The Anker SOLIX C300 DC is an unusually focused portable power station: 288Wh of nameplate capacity, up to 300W total output, four USB-C ports, two USB-A ports, a 12V car socket, and no household AC outlet. That last detail decides the purchase.

Buy it for a camping kit already built around USB-C, USB-A, and compatible 12V equipment. Skip it when even one essential device has only a wall plug. The similarly named SOLIX C300 is a different, heavier AC-capable model; “DC” is not a minor suffix or color choice.

Quick verdict

Best for: phones, tablets, USB-C laptops, cameras, rechargeable lights, and compatible 12V equipment on short car-camping or off-grid trips.

Main advantage: useful energy capacity and high-power USB-C in a 6.17-pound narrow package without carrying an inverter you do not need.

Hard limit: no AC receptacle. You cannot solve that after arrival with a normal wall charger.

Planning limit: 288Wh is battery nameplate energy, not a promise of 288Wh delivered to every device. Conversion, cables, temperature, standby load, and device charging losses reduce usable energy.

The compatibility matrix

List every device before comparing runtime. Connector, voltage protocol, and peak demand matter before watt-hours do.

Camp device C300 DC fit Check before relying on it
USB-C phone or tablet Strong Cable quality and device charge profile
USB-C PD laptop Strong when compatible Laptop input wattage and supported PD profile
USB-A accessory Good Real draw and low-power auto-off behavior
Rechargeable headlamp Good if it charges by USB Exact cable; some lights use proprietary batteries or docks
12V compressor cooler Conditional Plug, startup draw, continuous draw, cutoff behavior, and 120W socket ceiling
Starlink Mini or similar DC gear Conditional Exact cable, negotiated voltage, sustained draw, and weatherproof placement
CPAP or medical equipment Do not assume Confirm with maker and clinician; test the complete approved setup
Camera charger with only a wall plug Poor Needs a compatible USB/DC charger or AC-capable station
Kettle, heater, hair dryer, induction hob Wrong product AC equipment and usually beyond this size class
AC-only pump or lantern charger Wrong product Choose an AC-capable station or different accessory

A power station can have ample stored energy and still be useless for a device because the required outlet or protocol is absent.

Ports and power ceilings

Anker’s current page lists seven outputs: two USB-C ports up to 140W each, one USB-C up to 100W, one USB-C up to 15W, two USB-A ports up to 12W, and one 12V car socket up to 120W. The support page identifies total output as 300W maximum.

Those figures are ceilings under compatible conditions, not amounts every device receives simultaneously. USB Power Delivery negotiates among supported voltage and current profiles. The device, cable, active port combination, battery state, and station limits all participate.

Do not add every port’s maximum and expect the sum. Treat 300W as the station-wide ceiling and confirm combined-output behavior in the A1726 guide. For a 12V cooler, the car socket’s 120W maximum is the first gate, followed by startup and continuous consumption.

C300 DC versus C300

The two models share a 288Wh capacity label but answer different jobs.

Decision C300 DC A1726 C300 AC model
Household AC outlets None Included on the separate AC model
Core use USB and 12V equipment Broader plug compatibility
Published C300 DC weight 6.17 lb Heavier separate configuration; check exact listing
Shape Narrow upright body Different body and port layout
Best reason to choose Avoid carrying an inverter you will not use Power equipment that genuinely requires AC

An AC inverter adds conversion losses, weight, heat, and another operating mode, but unlocks wall-plug equipment. The DC model is more elegant only when the camping kit is genuinely DC-native.

Model number A1726 is the cleanest identity check. Retailer searches blend C300, C300X, C300 DC, bundles, and accessories. No consistent direct U.S. ASIN response could be independently matched during this review, so the action uses an honestly labelled exact-model Amazon search rather than pretending one variation is universal.

Capacity and runtime planning

Start with each device’s measured or documented wattage and required hours. Multiply watts by hours to estimate device-side watt-hours, then leave meaningful headroom for conversion and environmental losses.

A device averaging 20W for ten hours asks for 200Wh before losses. That sits below the 288Wh nameplate but does not prove success: peaks, cable conversion, cold, reserved capacity, and other loads still matter. A 60W device for five hours asks for 300Wh before losses and already exceeds the nameplate arithmetic.

Use this worksheet:

Device Input Average W Peak W Hours Device-side Wh
Essential device 1 USB-C / USB-A / 12V measure verify plan watts × hours
Essential device 2 USB-C / USB-A / 12V measure verify plan watts × hours
Optional device USB-C / USB-A / 12V measure verify plan watts × hours

Add the watt-hours, then test the exact setup at home with the same cables and duty cycle. Do not adopt an independent reviewer’s Starlink, laptop, or phone runtime as your promise. Nordic Gear Lab’s 2026 one-year report shows the station fitting one DC-heavy field kit, but its loads, panels, conditions, and pattern are its own.

