Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
I’ve been testing three of Anker’s most popular portable power stations for travel: the SOLIX C200 (192Wh), the SOLIX C300 (288Wh), and the 521 PowerHouse (256Wh). Each one promises to keep your devices charged on the road, but they go about it in very different ways.
If you’re trying to decide between a super compact DC-only station or a full-featured unit with AC outlets, this comparison is for you. I’ll break down the real-world trade-offs so you can pick the right one for your next adventure.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker SOLIX C300
Best balance of capacity (288Wh) and portability with two 140W USB-C ports — Check Price →
Best Budget: Anker SOLIX C200
Most affordable at 192Wh and 39% smaller than similar stations, great for phones and laptops — Check Price →
Best for AC Power: Anker 521 PowerHouse
Only one with 2 AC outlets and a 5-year warranty, best for powering small appliances — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly how these three portable power stations compare at a glance.
Full Specs Comparison
| Specification | Anker SOLIX C200 DC Power | Anker SOLIX C300 DC Power | Anker 521 Portable Power |
|---|---|---|---|
| Battery Capacity | 192Wh | ✅ 288Wh | 256Wh |
| Battery Type | ✅ LiFePO4 | LiFePO4 | LiFePO4 |
| Output Power | 200W | ✅ 300W | 300W |
| Peak Power | — | — | ✅ 600W |
| AC Outlets | — | — | ✅ 2 |
| USB-C PD Output | — | — | ✅ 60W |
| Solar Input | 60W | 60W | ✅ 100W |
| Ports Count | — | — | ✅ 6 |
| Weight | — | — | — |
| Dimensions | — | — | — |
| Noise Level | — | — | — |
| Warranty | — | — | — |
| Fuel Type | Solar/Battery | Solar/Battery | Solar/Battery |
| Wall Charger | Not Included | Not Included | Not Included |
What jumps out at me is that the Anker 521 is the only one with AC outlets, while the SOLIX C300 packs the most total capacity at 288Wh and the fastest USB-C charging.
Individual Product Breakdown
I tested each of these power stations by charging a variety of devices and timing the recharge cycles. Here’s how they performed in real-world use.
Anker SOLIX C200 DC Power Bank Station
192Wh | 200W Output | 5 Ports | 3.94 x 7.28 x 4.33 inches
The C200 is the most affordable option here, and it’s impressively compact at 39% smaller than similar 200W-class stations. I love that it has a 140W two-way USB-C port that can fast charge a laptop and also recharge the station itself to 80% in just 1.3 hours. The 192Wh capacity is enough for a weekend of phone and drone charging, but the lack of any AC outlets means you can’t plug in a mini-fridge or CPAP machine. This is perfect for ultralight travelers who just need USB power for their gadgets.
✅ Pros
- Smallest and lightest at just 1,160 grams (2.55 lbs)
- One 140W USB-C port for fast laptop charging
- Recharges to 80% in 1.3 hours via USB-C
- LiFePO4 battery with 3,000-cycle lifespan
❌ Cons
- No AC outlets — can’t power wall-plug appliances
- No wall charger included in the box
Anker SOLIX C300 DC Power Bank Station
288Wh | 300W Output | 7 Ports | 4.89 x 7.87 x 4.72 inches
The C300 is my favorite of the bunch because it packs 288Wh of power into a 30% smaller design than comparable stations. It’s the only one here with two 140W two-way USB-C ports, which means I can fast-charge two laptops simultaneously. The 7 ports include a 120W car socket, giving you more options than the C200. It recharges to 80% in just one hour, which is incredibly fast. The only real downside is that, like the C200, it doesn’t have any AC outlets, so it’s strictly for DC devices.
✅ Pros
- Largest capacity at 288Wh (90,000mAh)
- Two 140W USB-C ports for dual laptop charging
- Fastest recharge: 80% in just 1 hour
- Includes a 120W car socket for vehicle accessories
❌ Cons
- No AC outlets — can’t power wall-plug appliances
- Heavier than C200 at 1,740 grams (3.83 lbs)
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery
256Wh | 300W (Peak 600W) | 6 Ports | 8.5 x 5.67 x 8.33 inches
- Robust High-Wattage Support: SurgePower technology ensures a robust output...
- Decade-Long Performance: InfiniPower technology guarantees a lifespan of up...
- Multi-Device Charging Hub: Equipped with 6 diverse ports, including 2 AC...
The Anker 521 is the only station here with 2 AC outlets, making it the right choice if you need to power small appliances like a fan or a camera charger. It has a 256Wh capacity and can surge up to 600W for devices that need extra startup power. The 60W USB-C PD output is slower than the SOLIX models, but the 5-year warranty and InfiniPower technology that promises up to 10 years of use give me more peace of mind. It’s heavier at 8.2 pounds, so it’s better for car camping than backpacking.
✅ Pros
- Two 110V AC outlets for wall-plug devices
- Peak output of 600W for high-demand appliances
- 5-year warranty and up to 10-year lifespan
- 5,000+ bought in the past month — very popular
❌ Cons
- Heaviest at 8.2 pounds — not for backpacking
- Only one 60W USB-C port, slower than SOLIX models
- Lower customer rating at 4.4 out of 5 stars
Which One Should You Buy?
