300W/288Wh LiFePO4 portable power station that packs a surprising amount of capability into a 4.13kg, vertical-rectangle chassis. It offers multiple AC and DC outputs, fast USB-C charging up to 140W, app control via Wi‑Fi or Bluetooth, and a 5‑year warranty. CyberShack tested firmware 1.0.4.9 and found solid inverter efficiency (around 88–90%), quiet operation (~25dB), and reliable UPS behaviour with a 10ms cutover.
Key practical uses: powering low-wattage lights for a few hours, running a 50W CPAP for about five hours, charging laptops and USB devices quickly, and acting as a small UPS for sensitive equipment. At the current sale price ($449 until 21/9/25) CyberShack judges it strong value for occasional or emergency backup use.
Key Points
- Capacity and output: 288Wh battery, 300W continuous AC (two 230V ports) with a short surge capacity of ~600W.
- Battery chemistry: LiFePO4 (LFP) rated for 3000+ full charge cycles and backed by a 5‑year ACL warranty.
- Charging: AC charging up to 330W (about 1 hour), solar input via XT60 up to 100W, car charging at 12V/10A/120W, and USB‑C PD 3.1 up to 140W.
- Ports: multiple USB‑C ports (C2/C3 140W), C1 and A share low‑power outputs, a 12V car socket, and two AC outlets; max combined AC+DC output ~360W.
- UPS and efficiency: 10ms transfer time suitable for sensitive electronics; measured DC→AC efficiency ≈88–90% and low idle draw (~10W).
- Usability: light (4.13kg), integrated carry loops and LED bar light, quiet (≈25dB), app support for firmware and settings, no IP rating.
- Value and rating: CyberShack rates features, value and performance in the mid‑80s and ease of use 90 — positioned as a small‑capacity, occasional/emergency backup solution.
Author’s take
Punchy: This is a well‑rounded little unit — small, quiet and surprisingly efficient. Match it to the right devices and it’s a very sensible addition to a home toolkit or weekend kit. The price on sale makes it an easy recommendation for buyers who want LiFePO4 safety and decent cycle life without hauling a heavy power station.
Why should I read this?
If you don’t want to faff around with huge, heavy power stations and just need something that actually works for phones, laptops, CPAPs and a couple of lights, this review saves you the time. It tells you what the Solix C300 can realistically run, how fast it charges, how noisy it is, and whether it’s worth the money — short answer: yes, if you pick the right loads.
Context and relevance
Portable power stations are increasingly popular for emergency preparedness, camping and home UPS duties. The Anker Solix C300 sits in the small‑capacity segment but stands out because of its LFP battery, high AC charging rate, efficient USB‑C PD ports and quiet operation. For anyone wanting reliable, long‑life chemistry and quick charging in a compact form, this is very relevant. It’s not a caravan‑towing solution, but it’s ideal for day trips, light off‑grid use and as a backup for sensitive electronics.