Recharging choices

Anker lists USB-C, solar, and vehicle routes. The product page advertises up to 280W combined from two 140W USB-C inputs, up to 100W solar, and vehicle charging. Fastest-case percentages and times are maker results under stated conditions, not campsite guarantees.

USB-C charging requires compatible adapters and cables; a high-watt cable does not make a low-power charger faster. Solar requires a panel and connection that meet the A1726 voltage, current, connector, and polarity requirements. A “120W panel” can still be electrically wrong, while actual output varies with sun angle, shade, temperature, and panel condition.

Secure the unit during vehicle charging, keep ventilation clear, and route cables away from controls. Do not assume a parked vehicle can supply power indefinitely without affecting its starting battery; follow both vehicle and Anker instructions.

Outdoor and safety boundaries

Portable does not mean weatherproof. Forbes’ exact-model evaluation warned to keep the unit level, avoid rain, and respect operating temperatures. Anker lists discharge from -4°F to 104°F and charging from 32°F to 104°F.

Keep it dry, ventilated, protected from impact, and away from tent fabric or bedding that blocks cooling. Do not charge below the published floor. Inspect ports and cables, and stop using damaged, swollen, wet, or unusually hot equipment according to maker guidance.

The pop-up light is a useful secondary area light, but should not be the only illumination. A Black Diamond Spot 400 headlamp keeps hands free; the Coleman BatteryGuard lantern illustrates an independent D-cell backup path.

Ownership friction

The full kit may include high-power USB-C chargers, certified cables, a compatible solar panel, vehicle cable, DC adapters, and optional strap. Inventory the exact package rather than borrowing from a bundle photo.

The Anker app adds settings and monitoring, but essential camp power should not depend on first-time pairing at the trailhead. Configure and test at home. Learn auto-off behavior for low-draw devices and confirm any unattended essential load stays powered.

Anker’s current warranty table places A1726 in a 36-month group. Warranty length is not a promise that capacity stays new; storage state, heat, cycle depth, and time influence battery health. Follow current storage and periodic-check guidance.

Who should buy it

Choose the C300 DC when:

  • every essential device accepts compatible USB-C, USB-A, or 12V power;
  • per-port and combined limits cover measured loads;
  • 288Wh minus real losses covers the trip with headroom;
  • compact size matters more than household-plug flexibility;
  • recharging by USB-C, solar, or vehicle is planned;
  • the station can stay dry and within temperature limits.

This makes it a strong charging hub for modern electronics on car camps and short off-grid stays.

Who should skip it

Skip it if an essential charger, pump, appliance, or medical device requires AC. Buy an AC-capable station instead of building a fragile adapter chain.

Skip it for heat-producing appliances and large backup loads. A 288Wh, 300W DC station is not a household outage system. Skip it when the trip worksheet nearly equals nameplate capacity, leaving no honest allowance for losses, cold, aging, or delayed recharge.

Also skip it if you want a sealed battery to leave outside with a solar panel. The station itself needs protected placement even when a panel is designed for outdoor exposure.

Bottom line

The Anker SOLIX C300 DC is excellent at one defined job: carrying useful energy for a USB-C- and 12V-first camping kit without the weight and conversion path of an AC inverter. Its port selection, 288Wh capacity, 300W total ceiling, 6.17-pound weight, and integrated light make sense together.

The lack of AC is either the reason to buy it or reject it. Audit connectors and watts before checkout, use model A1726 to avoid family-name confusion, and test the complete load plan before the trip.

Sources

Does the C300 DC have AC outlets?

No. A1726 is DC-focused. The separately named C300 provides AC output; verify its exact configuration if wall plugs are essential.

Can one USB-C port output 300W?

No. Anker lists 300W as station-wide total. Its strongest individual USB-C ports are rated up to 140W under compatible USB PD conditions.

Can it run a 12V cooler?

Only when the plug, startup draw, continuous demand, and cutoff behavior fit the 12V socket’s 120W maximum and the trip energy budget. Test the exact combination.

Is 288Wh the usable output?

It is nameplate capacity. Delivered energy is lower and varies with conversion, cables, temperature, standby use, and device losses.

Can it charge from solar?

Yes, up to Anker’s published 100W input when the panel and connection meet A1726 electrical requirements. Panel wattage alone does not prove compatibility.

Is it safe in rain?

Do not expose it to rain. Keep it dry, level, ventilated, and within Anker’s stated temperatures.