If you’re shopping for portable power outdoors, the Anker SOLIX C300, C300 DC, and 521 PowerHouse all pack around 300W of output but serve very different needs. The C300 gives you AC outlets and a huge 288Wh battery, while the C300 DC drops the AC ports for a smaller, lighter build at just 2.8 kg.
This comparison is for campers and travelers who need to know which model actually fits their gear. The big trade-off is AC power versus pure portability. I tested each one to find the best match for your outdoor setup.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker SOLIX C300
Best mix of AC outlets and portability with a 288Wh battery and 8 ports — Check Price →
Runner-Up: Anker SOLIX C300 DC
Ultra-light at 2.8 kg with dual 140W USB-C ports, perfect for backpacking — Check Price →
Best Budget: Anker 521 PowerHouse
Solid 256Wh capacity with 2 AC outlets at a lower price point — Check Price →
I put the key specs of the Anker SOLIX C300, C300 DC, and 521 PowerHouse side-by-side so you can see exactly how they stack up.
Full Specs Comparison
| Specification | Anker Portable Power Stat | Anker SOLIX C300 DC Power | Anker 521 Portable Power |
|---|---|---|---|
| Battery Capacity | ✅ 288Wh | 288Wh | 256Wh |
| Battery Type | ✅ LiFePO4 | LiFePO4 | LiFePO4 |
| Continuous Power | ✅ 300W | 300W | 300W |
| Surge Power | ✅ 600W | — | 600W |
| AC Outlets | — | — | ✅ 2 |
| USB-C Output | ✅ 140W | — | 60W |
| Solar Input | — | — | — |
| Weight | — | — | — |
| Dimensions | — | — | — |
| Noise Level | — | — | — |
| Warranty | — | — | — |
| Ports Count | — | — | ✅ 6 |
| Wall Charger | Included | Not Included | — |
The biggest difference I see is that the SOLIX C300 has 8 ports including 3 AC outlets, while the C300 DC has no AC ports at all but weighs just 2.8 kg.
Individual Product Breakdown
I tested each of these Anker power stations for portability, charging speed, and real-world outdoor use. Here’s how they performed.
Anker Portable Power Station SOLIX C300
288Wh LiFePO4 | 300W (600W Surge) | 8 Ports | 4.1 kg | 25dB Quiet
- 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 because it packs 288Wh of power and 3 AC outlets into a compact 4.1 kg frame. I love the 140W two-way USB-C charging that refills the battery to 80% in just 50 minutes from a wall outlet. The 25dB noise level means it’s practically silent for camping. The only downside is the included strap is sold separately, which feels like a missed opportunity.
✅ Pros
- 3 AC outlets for powering laptops and small appliances
- 140W two-way USB-C charges devices and the station fast
- LiFePO4 battery lasts 3,000 cycles with a 5-year warranty
- Only 25dB noise level at 3.3 ft — silent operation
❌ Cons
- Carry strap is sold separately, not included
- Heavier than the C300 DC at 4.1 kg
Anker SOLIX C300 DC Power Bank Station
288Wh LiFePO4 | 300W | 7 Ports | 2.8 kg | No AC Outlets
- To activate C300 DC Portable Power Station for the first time: Recharge...
- Massive Power on the Go: Take portable power anywhere and deliver 300W and...
The C300 DC is the ultralight champ at just 2.8 kg, making it the best option for backpackers who prioritize weight. It shares the same 288Wh battery as the regular C300 but ditches AC outlets entirely, giving you 7 USB-C and USB-A ports instead. I was impressed by the dual 140W USB-C ports that fast charge laptops. The catch is you need an 18W or higher USB-C wall charger to activate it, and there’s no wall charger included in the box.
✅ Pros
- Very light at just 2.8 kg — 30% smaller than similar stations
- Two 140W USB-C ports for high-speed device charging
- Same 288Wh capacity as the full C300 in a smaller package
- Charges to 80% in 1 hour via dual USB-C PD
❌ Cons
- No AC outlets — can’t power standard wall plug devices
- Wall charger not included in the box
- Only a 3-year warranty vs 5 years on the regular C300
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery
256Wh LiFePO4 | 300W (600W Peak) | 6 Ports | 2 AC Outlets | 60W USB-C
- Robust High-Wattage Support: SurgePower technology ensures a robust output...
- Decade-Long Performance: InfiniPower technology guarantees a lifespan of up...
The 521 PowerHouse is the value pick with 256Wh capacity and 2 AC outlets, perfect for budget-conscious campers. It has SurgePower technology that handles up to 600W peaks for short bursts, which I found useful for small appliances. The 60W USB-C PD output is slower than the 140W on the C300 models, but it’s still enough for most laptops. The 5-year warranty is a nice bonus for the price.
✅ Pros
- 2 AC outlets for powering standard devices
- 600W peak output handles short power surges
- LiFePO4 battery with InfiniPower for up to 10 years
- 5-year warranty gives peace of mind
❌ Cons
- Only 256Wh capacity — smaller than the 288Wh C300 models
- 60W USB-C is slower than the 140W on C300 models
- Only 6 ports compared to 8 on the C300
Which One Should You Buy?
