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Anker SOLIX C300X DC
A DC-only power bank the size of a lunchbox. No AC outlets, but four USB-C ports that charge laptops without inverter losses.
How long it runs
Estimated from 288 Wh at 92% DC efficiency, since it has no inverter, using typical average draw.
Specs
| Capacity | 288 Wh |
|---|---|
| Continuous output (DC) | 300 W |
| Battery chemistry | LiFePO4 (LFP) |
| Rated cycles | 3,000+ to 80% |
| Weight | Not published |
| Outlets | 4 USB-C (140 W, 140 W, 100 W, 15 W), 2 USB-A, 1 car socket. No AC outlets |
| Wall recharge | About 70 min over USB-C |
| Max solar input | 100 W |
| Backup switching (UPS) | Not listed |
What's good
- Two 140 W USB-C ports charge two laptops at full speed.
- No inverter, so more of the battery reaches your devices.
- LiFePO4 cells rated for 3,000+ cycles.
- Recharges over USB-C in about 70 minutes.
What to know
- No AC outlets at all.
- 288 Wh is not enough for a full night of CPAP at 40 W.
- Anker doesn't publish the weight in the listings we checked.
Compare it
Put the Anker SOLIX C300X DC side by side with every other station in the runtime calculator, or read the reviews of the closest rivals: Jackery Explorer 300 v2.
Specs from an authorized dealer listing (EcoWizard) and Anker's product listing. Runtimes are our estimates. Specs last checked October 2026.