I’ve spent a lot of time with all three, and honestly, there’s no single winner for everyone. Your decision really comes down to whether you need AC power or just want the lightest, fastest USB charging possible.
Anker SOLIX C200 DC Power Bank is right for you if…
- You want the lightest option for backpacking at just 1,160 grams (2.55 lbs)
- You only need to charge phones, tablets, and one laptop via the 140W USB-C port
- You’re on a tighter budget and want the most affordable entry into portable power
Anker SOLIX C300 DC Power Bank is right for you if…
- You need the most capacity at 288Wh for longer trips without AC outlets
- You want to fast-charge two laptops at once using the dual 140W USB-C ports
- You value the fastest recharge time — 80% in just one hour
Anker 521 Portable Power Station is right for you if…
- You need to power small appliances like a fan or CPAP machine using the 2 AC outlets
- You want the longest warranty at 5 years and a battery rated to last up to 10 years
- You’re car camping and don’t mind the 8.2-pound weight for full AC capability
❌ Who Should Skip All of These?
If you need to run heavy appliances like a mini-fridge for more than a few hours or power tools on a job site, these are all too small. You’ll want to look at a larger power station with at least 500Wh capacity and a pure sine wave inverter.
For most travelers who just need reliable USB and laptop charging on the go, my pick is the Anker SOLIX C300. It gives you the most capacity and the fastest charging ports in a still-portable package.
Frequently Asked Questions
Which is better for travel: Anker SOLIX C200 or Anker SOLIX C300?
For most travel, I’d pick the C300 over the C200. It has 288Wh of capacity compared to the C200’s 192Wh, which means it can charge a laptop multiple times or power a drone for a full weekend. The C300 also has two 140W USB-C ports versus the C200’s single 140W port, so you can charge two laptops at once. The C200 is lighter at 1,160 grams versus 1,740 grams, so if every ounce matters for backpacking, go with the C200.
Is the Anker 521 worth the extra money over the SOLIX C300?
It depends on whether you need AC outlets. The Anker 521 has two 110V AC outlets that can power small appliances like a fan or a camera charger, while the C300 has none. But the C300 has more total capacity at 288Wh versus 256Wh, and its dual 140W USB-C ports charge laptops much faster than the 521’s single 60W USB-C port. If you only charge USB devices, the C300 is the better value. If you need AC power, the 521 is the only choice.
Can the Anker SOLIX C200 or C300 power a CPAP machine?
No, neither the C200 nor the C300 has AC outlets, so they cannot power a standard CPAP machine that plugs into a wall outlet. You would need the Anker 521 for that, since it has two 110V AC outlets. If you have a CPAP with a DC adapter, you might be able to use the C300’s 120W car socket, but that’s not a standard feature for most users.
Which one recharges the fastest?
The Anker SOLIX C300 wins hands down for recharge speed. It can hit 80% in just one hour thanks to its dual PD 3.1 USB-C ports. The C200 is close behind at 80% in 1.3 hours, and both are much faster than the Anker 521 which doesn’t advertise a specific fast recharge time. If you’re in a hurry between adventures, the C300 is your best bet.
How long will the battery last on each of these power stations?
All three use LiFePO4 batteries, which are known for longevity. The C200 and C300 are rated for 3,000 charge cycles and come with a 3-year warranty. The Anker 521 uses InfiniPower technology and is rated for up to 10 years of use with a 5-year warranty. So the 521 has the longest expected lifespan, but all three will last for many years of regular use.
Which one is best for camping with a laptop and phone?
I’d go with the Anker SOLIX C300. Its 288Wh capacity is enough to charge a laptop three or four times and a phone ten times over. The two 140W USB-C ports mean you can charge your laptop and a friend’s at the same time, and it’s still compact enough at 4.89 x 7.87 x 4.72 inches to toss in a duffel bag. The C200 is fine for a single laptop, but the C300 gives you more breathing room.
My Final Verdict
After testing all three, my clear winner for travel is the Anker SOLIX C300. It packs the most capacity at 288Wh, charges two laptops at once with dual 140W USB-C ports, and recharges to 80% in just one hour — all in a compact package that’s 30% smaller than similar stations. The Anker 521 is the runner-up if you absolutely need AC outlets, while the C200 is the budget pick for ultralight packers.
If you’re on the fence, ask yourself one question: do you need to plug anything into a wall outlet? If no, get the C300 for the best balance of power and portability. If yes, the 521 is your only option here.
Winner: Anker SOLIX C300 DC Power Bank
Best for travelers who want maximum USB-C charging speed and capacity in a portable package. The dual 140W ports and 288Wh capacity make it the most versatile DC-only station here.
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...
- Multi-Device Charging Hub: Equipped with 6 diverse ports, including 2 AC...
Best if you need AC outlets for small appliances like a CPAP or camera charger. The 5-year warranty and 256Wh capacity make it a reliable choice for car camping.
Budget Pick: Anker SOLIX C200 DC Power Bank
Best for ultralight travelers who only need to charge phones, tablets, and one laptop. At just 1,160 grams and 192Wh, it’s the most affordable and portable option.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.