Our Verdict
Anker SOLIX C300 Wins

Despite its higher $249.99 price, the Anker unit offers a superior LiFePO4 battery chemistry with an impressive 3000 cycle life, three times that of the EnginStar's 1000 cycles. It also boasts exceptionally fast 0.8333-hour charging to 80% and more versatile output with 3 AC outlets and a 140W USB-C port, delivering a much better long-term investment. The EnginStar Solar Generator is the better pick for budget-conscious users who prioritize a lower upfront cost at $129.99 and don't require rapid charging or extended battery longevity.
Bottom Line: Anker SOLIX C300 is the better choice. Despite its higher $249.
In-Depth Analysis
How they compare in practice
The Anker SOLIX C300 and EnginStar Solar Generator R300 present two distinct propositions in the portable power station market, largely driven by their underlying battery technology and charging capabilities. The most significant differentiator lies in their battery chemistry and cycle life. The Anker C300 utilizes a LiFePO4 battery, boasting an impressive 3000 charge cycles to 80% capacity. In contrast, the EnginStar R300 features a standard Lithium battery, rated for only 1000 cycles. This means the Anker unit is designed for significantly longer-term, more frequent use, making it a far more durable and reliable investment for users who anticipate regular power demands over several years.Another critical performance delta is charging speed. The Anker SOLIX C300 truly excels here, capable of recharging to 80% capacity in a mere 50 minutes (0.8333 hours) via its 140W two-way fast charging USB-C port. This is a game-changer for outdoor enthusiasts or in emergency situations where time is of the essence. The EnginStar R300, on the other hand, takes a lengthy 7 hours to fully recharge via AC, which can be a substantial inconvenience when you need quick power replenishment. While both offer similar 300W AC output and around 290Wh capacity, the Anker's rapid recharge and its powerful 140W USB-C output for charging high-demand devices like laptops provide a noticeable edge in real-world utility.Regarding output versatility, the Anker C300 offers 3 AC outlets and a more modern port selection with 3 USB-C (one at 140W) and 1 USB-A, alongside a DC car port. The EnginStar R300 comes with 2 AC outlets, 1 USB-C, 2 USB-A, and 3 DC ports. While the EnginStar offers more traditional DC ports, the Anker's higher AC outlet count and superior USB-C capabilities cater better to contemporary electronics and diverse power needs. For its $249.99 price, the Anker delivers premium features like robust battery longevity and cutting-edge charging. The EnginStar, priced at a highly competitive $129.99, offers a basic but functional portable power solution, making the trade-offs in battery life and charging speed acceptable for casual or infrequent use where budget is paramount.
Key Differences
The most significant spec differences at a glance
Battery Capacity
3% lessAC Outlets
50% moreCharge Time
88% lessCycle Life
200% moreDc Ports
67% lessAdvantages
Where each product wins
Anker
- AC Outlets: 50% higher (3 vs 2)
- Charge Time: 88% lower (0.8333 vs 7)
- Cycle Life: 200% higher (3000 vs 1000)
- USB-C Ports: 200% higher (3 vs 1)
EnginStar
- Battery Capacity: 3% higher (288 vs 296)
- Dc Ports: 67% higher (1 vs 3)
- USB-A Ports: 50% higher (1 vs 2)
Which to Pick for Your Situation
Concrete scenarios with a clear recommendation
For frequent campers or RV users needing reliable, long-term power
AnkerAnker's LiFePO4 battery offers 3000 charge cycles, ensuring exceptional longevity for consistent outdoor use, far exceeding the EnginStar's 1000 cycles.
For emergency home backup during short power outages
AnkerThe Anker C300's rapid 0.8333-hour recharge time means it can be quickly topped off and ready, while its 3 AC outlets offer more flexibility for essential devices.
For occasional outdoor picnics or light recreational use on a strict budget
EnginStarThe EnginStar is significantly more affordable at $129.99, providing sufficient 296Wh capacity and 300W AC output for basic needs without the premium features.
For charging modern laptops and multiple USB-C devices on the go
AnkerAnker features a powerful 140W two-way USB-C port and three USB-C ports in total, optimizing charging for high-demand modern electronics compared to EnginStar's single USB-C.
Who Should Buy Which?
Find the right product for your needs
Buy Anker if...
