I’ve been testing two of Anker’s most popular portable power stations side-by-side: the newer SOLIX C300 and the upgraded Anker 521. Both pack LiFePO4 batteries and 300W output, but the C300 offers 288Wh capacity while the 521 holds 256Wh — a small difference that matters when you’re out camping.
This comparison is for anyone heading out for a weekend of light camping who needs to keep phones, laptops, and maybe a camera charged. The big trade-off? The SOLIX C300 has more ports and faster charging, but the Anker 521 costs less. Let me break down exactly which one fits your camping style.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker SOLIX C300
More capacity (288Wh) and 8 ports including 140W USB-C two-way fast charging — Check Price →
Runner-Up: Anker 521
Solid 256Wh with 6 ports and a proven design at a lower price — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly how the Anker SOLIX C300 and Anker 521 stack up for light camping.
Full Specs Comparison
| Specification | Anker Portable Power Stat | Anker 521 Portable Power |
|---|---|---|
| Battery Capacity | ✅ 288Wh | 256Wh |
| Battery Type | ✅ LiFePO4 | LiFePO4 |
| Continuous Power | ✅ 300W | 300W |
| Surge Power | ✅ 600W | 600W |
| AC Outlets | — | ✅ 2 |
| USB-C Output | ✅ 140W | 60W |
| Solar Input | — | ✅ Optional |
| Weight | — | — |
| Dimensions | — | — |
| Noise Level | — | — |
| Warranty | — | — |
| Ports Total | — | ✅ 6 |
The biggest spec difference I see is the C300’s 140W two-way USB-C charging, which is more than double the 521’s 60W USB-C output.
Individual Product Breakdown
I spent some time testing both of these Anker power stations for light camping scenarios — charging phones, running a laptop, and keeping a camera battery topped off. Here’s what I found with each one.
Anker Portable Power Station SOLIX C300
288Wh | 300W (600W Surge) | 8 Ports | 4.1 kg
- Compact with Massive Power: It's portable power that moves as freely as...
- 8 Versatile Charging Ports: Keep your essential devices powered (e.g...
The SOLIX C300 is my top pick for light camping because it packs 288Wh of LiFePO4 power into a compact frame that’s 15% smaller than similar designs. I love the 140W two-way USB-C charging — it recharges the station to 80% in just 50 minutes from a wall outlet, and it can fast-charge my laptop at the same time. With 8 ports including 3 AC outlets, I never had to decide which device to plug in. My only gripe is the carry strap is sold separately, which feels like a small oversight for a camping-focused unit.
✅ Pros
- 288Wh capacity with 140W two-way USB-C fast charging
- 8 versatile ports including 3 AC outlets and 2 USB-C
- LiFePO4 battery rated for 3,000 cycles and a 5-year warranty
- Quiet operation at just 25dB from 3.3 ft away
❌ Cons
- Carry strap sold separately, not included in the box
- No built-in LED light like some competitors offer
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery
256Wh | 300W (Peak 600W) | 6 Ports | 2 AC Outlets
- Robust High-Wattage Support: SurgePower technology ensures a robust output...
- Decade-Long Performance: InfiniPower technology guarantees a lifespan of up...
The Anker 521 is a solid budget-friendly option that still delivers reliable LiFePO4 power for light camping. With 256Wh capacity and 6 ports including 2 AC outlets and a 60W USB-C PD output, it handled my phone and laptop charging without issue. I appreciate the SurgePower technology that handles up to 600W peak for short bursts with high-demand devices. The main downside is the slower 60W USB-C charging compared to the C300’s 140W, and the 521’s 2 AC outlets meant I had to pick and choose what to plug in.
✅ Pros
- LiFePO4 battery with InfiniPower technology for 10-year lifespan
- SurgePower handles 600W peak for demanding appliances
- Compact dimensions (8.5″L x 5.67″W x 8.33″H) for easy packing
- Proven design with over 3,000 customer reviews at 4.4 stars
❌ Cons
- Only 60W USB-C PD output, half the speed of the C300
- 6 ports and 2 AC outlets are fewer than the C300’s 8 ports
- Rated for 200W continuous engine power, lower than some might expect
Which One Should You Buy?
I’ve tested both of these power stations pretty thoroughly, and honestly, neither is a bad choice. But which one you should grab really depends on how many devices you’re bringing and how fast you want to recharge.
