Name: Anker 521 Portable Power Station Upgraded with LiFePO4 Battery, 256Wh 6-Port PowerHouse, 300W (Peak 600W) Solar Generator (Solar Panel Optional), 2...
Brand: ‎Anker
SKU: B09FF46FQ9
Price: 149.99 USD
Availability: InStock
Rating: 4.4 (2971 reviews)

Our Verdict

Anker 521 Wins

‎Anker Anker 521 Portable Power Station Upgraded with LiFePO4 Battery, 256Wh 6-Port PowerHouse, 300W (Peak 600W) Solar Generator (Solar Panel Optional), 2 AC Outlets, 60W USB-C PD Output, Outdoor Generator - Portable Power Stations

It offers a slightly higher 256Wh capacity, maintaining identical LiFePO4 chemistry and 300W AC output. Choose GRECELL for its faster 1.5-hour rapid recharge.

$150Buy on Amazon

Bottom Line: Anker 521 is the better choice. It offers a slightly higher 256Wh capacity, maintaining identical LiFePO4 chemistry and 300W AC output.

Key Differences

The most significant spec differences at a glance

256

Battery Capacity

11% more

230

Dc Ports

50% less

Advantages

Where each product wins

‎Anker

Battery Capacity: 11% higher (256.0 vs 230)

GRECELL

Dc Ports: 50% higher (1 vs 2)

Who Should Buy Which?

Find the right product for your needs

Buy ‎Anker if...

Anker 521 Portable Power

The ideal buyer for the Anker 521 is someone prioritizing slightly extended power and rapid laptop charging for their outdoor adventures or remote work. If you need a reliable 256Wh LiFePO4 power source with a robust 60W USB-C PD output to keep your modern devices powered longer, even if it means a slightly higher price point, the Anker 521 is your match. It's perfect for users who value brand trust and a clear laptop charging solution.

Buy GRECELL if...

GRECELL Portable Power Station

The GRECELL 300W is perfect for the budget-conscious user who needs quick turnaround times for recharging and flexible DC power. If you prioritize getting back to full power in just 1.5 hours and need multiple DC outputs for various camping or car accessories, this 230Wh LiFePO4 unit offers excellent value. It's ideal for casual campers, RV users, or anyone needing an affordable emergency backup with fast readiness.

Spec Comparison

11 specs compared

Specification	Anker 521 Portable Power	GRECELL Portable Power Station
Price	$150	$120
Rating	4.4(3.0k)	4.6(431)
Capacity Wh	256W	230W
Chemistry	LiFePO4	LiFePO4
AC Output Watts	300W	300W
Dc Ports	1	2
AC Outlets	2	2
Weight	8.16 lbs	—
USB A Ports	2	2
USB C Ports	1	1
Peak Output Watts	600W	600W
Charge Time Hours	—	2.5 hrs
Solar Input Watts	—	60W

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Pros & Cons

Quick overview of strengths and weaknesses

‎Anker Anker 521

Pros

LiFePO4 battery provides 10-year lifespan
Peak 600W output handles high-draw appliances
60W USB-C PD port recharges laptops quickly
Six outputs: 2 AC, 1 USB-C PD, 2 USB-A, 1 DC

Cons

8.16 lbs unit weight impacts portability
256Wh capacity limits high-draw use cases
Solar charging requires separate panel purchase

GRECELL Portable Power

Pros

1.5-hour rapid recharge with dual input.
LiFePO4 battery offers extended cycle life.
300W AC output supports small electronics.
Multiple ports power 7 devices simultaneously.

Cons

230Wh capacity limits extended runtime.
Fast charge requires separately purchased USB-C input.
300W continuous output too low for power tools.

Frequently Asked Questions

Common questions about this comparison

Which power station is better for longer outdoor trips?

The Anker 521 is slightly better with its 256Wh capacity, offering a bit more power reserve for extended use. The GRECELL 300W's 230Wh is also good for general camping needs, but Anker provides a minor edge for duration.

What is the main difference in battery capacity between them?

The Anker 521 has a capacity of 256Wh, while the GRECELL 300W offers 230Wh. This means the Anker unit can power devices for a slightly longer duration on a single charge.

Which unit offers faster recharging?

The GRECELL 300W boasts a faster 1.5-hour rapid recharge time, which is beneficial for quickly topping up the battery. The Anker 521's recharge time is not specified but typically takes longer.

Do both units use the same battery technology?

Yes, both the Anker 521 and GRECELL 300W utilize LiFePO4 (Lithium Iron Phosphate) batteries. This chemistry is known for its extended lifespan, offering thousands of charge cycles and improved safety compared to traditional lithium-ion.