Quick answer
The Anker SOLIX C300 packs a 288Wh LiFePO4 battery into a 9.1 lb body, putting out 300W continuous (600W surge) with a wall recharge to 80% in about 50 minutes, per Anker’s published specs. Anker’s own site lists it at $299.99, but it regularly sells for $169-$230 on Amazon. The catch buyers miss: “C300” isn’t one product anymore. Anker sells three versions — the standard C300 (AC outlets included), the C300 DC (no AC outlets, lighter), and the C300X (adds 10ms UPS backup) — that all share the same core 288Wh/300W battery but genuinely differ in what they can power.
That naming overlap matters because a shopper comparing prices across listings can end up ruling out the wrong unit for their use case, or paying an X-model premium for a UPS feature they’ll never use.
At a glance
| Spec | Anker SOLIX C300 (standard) |
|---|---|
| Capacity | 288Wh LiFePO4 |
| AC output | 300W continuous (600W surge) |
| AC recharge (0-80%) | ~50 minutes |
| Weight | ~9.1 lb |
| Noise | ~25dB at 3.3 ft |
| Warranty | 5 years |
| Price | $299.99 MSRP, ~$169-$230 street |
| Rating | ★★★★½ (4.4/5) |
What we like
- Genuinely pocketable for a 288Wh unit. At 9.1 lb and roughly 15% smaller than comparable 300W-class stations, per Anker’s own sizing claims, this is one of the easier units on this site to justify carrying on a backpacking trip rather than just tossing in a car.
- Fast wall recharge. An 80% refill in about 50 minutes means a lunch-break top-off gets you back to nearly full, which matters more on a 288Wh unit than a 2,000Wh one since you’ll likely be recharging it more often.
- Quiet enough for a bedroom or tent. At roughly 25dB from 3.3 ft, the fan noise is closer to a quiet room than a running appliance — a real differentiator versus louder units in this capacity class.
- 5-year warranty across the entire C300 family (standard, DC, and X), which matches the longest coverage terms tracked on this site for any sub-$300 unit.
Where it falls short
- The name covers three different products. “Anker SOLIX C300” alone doesn’t tell you whether you’re looking at a unit with AC outlets. The C300 DC drops AC power entirely for USB/car-socket charging only, which is a dealbreaker if you plan to run a mini-fridge or CPAP machine directly off it.
- No UPS backup on the base model. If you need sub-second switchover for a CPAP machine, medical device, or home server during outages, the base C300 doesn’t do that — you’d need the C300X’s 10ms UPS mode instead, at a real price premium.
- 300W ceiling. Continuous output caps out well below what a full-size fridge, space heater, or power tool typically draws — this is a device-charging and small-appliance unit, not a home-backup one.
Who should buy it
Buy the standard C300 if you want AC-outlet flexibility in a genuinely light, fast-charging 288Wh unit and don’t need UPS backup. If you’re optimizing purely for weight and only need USB or car-socket charging, the C300 DC drops the AC inverter for an even lighter build — but confirm you won’t need a wall-outlet appliance before choosing it. If you have a CPAP machine, medical device, or home server that can’t tolerate even a brief power gap, spend the extra $50-$100 on the C300X’s 10ms UPS mode instead. And if 288Wh isn’t enough capacity for your trip length, the EcoFlow River 3 Plus and Jackery Explorer 300 Plus sit in the same price-and-size class with different tradeoffs — see our best budget portable power station or best power station for camping roundups for the full side-by-side. If you outgrow 288Wh, the Anker SOLIX C800 steps up to 768Wh in the same product family, and if you need a full 1kWh-class unit our Anker SOLIX C1000 Gen 2 review covers the brand’s newer, higher-output option in that tier.
Anker SOLIX C300 (288Wh)
- 300W continuous AC output (600W surge) — enough for phones, laptops, a CPAP without humidifier, and small appliances.
- ~50min recharge to 80% at the wall; 5-year warranty; ~9.1 lb.
- Confirm you're buying the AC-outlet "standard" C300 and not the AC-less C300 DC before checking out.
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The bottom line
The Anker SOLIX C300 is one of the lightest, fastest-charging units in this site’s sub-$300 tier, backed by a 5-year warranty that beats most rivals at this price. The catch is entirely in the name: “C300” now spans a standard AC-outlet model, an AC-less DC variant built for pure portability, and a UPS-equipped X model aimed at medical and server backup. Match the variant to your actual use case — AC outlets, weight, or UPS switching — before you buy, not just the model number. See our full portable power station rankings for how it compares across every capacity class, or our Anker SOLIX vs. Bluetti comparison for a cross-brand look at this price tier.