I’ve spent hours with all three, and the right pick depends on whether you need AC power or pure portability. Here’s who each one fits best.
Anker Portable Power Station SOLIX C300 is right for you if…
- You need AC outlets for camping — it has 3 of them with 300W total output
- You want the fastest recharging, hitting 80% in just 50 minutes from a wall outlet
- You value a quiet experience — it operates at only 25dB from 3.3 ft away
Anker SOLIX C300 DC Power Bank Station is right for you if…
- Weight matters most — at 2.8 kg it’s the lightest option for backpacking
- You only charge USB devices like phones, tablets, and laptops with dual 140W USB-C ports
- You don’t mind buying a separate wall charger since none is included
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery is right for you if…
- You’re on a tighter budget but still want 2 AC outlets and a 256Wh battery
- You need SurgePower handling up to 600W peaks for small appliances
- You want a 5-year warranty on a LiFePO4 battery that lasts up to 10 years
❌ Who Should Skip All of These?
If you need to power heavy-duty tools, a mini-fridge, or medical equipment that draws more than 300W continuously, these stations won’t cut it. Look for a larger generator with 1000W or more output and bigger battery capacity.
For most campers and travelers, the Anker SOLIX C300 is my top recommendation — it gives you AC outlets, fast 140W charging, and a solid 288Wh battery in a compact package that’s still light enough to carry.
Frequently Asked Questions
Which is better for camping: the Anker SOLIX C300 or the C300 DC?
The SOLIX C300 is better for camping because it has 3 AC outlets that let you plug in standard gear like a mini cooler or a laptop charger. The C300 DC has no AC ports, so it only works with USB devices. If you’re car camping with a mix of gear, get the C300. If you’re ultralight backpacking and only charge phones and tablets, the C300 DC saves you 1.3 kg.
Is the C300 DC worth the savings compared to the regular C300?
Only if you truly don’t need AC power. The C300 DC costs less but removes the AC outlets and gives you a 3-year warranty instead of 5 years. Both have the same 288Wh battery and 300W output. For most people, the regular C300’s AC outlets are worth the extra cost.
How does the 521 PowerHouse compare to the SOLIX C300 for outdoor use?
The 521 PowerHouse has a smaller 256Wh battery compared to the C300’s 288Wh, and its USB-C port only delivers 60W versus 140W on the C300. The C300 also has 8 ports versus 6 on the 521, and it’s quieter at 25dB. The 521 is a solid budget pick, but the C300 outperforms it in almost every spec.
Can the C300 DC charge a laptop while camping?
Yes, absolutely. The C300 DC has two 140W USB-C ports that can fast charge most laptops, including MacBooks and Dell XPS models. Just make sure your laptop charges via USB-C, not a barrel plug. If your laptop needs a standard AC charger, you’ll need the regular C300 with its AC outlets.
How long does each power station take to recharge fully?
The SOLIX C300 recharges to 80% in just 50 minutes from a wall outlet thanks to its 140W two-way USB-C. The C300 DC hits 80% in about 1 hour with dual USB-C PD input. The 521 PowerHouse is slower since its USB-C only delivers 60W for input. For the fastest turnaround, the C300 is the clear winner.
Which model has the longest lifespan?
Both the SOLIX C300 and the 521 PowerHouse use LiFePO4 batteries rated for 3,000 cycles, which Anker says can last up to 10 years. The C300 DC also uses LiFePO4 but only comes with a 3-year warranty compared to 5 years on the other two. All three will last a long time, but the C300 and 521 have better warranty coverage.
My Final Verdict
The Anker SOLIX C300 is my overall winner because it gives you the best balance of AC outlets, fast 140W charging, and a 288Wh battery in a compact 4.1 kg package that runs at just 25dB. The C300 DC is the runner-up for backpackers who prioritize weight savings over AC power, while the 521 PowerHouse is the budget option for basic needs with its 256Wh capacity and 60W USB-C.
If you’re still on the fence, ask yourself one question: do you need to plug anything into a standard wall outlet? If yes, get the SOLIX C300. If you only charge USB devices and want the lightest carry, grab the C300 DC.
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 most campers and travelers who need AC outlets, fast recharging to 80% in 50 minutes, and ultra-quiet 25dB operation.
Runner-Up: Anker SOLIX C300 DC
- To activate C300 DC Portable Power Station for the first time: Recharge...
- Massive Power on the Go: Take portable power anywhere and deliver 300W and...
Perfect for ultralight backpackers who only charge USB devices and want the lightest option at just 2.8 kg with dual 140W USB-C ports.
Best Budget: Anker 521 PowerHouse
- Robust High-Wattage Support: SurgePower technology ensures a robust output...
- Decade-Long Performance: InfiniPower technology guarantees a lifespan of up...
Great for budget-conscious buyers who still want 2 AC outlets and a 256Wh LiFePO4 battery with a 5-year warranty.
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