Anker Portable Power Station
The Anker SOLIX C300 is the ideal choice for outdoor adventurers, frequent campers, remote workers, or anyone who demands reliability, speed, and long-term durability from their portable power station. This buyer prioritizes an investment in quality and future-proofing, understanding that the slightly higher $249.99 price tag translates to superior performance and longevity. They need a unit that can quickly recharge, perhaps during a short break between activities or an unexpected power outage, making the exceptional 0.8333-hour (50 minutes to 80%) charging time via its 140W two-way USB-C port critically important. The impressive 3000 charge cycle life of its LiFePO4 battery is a major draw, ensuring the unit remains a dependable power source for many years of regular use, far surpassing the typical 1000 cycles of standard lithium batteries found in competitors. Furthermore, users with multiple or modern devices will appreciate the three AC outlets and three USB-C ports, including a powerful 140W output, for efficiently charging laptops, drones, or other demanding electronics. This buyer isn't swayed by the EnginStar's lower upfront cost or marginally higher raw capacity, as they value the Anker's advanced features, robust battery chemistry, and prolonged lifespan above all else for consistent, demanding use, providing peace of mind and sustained utility.
Buy EnginStar if...
EnginStar Solar Generator, 300W
The EnginStar Solar Generator is perfectly suited for the budget-conscious consumer or the occasional user who needs basic portable power without a significant investment. This buyer is likely planning infrequent day trips, casual outdoor activities, or requires an affordable emergency backup solution for short power outages. Their primary priority is affordability, and at $129.99, the EnginStar offers an accessible entry point into portable power. While they might not get the advanced features of more expensive units, the EnginStar's 296Wh capacity and 300W AC output are perfectly adequate for powering essential small appliances, charging phones, or running a fan. They understand and accept the trade-offs, such as the 7-hour AC recharge time and the 1000-cycle battery life, as their usage patterns don't demand rapid turnarounds or extreme longevity. This user might appreciate the three DC ports for legacy devices, even if the USB-C provision is less extensive than the Anker. They are not focused on maximizing performance for heavy daily use or seeking the fastest charging speeds; instead, they seek a functional, cost-effective device that reliably delivers basic power when and where they need it, making it an excellent value for light to moderate demands.
Spec Comparison
13 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $250 | $130 |
| Rating | 4.6(1.7k) | 4.3(1.4k) |
| Capacity Wh | 288W | 296W |
| Chemistry | LiFePO4 | Lithium |
| AC Output Watts | 300W | 300W |
| Dc Ports | 1 | 3 |
| AC Outlets | 3 | 2 |
| Cycle Life | 3000 | 1000 |
| Weight | 9.02 lbs | — |
| USB A Ports | 1 | 2 |
| USB C Ports | 3 | 1 |
| Charge Time Hours | 0.83 hrs | 7 hrs |
| Peak Output Watts | 600W | — |
| Solar Input Watts | 100W | — |
| Model Number | — | R300 |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
Anker Portable Power
- 288Wh capacity, 300W AC output (600W surge).
- 140W two-way USB-C port enables rapid charging.
- 8 output ports: 3 AC, 3 USB-C, 1 USB-A, 1 car.
- LiFePO4 battery rated for 3,000 charge cycles.
- Solar panel for recharging is not included.
- Not compatible with all Anker solar panel models.
- Only one of three USB-C ports offers 140W output.
EnginStar Solar Generator,
- Delivers 300W AC power with 296Wh battery capacity.
- Two 110V pure sine wave AC outlets.
- Recharges via AC, car, or 12-25V solar input.
- Rated for 1000 charge cycles.
- Limited to devices under 300W total output.
- 7-hour recharge time using AC wall adapter.
- Solar panel requires separate purchase.
Frequently Asked Questions
Common questions about this comparison
How long does it take to charge the Anker SOLIX C300?
The Anker SOLIX C300 can recharge to 80% capacity in just 50 minutes (0.8333 hours) using its 140W two-way USB-C input. This rapid charging capability is a key advantage.
What is the main difference in battery life between the two power stations?
The Anker SOLIX C300 uses a LiFePO4 battery rated for 3000 charge cycles, while the EnginStar uses a Lithium battery with a 1000-cycle life. Anker offers three times the longevity.
Can either unit power a small refrigerator?
Both units have a 300W AC output. They can power small, energy-efficient mini-fridges, but larger standard refrigerators typically draw too much power. Always check your appliance's wattage.
Is the EnginStar Solar Generator a good value for its price?
At $129.99, the EnginStar offers excellent value for a 296Wh, 300W portable power station. It's a budget-friendly option for casual users who don't need rapid charging or extended battery longevity.
How many AC outlets does each portable power station have?
The Anker SOLIX C300 features three AC outlets, providing more options for plugging in multiple standard appliances simultaneously. The EnginStar Solar Generator has two AC outlets.
Are solar panels included with these power stations?
Neither the Anker SOLIX C300 nor the EnginStar Solar Generator includes a solar panel. They are sold separately, allowing users to choose a compatible panel based on their needs.
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