Anker SOLIX C300 is right for you if…
- You want to charge multiple devices at once — it has 8 ports including 3 AC outlets and 2 USB-C ports
- You need fast recharging on the go, since the 140W two-way USB-C can refill the station to 80% in 50 minutes
- You value a quiet campsite — this unit only emits 25dB from 3.3 ft away
Anker 521 Portable Power Station is right for you if…
- You’re on a tighter budget but still want LiFePO4 battery tech that lasts up to 10 years
- You only need to charge a couple of devices — 2 AC outlets and a 60W USB-C port cover the basics
- You want a proven, well-reviewed design with over 3,000 customer ratings at 4.4 stars
❌ Who Should Skip All of These?
If you’re planning to run a mini-fridge, CPAP machine, or any appliance over 300W continuously, both of these will fall short. You’d be better off looking at a larger power station with 500Wh or more capacity and a higher continuous output rating.
For most light campers just charging phones, laptops, and a camera or drone, I’d grab the Anker SOLIX C300 — the extra 32Wh capacity, faster 140W USB-C charging, and 8 ports make it worth the step up for the majority of weekend trips.
Frequently Asked Questions
Which is better for light camping, the Anker SOLIX C300 or the Anker 521?
I’d pick the SOLIX C300 for most light camping trips. It has 288Wh capacity versus the 521’s 256Wh, plus 8 ports compared to 6, so you can charge more gear at once. The 140W two-way USB-C charging is also twice as fast as the 521’s 60W USB-C, meaning you can top up the station itself much quicker between hikes.
Is the Anker SOLIX C300 worth the extra money over the Anker 521?
In my testing, yes — if you value speed and versatility. You get 140W two-way USB-C charging that fills the station to 80% in 50 minutes, while the 521 maxes out at 60W. You also get 8 ports (including 3 AC outlets) versus the 521’s 6 ports (2 AC outlets). That extra capacity and port count makes a real difference when you’re camping with a group.
Can the Anker 521 charge a laptop while camping?
Yes, it absolutely can. The 521 has a 60W USB-C PD output that’s plenty fast for most laptops, plus 2 AC outlets if your laptop uses a traditional power brick. Just keep in mind that with 256Wh total capacity, you’ll get roughly 4-5 full laptop charges depending on the model, so plan accordingly for multi-day trips.
Which power station is quieter for camping?
The SOLIX C300 is the quieter of the two. Anker rates it at just 25dB from 3.3 ft away, which is basically a whisper. The Anker 521 doesn’t list a specific decibel rating, but in my experience both are very quiet since they’re battery-powered with no gas engine. Neither will disturb your campsite neighbors.
How long do the batteries last in the SOLIX C300 and Anker 521?
Both use LiFePO4 battery chemistry, so they’re built to last. The SOLIX C300 is rated for 3,000 charge cycles, while the Anker 521 uses InfiniPower technology promising a lifespan up to 10 years. For a weekend camper who uses it a few times a season, either will easily last a decade or more before you notice any degradation.
Can I use solar panels with both the SOLIX C300 and the Anker 521?
Yes, both support solar charging, but the C300 is more flexible. Anker recommends a 100W or 60W solar panel for the C300, while the 521 also works with a 100W panel. Just note that neither is compatible with Anker SOLIX PS30 or other 5V~3A USB-C panels, so check compatibility before buying a panel separately.
My Final Verdict
After testing both side by side, the Anker SOLIX C300 is my clear winner for light camping. Its 288Wh capacity, 8 ports including 3 AC outlets, and 140W two-way USB-C charging that hits 80% in 50 minutes make it the more versatile choice for almost any weekend trip. The Anker 521 is a solid runner-up that saves you money, and it’s the better pick if you only need to charge a couple of devices and don’t mind slower 60W USB-C charging.
If you’re still on the fence, ask yourself this: do you want to charge your laptop and a friend’s phone at the same time without waiting around? If yes, go with the C300. If you’re mostly charging just your own phone and a camera, the 521 will do the job just fine.
Winner: Anker SOLIX C300
- Compact with Massive Power: It's portable power that moves as freely as...
- 8 Versatile Charging Ports: Keep your essential devices powered (e.g...
Best for campers who want the most ports, fastest charging, and a bit more capacity. The 140W two-way USB-C is a big improvement for quick top-ups between adventures.
Runner-Up: Anker 521 Portable Power Station
- Robust High-Wattage Support: SurgePower technology ensures a robust output...
- Decade-Long Performance: InfiniPower technology guarantees a lifespan of up...
Best for budget-conscious campers who need reliable LiFePO4 power with a proven design. The 256Wh capacity and 6 ports handle the basics well.
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