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 provides 300W AC output with 2 AC outlets, essential for standard appliances, which the Ecoflow lacks. Choose EF ECOFLOW TRAIL 300 for a purely DC/USB-C setup needing 5 DC ports and 288Wh capacity.

$150Buy on Amazon

Bottom Line: Anker 521 is the better choice. It provides 300W AC output with 2 AC outlets, essential for standard appliances, which the Ecoflow lacks.

Key Differences

The most significant spec differences at a glance

256

Battery Capacity

11% less

288

300

AC Output

100% more

AC Outlets

100% more

Dc Ports

80% less

USB-C Ports

50% less

Advantages

Where each product wins

‎Anker

AC Output: 100% higher (300.0 vs 0)
AC Outlets: 100% higher (2 vs 0)

EF ECOFLOW

Battery Capacity: 11% higher (256.0 vs 288)
Dc Ports: 80% higher (1 vs 5)
USB-C Ports: 50% higher (1 vs 2)

Who Should Buy Which?

Find the right product for your needs

Buy ‎Anker if...

Anker 521 Portable Power

This power station is ideal for users who need a versatile power source for activities like car camping, RV travel, or as a small-scale home emergency backup. If you require the ability to power standard household appliances, charge laptops via AC, or run small medical devices, the Anker 521's dual 300W AC outlets are essential. You prioritize the flexibility of diverse output options (AC, USB-C PD, USB-A, DC) and appreciate the long-lasting LiFePO4 battery, even if it means a slightly less compact 8.16 lbs unit.

Buy EF ECOFLOW if...

EF ECOFLOW TRAIL 300

The EcoFlow TRAIL 300 is perfect for the minimalist adventurer, backpacker, or a tech-savvy traveler who primarily relies on DC and USB-powered devices. If your gear consists mainly of smartphones, tablets, cameras, drones, or 12V portable fridges, and you absolutely do not need AC outlets, this compact unit is for you. You value extreme portability, multiple DC ports, and the blazing-fast charging capabilities of dual 140W USB-C ports for modern electronics, prioritizing a lightweight design for on-the-go power.

Spec Comparison

12 specs compared

Specification	Anker 521 Portable Power	EF ECOFLOW TRAIL 300 DC
Price	$150	$147
Rating	4.4(3.0k)	4.4(158)
Capacity Wh	256W	288W
Chemistry	LiFePO4	LiFePO4
AC Output Watts	300W	0W
Dc Ports	1	5
AC Outlets	2	0
Weight	8.16 lbs	—
USB A Ports	2	2
USB C Ports	1	2
Peak Output Watts	600W	—
Model Number	—	TRAIL DC
Charge Time Hours	—	1.77 hrs
Solar Input Watts	—	110W

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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

EF ECOFLOW TRAIL 300

Pros

288Wh LiFePO4 battery for durable power output
300W DC output powers multiple outdoor devices
Five DC ports charge up to five devices concurrently
Dual 140W USB-C ports enable rapid device charging

Cons

No AC outlets; incompatible with standard appliances
Charging cable not included; requires separate purchase

Frequently Asked Questions

Common questions about this comparison

Which power station is better for powering standard home or outdoor appliances?

The Anker 521 is superior for standard appliances, featuring two AC outlets with a 300W output. The EF ECOFLOW TRAIL 300 lacks AC outlets entirely, limiting it to DC and USB-C powered devices.

What is the main difference in their AC output capabilities?

The Anker 521 provides 300W AC output through two standard outlets, allowing it to power various household electronics. In contrast, the EF ECOFLOW TRAIL 300 has no AC output, focusing solely on DC (300W) and USB-C (dual 140W) charging.

How do the capacities of these two power stations compare?

The EF ECOFLOW TRAIL 300 offers a slightly higher capacity at 288Wh. The Anker 521 has a capacity of 256Wh. Both units utilize LiFePO4 batteries, ensuring a long and reliable lifespan.

Which unit offers more versatility in terms of charging ports?

The Anker 521 provides greater versatility with 2 AC outlets, one 60W USB-C PD port, two USB-A ports, and one DC port. The EF ECOFLOW TRAIL 300 excels in DC charging with five DC ports and dual 140W USB-C ports, but lacks AC.